UK VAT registration guide (2026/27)

1. Overview

Value Added Tax is the third-largest source of UK tax revenue after Income Tax and National Insurance, raising roughly £170 billion a year. It is a consumption tax collected by businesses at every stage of the supply chain, with each business reclaiming what its suppliers charged it and remitting the net to HMRC. Registration is the gateway into that system, and the mechanics of when registration starts being compulsory are the single most important operational question for small UK businesses approaching the threshold.

The £90,000 VAT registration threshold applies from 1 April 2024, raised from £85,000 in the Spring Budget 2024. It is the highest in the OECD and reflects a deliberate policy of keeping the smallest UK traders outside the VAT system entirely. Around 2.4 million UK businesses are VAT registered (about half the total business population) and roughly 300,000 cross the threshold in any given year. Many more are registered voluntarily at lower turnover because their customers are themselves VAT-registered businesses who can reclaim what they are charged.

Registration brings five separate obligations: charging the correct VAT rate on every sale, issuing compliant VAT invoices, keeping digital records under Making Tax Digital rules, filing a VAT return for each VAT period (usually quarterly), and paying the net VAT to HMRC within one month and seven days of the period end. The compliance burden is real but proportionate, and the choice between five different accounting schemes lets businesses match the mechanics to their cash flow and bookkeeping capacity. For most small businesses the practical decision is whether to register voluntarily early, monitor the threshold and register reactively, or restructure to stay below.

2. The £90,000 mandatory registration threshold

Registration becomes compulsory if either of two tests is met. Both are stated in section 3 of VAT Notice 700/1.

Historic test (rolling 12 months). At the end of any month, look back over the previous 12 calendar months. If your total VAT-taxable turnover in that 12-month window exceeded £90,000, you must notify HMRC within 30 days of the end of that month, and you are registered with effect from the first day of the second month after the threshold was crossed. The test must be applied every month - it is not annual.

Future test (next 30 days alone). If on any day you reasonably expect your VAT-taxable turnover in the next 30 days alone to exceed £90,000, you must notify HMRC within 30 days, and registration is effective from the day the expectation arose. This test exists to catch step-change events - winning a big contract, opening a new outlet, going live with a popular product launch - where the rolling historic test would lag the actual liability.

Worked example: rolling 12 months. A freelance graphic designer takes on small clients through 2025/26 and the rolling 12-month turnover at each month-end runs: £62k, £68k, £74k, £79k, £83k, £87k, £91k. The breach happens at the seventh month-end (rolling 12 months stands at £91k). The designer has 30 days to notify HMRC and is registered from the first day of the second month after that month-end. So if the breach is at end of November 2025, registration starts 1 January 2026 - one month of breathing space, then VAT applies to every sale from that date.

Worked example: future 30 days. A small software consultancy at £55k rolling turnover signs a one-off £100k engagement that will all bill in November. On the day the contract is signed (say 20 October), the consultancy reasonably expects to exceed £90,000 in the next 30 days alone. Registration is effective 20 October - the same day - and every invoice issued under the new contract must carry VAT.

The exception: temporary breach with permission. If you believe a one-off spike pushed you over £90,000 but your underlying trade will remain below the deregistration threshold (currently £88,000) in the next 12 months, you can apply to HMRC for an exception from registration. You must provide evidence (eg a single large contract that is not expected to recur, sale of business assets, a non-trading event). HMRC writes to confirm the exception. If granted, you do not register; if refused, you have 30 days from the refusal date to complete registration without late-filing penalties. The exception is most useful for businesses planning a sale of capital equipment that briefly inflates taxable turnover.

What counts toward the threshold. Standard rated sales (most goods and services at 20%), reduced rated sales (5% items such as domestic energy and childrens car seats), and zero rated sales (most foods, books, exports of goods, childrens clothes) all count - they are taxable, just at different rates. VAT-exempt sales (financial services, insurance, healthcare, education, postal services) do not count. Out-of-scope sales (most B2B services to overseas business customers) do not count. Sales of capital assets where you did not reclaim VAT on purchase do not count. Reverse-charge supplies received do count.

The £90,000 threshold rose from £85,000 on 1 April 2024 - the first increase since 2017. The Office of Tax Simplification has previously recommended phasing the cliff with a graduated registration but no government has yet adopted the proposal. For the next several years the threshold is expected to remain flat in nominal terms, meaning the real-terms threshold is falling each year with inflation and more businesses become liable to register over time.

3. Voluntary registration: when is it worth it

Any UK business making taxable supplies can register voluntarily at any turnover, including zero turnover if the business has a credible intention to trade. Voluntary registration is genuinely common: roughly 30% of all VAT-registered businesses are below the mandatory threshold. The decision turns on the mix of customer base, supplier VAT, and the cash flow timing.

The B2B case for voluntary registration. If most of your customers are themselves VAT-registered businesses, your VAT cost is largely cosmetic. You charge 20% on top of your net price, the customer reclaims it, and no economic burden falls on either party. Meanwhile, you can reclaim input VAT on every business purchase - the laptop, the office rent (if landlord opted to tax), the accountancy fees, the software subscriptions. A B2B consultancy at £40k turnover with £8k of VAT-able expenses saves £1,600 a year through voluntary registration. The customer is unaffected. The administrative cost (one MTD software subscription, four returns a year) is typically £200 to £600 a year, well below the input VAT recovery.

The B2C case against voluntary registration. If your customers are individual consumers, they cannot reclaim the VAT you charge. Adding 20% to your prices either shrinks your margin (if you absorb it) or makes you 20% more expensive than unregistered competitors (if you pass it on). For consumer-facing services like a personal trainer, a domestic cleaner, a small online shop selling under £90k a year, voluntary registration usually destroys margin without compensating reclaim because input VAT is typically small. Stay unregistered until the threshold forces it.

The pre-trading case. Startups with significant pre-launch capital expenditure (a coffee shop fitting out premises, a manufacturing business buying machinery, a SaaS business commissioning development work) should register voluntarily before incurring the spend. You can reclaim input VAT on goods purchased up to four years before registration provided they are still on hand, and on services purchased up to six months before registration. The four-year and six-month limits are statutory - they cannot be extended.

The credibility case. Some B2B customers treat VAT registration as a signal that a supplier is established and serious. A small consultancy bidding for a contract from a large corporate may find that procurement filters out non-VAT-registered suppliers by default. The effect is hard to quantify and varies sharply by industry, but for businesses targeting enterprise customers it is a real consideration alongside the pure cost analysis.

The future-test trap. A business that stays voluntarily unregistered while growing toward the threshold faces a sudden compliance cliff. The day you sign a single contract that will push you over £90,000 in the next 30 days, registration is immediate and every invoice under that contract carries VAT. Voluntary registration months earlier would have avoided the scramble. For businesses on growth paths approaching £75k to £85k, the argument for registering voluntarily strengthens significantly because the upside of avoiding the cliff outweighs the small ongoing compliance cost.

The deregistration option. Voluntary registration is reversible. If you register at £40k expecting growth that does not materialise, you can deregister once your forward 12-month turnover forecast is under £88,000. So the commitment is not permanent. Many businesses register voluntarily, run for two years, find their B2C mix grew faster than expected, and deregister back out.

4. Deregistration at £88,000

Deregistration is the mirror image of registration and is governed by section 4 of VAT Notice 700/11. There are two separate triggers: mandatory deregistration and voluntary deregistration.

Mandatory deregistration. You must deregister if you stop making taxable supplies altogether. Common triggers are: ceasing to trade, sale of the business as a going concern where the buyer takes over the VAT registration, change in business activity such that all supplies become exempt, or insolvency. The application is on form VAT7 within 30 days of the cessation event. HMRC sets a deregistration date and you file a final VAT return.

Voluntary deregistration at £88,000. You can apply to deregister if your VAT-taxable turnover in the next 12 months is expected to be no more than £88,000 (the deregistration threshold, set £2,000 below the registration threshold to prevent businesses bouncing in and out around the £90,000 line). The expectation must be based on reasonable forecasts - HMRC will challenge a deregistration where the prior 12 months were £95,000 and there is no visible reason for the projected drop. Acceptable reasons include loss of a major customer, planned scaling-back, retirement of a key person, or a permanent shift to exempt activity.

The final return: stock and assets at deregistration. The most-overlooked deregistration mechanic is the requirement to account for output VAT on the open-market value of any business assets and stock you keep at deregistration where the total VAT due exceeds £1,000. This includes vehicles, computer equipment, machinery, fixtures and stock for resale on which you previously reclaimed input VAT. It does not apply to assets bought VAT-free or to assets where the VAT would be less than £1,000 in total. The rule prevents businesses from reclaiming VAT on assets, deregistering, and then using those assets personally without ever paying VAT on the consumption.

Effective date and the final return window. HMRC sets the deregistration date based on the circumstances. For voluntary deregistration this is normally the date HMRC processes the VAT7. The final return covers the period from the start of your last VAT quarter to the deregistration date. Late returns after deregistration still incur penalties, so do not assume the cessation event ends your VAT compliance obligations - the final return is a hard deadline.

5. The registration process step by step

Almost all UK VAT registrations are now completed online through HMRC services at gov.uk/register-for-vat. Paper form VAT1 still exists for specific cases (non-resident businesses, certain agricultural flat rate scheme applications, VAT groups) but the online flow handles the majority.

Step 1: gather your information. You will need your business legal structure (sole trader, partnership, limited company), Companies House number if applicable, business address and trading address if different, business activity (SIC code), expected turnover figures for the next 12 months, bank account for VAT refunds, and whether you want to apply for any VAT accounting scheme at the same time. For mandatory registration, you also need the exact date the threshold was breached.

Step 2: create or sign in to a Government Gateway account. The application is filed through the business taxes section of HMRC online services. If you do not yet have a Government Gateway ID, you create one as part of the application. The ID is the long-term anchor for all subsequent VAT filings, so secure it properly with two-factor authentication.

Step 3: complete the online VAT1. The online flow asks roughly 60 questions across business details, activity, turnover history, expected turnover, EDR (effective date of registration), scheme elections, and bank details. Most fields are straightforward. The most important is the EDR field: for mandatory registration this is fixed by the threshold-breach mechanics; for voluntary registration you can backdate up to four years.

Step 4: submit and wait. After submission you get an application reference number. HMRC processes online applications in 10 to 30 working days for straightforward cases. Complex cases - non-UK businesses, group registration, multi-business sole traders - can take 60 to 90 days. You receive your VAT Registration Number (VRN) by post and a digital copy in your Government Gateway account. The certificate (VAT4) shows your EDR, VAT periods (usually quarterly with a stagger group determined by HMRC), and the first return due date.

Step 5: set up MTD-compatible software. Before your first VAT return is due, you must have MTD-compatible software in place to file digitally. Options include full accounting packages (Xero, QuickBooks Online, Sage Business Cloud, FreeAgent), bridging software for existing spreadsheets, and free options for smallest businesses. Connect the software to HMRC through the MTD sign-up process.

Step 6: file your first return. The first VAT period starts at your EDR and ends at the end of your first VAT quarter. The first return is due one calendar month and seven days after the period end. Payment is due at the same time, typically by direct debit set up during the registration process. Missing the first return triggers the new VAT penalty regime (points-based) introduced in January 2023.

6. VAT accounting schemes

HMRC offers five different VAT accounting schemes. The standard scheme is the default; the other four are optional and have eligibility limits and different mechanics. Choosing the right scheme for your business affects cash flow, compliance burden and (in some cases) absolute VAT cost.

1. Standard accounting (the default). Account for VAT on the invoice date rather than the payment date. Charge 20% on every taxable sale, reclaim input VAT on every business purchase, file quarterly returns showing output VAT minus input VAT, pay or claim the net to HMRC one month and seven days after each period end. Used by the majority of mid-sized and larger businesses, by anyone with significant input VAT (so reclaim is material), and by anyone whose customers are mostly VAT-registered.

2. Flat Rate Scheme. Available to businesses with VAT-taxable turnover under £150,000 net. Charge 20% to customers as normal but pay HMRC a single flat rate of gross turnover (sector-specific, 4% to 14.5%) with a 16.5% override for limited cost traders. Almost no input VAT reclaim except capital purchases over £2,000. Simpler bookkeeping; sometimes saves money for goods-heavy trades; usually neutral or negative for solo consultants since 2017. See the dedicated VAT Flat Rate Scheme guide for the full mechanics, sector rates table, limited cost trader test, 1% first-year discount and four worked examples.

3. Cash Accounting Scheme. Available to businesses with VAT-exclusive turnover under £1.35 million a year (mandatory exit at £1.6 million). Account for VAT on the date you receive payment from a customer, not the date you issue the invoice. Reclaim input VAT only when you actually pay your supplier. Major cash-flow advantage for businesses with slow-paying customers because you do not pay HMRC VAT on a sale until the customer has paid you. If a customer goes insolvent before paying, you never pay output VAT on that invoice (bad debt relief is automatic). Disadvantage: cannot reclaim input VAT on stock or equipment until you pay for it, which can hurt cash flow if you buy on supplier credit.

4. Annual Accounting Scheme. Same eligibility as Cash Accounting (£1.35m / £1.6m). File one VAT return per year instead of four quarterly returns. Pay nine monthly instalments at 10% of the previous years VAT bill (or the agreed estimate for new schemes), then a balancing payment with the annual return. Useful for cash flow predictability and lower admin burden. Can be combined with Cash Accounting or Flat Rate Scheme. Disadvantage: late registration of instalment changes against rapidly growing businesses can lead to a large balancing payment.

5. Margin schemes. A family of special schemes for industries where calculating VAT on the full sale price would produce double-taxation. The four main variants are: (a) Margin Scheme for second-hand goods, where VAT is charged on the dealer margin between buy and sell price, used by car dealers, antique sellers, used furniture and clothing dealers; (b) Auctioneers Scheme, a simplified variant of the second-hand scheme; (c) Tour Operators Margin Scheme (TOMS), where tour operators charge VAT on the margin between buying-in costs and sale price; (d) Mobile Phones and Computer Chips Reverse Charge, specific anti-fraud scheme. The margin schemes are mandatory in some cases and optional in others - the mechanics are technical and usually need accountant input.

How to choose. The standard scheme suits most businesses with material input VAT, mixed customer base or turnover above £150,000. Flat Rate Scheme suits small goods-heavy trades (retailers, hairdressers, photographers, restaurants). Cash Accounting suits any business of any size up to £1.35m with slow-paying customers. Annual Accounting suits stable, predictable businesses wanting fewer filing events. Margin schemes are a technical fit-or-no-fit decision driven by industry. You can switch schemes once a year in most cases by writing to HMRC.

7. Group registration

A VAT group is two or more bodies corporate (and in some cases partnerships and trusts holding corporate assets) under common control that register together as a single taxable person. The legal authority is sections 43 to 43D of the Value Added Tax Act 1994, and the practical mechanics are in VAT Notice 700/2.

The common-control test. Two or more bodies corporate qualify if one controls the others, or if a single third party (which can be an individual, a partnership, a trust or another company) controls them all. Control means owning more than 50% of voting rights or having a sufficient direct or indirect influence on decision-making. The test is more flexible than UK Companies Act group accounts - you can have a VAT group across structures that would not consolidate for statutory accounts purposes.

How the group works. One member is designated the representative member. The group files a single VAT return through the representative member, covering all group members combined. Inter-group supplies between members are disregarded for VAT - you do not charge VAT on services or goods moved between group members. This is the single biggest practical benefit because it eliminates the VAT compliance burden on internal flows like management charges, recharges of central costs, or rental of shared office space.

Joint and several liability. Every member of a VAT group is jointly and severally liable for the whole group VAT debt. If one subsidiary becomes insolvent owing VAT, HMRC can collect from any other member. For this reason VAT groups are usually formed only inside true corporate groups under common ownership, not across independent businesses with similar shareholders.

When grouping helps. Groups with substantial intra-group supplies benefit most - a holding company that recharges staff and IT costs to multiple operating subsidiaries can eliminate the VAT compliance on those internal recharges. Property holding structures (where one company owns the building and rents to operating subsidiaries) frequently use VAT grouping. Groups with partially-exempt subsidiaries can sometimes benefit by blending the recoverable-input-VAT calculation across the whole group, though the rules here have tightened over the years.

When grouping does not help. Single-entity businesses have nothing to group. Groups where the only intra-group flows are dividends and interest (neither of which carries VAT) gain no compliance benefit. Groups with one fully-taxable subsidiary and one fully-exempt subsidiary often have to do additional partial-exemption calculations at group level that they would not have to do separately. The decision should be modelled.

How to apply. Submit form VAT50 (group details) and form VAT51 (member details for each member) to HMRC. The group registration usually takes 6 to 12 weeks to approve. You can add or remove members later with further VAT50/51 filings. Disbanding the group requires a separate written request.

8. Partial exemption

A partially exempt business makes both taxable and exempt supplies. The fundamental rule of VAT is that input VAT is reclaimable only to the extent it is attributable to taxable supplies. So a partially-exempt business must apportion its input VAT and reclaim only the taxable-attributable portion. The mechanics are in section 4 of VAT Notice 706.

Three categories of input VAT. Each input VAT receipt falls into one of three buckets: (1) directly attributable to taxable supplies (fully reclaimable); (2) directly attributable to exempt supplies (not reclaimable at all); (3) residual or overhead input VAT that relates to the business as a whole (partly reclaimable using a recovery ratio). The standard recovery ratio is taxable turnover divided by total turnover for the VAT period, rounded up to the next whole percentage.

The de minimis rule. A safety valve for small partial exemption. If both of these conditions are met for the period, all input VAT (including the exempt-related portion) can be reclaimed in full:

• Total exempt-related input VAT is no more than £625 per month on average (so £1,875 for a quarter, £7,500 for a year).
• Exempt-related input VAT is no more than 50% of total input VAT.

The de minimis test is applied per VAT period and then reviewed at the year-end annual adjustment. The rule keeps the smallest partially-exempt businesses outside the full partial-exemption machinery. Think a dentist with a small retail counter selling toothbrushes - the retail VAT-bearing element is tiny relative to the exempt dental fees, and the de minimis rule lets the dentist reclaim all input VAT without working through apportionment.

Annual adjustment. At the end of each VAT year (the "tax year" for partial exemption purposes, which may differ from your accounting year), recalculate the recovery ratio across the whole year and compare to the sum of the quarterly recoveries. Any difference is settled with HMRC on the next return. This evens out seasonal or lumpy variations in the taxable / exempt mix.

Special methods. If the standard taxable-over-total method does not give a fair result for your specific business, you can apply to HMRC for a special method - for example a floor-area-based apportionment for a building with both taxable and exempt uses, or a headcount-based method for a mixed-supplier finance house. Special methods need HMRC pre-approval and are documented in a Special Method Agreement.

Common partial-exemption sectors. Banks, insurance brokers, financial advisers, healthcare providers, universities, charities, residential landlords, educational institutions, places of worship and dentists all routinely face partial exemption questions because their core supplies are exempt but they generate some taxable income on the side. Get the partial-exemption method right at the start - retrospective restructuring of the recovery ratio is one of HMRC's most common VAT audit areas.

9. Place of supply rules

Where a supply takes place determines which countrys VAT (if any) applies. Post-Brexit the UK has its own place-of-supply rules, which generally follow OECD norms. The detailed mechanics are in VAT Notice 741A for services and Notice 725 for goods.

Goods: where physically located when the supply takes place. Goods supplied within the UK are UK-VAT supplies (taxable at the appropriate rate). Exports of goods physically leaving the UK to a non-UK destination are zero rated (but still count toward registration threshold). Imports of goods into the UK are subject to import VAT at the border, usually accounted for under postponed VAT accounting on the same VAT return as output VAT - making import VAT cash-flow neutral.

Services to a business customer (B2B): customers country. The general rule is that B2B services are supplied where the customer belongs. So a UK consultancy invoicing a US corporation makes a supply outside the scope of UK VAT - the UK consultancy invoices net of VAT and shows "outside the scope of UK VAT (place of supply)" on the invoice. The US customer may have to self-account for VAT or sales tax under its own rules. This rule applies to most professional, technical, advisory and digital services between businesses.

Services to a consumer (B2C): suppliers country with exceptions. The general rule for B2C services is that they are supplied where the supplier belongs. A UK photographer photographing a German tourist visiting London charges UK VAT. Major exceptions include: electronically supplied services to EU consumers (use the One Stop Shop, see below); telecommunications and broadcasting to overseas consumers (consumer-location rules); services connected with immovable property (location of the property); services of admission to events (location of the event); intermediary services (where the underlying supply takes place).

One Stop Shop (OSS) post-Brexit. Pre-Brexit the UK used the EU-wide Mini One Stop Shop for digital services to EU consumers. Post-Brexit, UK businesses supplying digital services to EU consumers must register for the EU Non-Union OSS through any EU member state of their choice, declaring all EU B2C digital sales on a single quarterly OSS return at the consumer-country VAT rate. The same principle applies in reverse: EU businesses selling digital services to UK consumers must register for UK VAT (no UK equivalent of OSS exists for inbound EU sellers). Goods sold to EU consumers from the UK use the Import One Stop Shop (IOSS) for consignments under €150.

10. Domestic reverse charge for construction

The construction industry domestic reverse charge (DRC) has been in force since 1 March 2021. It shifts responsibility for accounting for VAT on certain B2B construction services from the supplier to the customer. The mechanism is in VAT Notice 735 and the related HMRC technical guidance for the construction sector.

When DRC applies. All four conditions must be met: (1) the supply is for construction services or goods within the scope of the Construction Industry Scheme (CIS); (2) both supplier and customer are CIS-registered contractors; (3) the customer is not an end user or intermediary; (4) the supply is in the UK. Specified services include site preparation, building construction and alteration, civil engineering works, installation of heating, lighting, plumbing, ventilation and similar systems, painting and decorating, and demolition.

How DRC changes invoicing. The subcontractor issues an invoice for the net amount with no VAT charged but with a clear annotation such as "Reverse charge: customer to account for VAT to HMRC". The subcontractor does not collect VAT from the contractor. The contractor accounts for output VAT and (usually) reclaims input VAT for the same amount on its own return - net effect zero. The original VAT charge has effectively been moved up the supply chain to the end user (the main contractor or developer).

Why DRC exists. The DRC was introduced to tackle missing trader fraud in the construction sector, where subcontractors at the bottom of a chain were collecting VAT and disappearing without remitting it to HMRC. By moving the VAT accounting to the main contractor (who is harder to dissolve and easier to audit), HMRC eliminated the fraud vector at the bottom of the chain.

Impact on registration. Reverse-charge supplies still count toward the suppliers £90,000 VAT registration threshold even though no VAT is collected. A subcontractor at £75,000 of CIS contractor work and £20,000 of direct-to-consumer work has £95,000 of VAT-taxable turnover and must register, even though all the CIS work will be invoiced net under the reverse charge. Many subcontractors find their first VAT registration is driven by reverse-charge growth rather than ordinary taxable growth. See the dedicated CIS calculator for the subcontractor deduction rates (20% / 30%) that interact with the VAT reverse charge.

11. Making Tax Digital for VAT

Making Tax Digital (MTD) for VAT is the compulsory digital record-keeping and digital filing regime that has applied to all UK VAT-registered businesses since 1 April 2022. The original April 2019 launch covered only businesses above the threshold; the three-year extension brought in all voluntarily-registered businesses too. Full guidance is published at gov.uk/government/publications/making-tax-digital.

What MTD requires. Three core obligations: (1) keep digital records of every sale and every purchase using MTD-compatible software, with no manual rekeying of figures between systems; (2) maintain a digital audit trail from individual transactions through to the totals reported on the VAT return; (3) submit the VAT return itself through software using HMRC's MTD application programming interface (API), not through the old web portal.

What counts as compatible software. HMRC publishes a list of compatible products. Mainstream cloud accounting packages (Xero, QuickBooks Online, Sage Business Cloud, FreeAgent, Zoho Books, KashFlow) are all compatible. Bridging software lets businesses continue using Excel or Google Sheets provided there is no manual rekeying - cell references and digital links connect each stage. Pen-and-paper records, PDF spreadsheets exported from systems that do not link digitally, and manual portal entries are not compatible.

What MTD does not require. Despite some confusion, MTD does not require you to invoice electronically (paper invoices to customers are still fine), it does not require real-time submission (returns are still quarterly), and it does not change any VAT calculations - only the form of the records and the submission channel. The VAT due on a transaction is identical whether you keep digital or paper records.

Penalties. The penalty regime for MTD non-compliance includes fixed penalties for not using compatible software, daily penalties for sustained non-compliance, and standard VAT late-filing and late-payment penalties on top (now under the points-based regime introduced January 2023). HMRC has so far taken a relatively soft enforcement line, but the underlying legal requirement is firm and audits routinely include MTD compliance checks.

What about MTD for ITSA and Corporation Tax. MTD for Income Tax Self Assessment (MTD ITSA) is the next stage of the digital tax programme, beginning to apply to sole traders and landlords above £50,000 from April 2026 and above £30,000 from April 2027. Corporation Tax MTD has no confirmed start date. The same principles of digital record-keeping and API submission will apply.

12. Worked example: small business crossing £90,000

A worked end-to-end scenario showing how a growing small business interacts with every stage of VAT registration. All figures are illustrative for 2026/27.

The business. Bramble Joinery is a one-person joinery and small-furniture maker run as a sole trader in Manchester. The owner started in 2023 and has grown turnover steadily through 2024 and 2025. Customers are roughly 70% individual homeowners (B2C) and 30% small construction firms (B2B). Suppliers include a timber wholesaler, a hardware shop, a paint and finish supplier and a website hosting provider - the businesss own input VAT runs at about 22% of total VATable purchases.

Year 1 (2024 calendar): £55,000. Brambles rolling 12-month turnover stays well below the threshold all year. No VAT registration. No VAT charged on invoices. No input VAT reclaimed. Net profit calculation is straightforward.

Year 2 (2025 calendar): £75,000. Growth continues. Bramble is now at £75k by year-end with the rolling 12 months running between £62k and £75k. Still below £90,000. The owner considers voluntary registration: the B2B element (£22.5k of taxable turnover) would be VAT-neutral for those customers, but the B2C element (£52.5k) would either lose 20% margin if absorbed or become 20% more expensive if passed on. The owner decides to stay unregistered and monitor monthly. The decision feels obvious now but the cliff is closer than it looks.

Year 3 (2026 calendar): the breach. By May 2026 the rolling 12-month turnover hits £83k. By June end it is £87k. At July month-end it is £91k - the threshold is breached. Bramble has 30 days from 31 July 2026 (so until 30 August 2026) to notify HMRC. Registration is effective 1 September 2026 - the first day of the second month after the breach. The 31-day gap between breach and registration is the breathing space Parliament designed into the rolling test.

August 2026: scramble month. Bramble reissues quotes already given for September delivery to add the 20% VAT. Existing customers with signed contracts get pricing renegotiations - some absorb the VAT, some pay more. The owner buys a Xero subscription (£28 a month) for MTD compatibility, opens the VAT registration online application on 5 August, receives the VRN by post on 19 August (14 working days). EDR confirmed as 1 September.

Scheme choice. The owner considers the five schemes. Flat Rate Scheme: 9.5% (general building with materials) of gross turnover would be roughly £10,000 a year on £100k gross. Standard scheme with full input VAT recovery on timber, hardware and finish purchases would be £20,000 output minus £4,400 input (22% of £20k of VATable purchases) = £15,600 net. Standard scheme is worse on cash VAT, but the owner suspects the upcoming growth will quickly push past the FRS £230k ceiling and a complex two-step switch a year later is not appealing. The owner picks Standard with Cash Accounting (eligibility: £1.35m turnover ceiling, easily met) - paying HMRC only when customers pay her solves the cash-flow issue of B2C consumers paying 60+ days late on the larger furniture commissions.

First return: 1 September to 30 November 2026. First VAT period ends 30 November 2026 (HMRC chose a March/June/September/December stagger group). First return due 7 January 2027. Output VAT on cash received in the period: £4,200. Input VAT on supplier invoices paid in the period: £840. Net VAT due to HMRC: £3,360. Paid by direct debit on 7 January 2027.

The B2C margin pressure. Through 2027 the owner finds that the B2C portion of work (now VAT-bearing) has slowed - some homeowners have switched to unregistered competitors. The B2B portion has grown because contractors prefer VAT-registered subcontractors (no pricing distortion). The mix shifts to 50/50, then 40/60 toward B2B. By end-2027 turnover is £140k. By 2028 Bramble crosses £230k and would have left the Flat Rate Scheme - confirming the early decision to stay on the standard scheme. This is a typical growth trajectory: the decision tree at registration is durable for years afterward.

13. Frequently asked questions

When exactly do I have to register for UK VAT?

You must register for VAT within 30 days of two events: first, the end of any month in which your rolling 12-month VAT-taxable turnover exceeded £90,000 (the historic test); or second, the day on which you reasonably expect your VAT-taxable turnover to exceed £90,000 in the next 30 days alone (the future test). The 12-month period is rolling, not the tax year or calendar year, so you must monitor turnover at the end of every month. Registration is effective from the first day of the second month after the threshold was breached on the historic test, or from the date you expected the breach on the future test.

What counts as VAT-taxable turnover for the £90,000 threshold?

VAT-taxable turnover is the total value of everything you sell that is not VAT-exempt, including standard rated, reduced rated and zero rated sales. It includes goods supplied free or for less than market value to staff, sales to overseas customers that would have been taxable in the UK, business assets sold that you reclaimed VAT on, and reverse-charge services you received from overseas suppliers. It excludes VAT-exempt sales (financial services, insurance, certain education and healthcare), out-of-scope sales (most non-UK supplies of services to overseas business customers), and capital assets sold that you never reclaimed VAT on. The figure is taken net of VAT itself.

Can I register for VAT voluntarily before I hit £90,000?

Yes. Any UK business making taxable supplies can voluntarily register at any turnover level, even zero turnover if you can demonstrate an intention to trade. Voluntary registration lets you reclaim input VAT on purchases and pre-registration expenses, gives the business a more established appearance to B2B customers, and avoids the future-test cliff when growth accelerates. The trade-off is the compliance burden (quarterly returns, MTD-compatible software, digital record-keeping) and the need to charge 20% to customers, which is a real margin issue if you sell to consumers who cannot reclaim it themselves.

How long does VAT registration take?

HMRC publishes a target of 30 working days from receiving a complete application to issuing the VAT Registration Number (VRN), but most online applications are processed in 10 to 20 working days. Complex cases involving group registration, non-UK establishments, or HMRC further-information requests can take 60 to 90 days. You can start charging VAT from your effective date of registration even before the VRN arrives, but you must not show "VAT" as a line item on invoices until the VRN is issued. Common practice is to issue invoices at a VAT-inclusive total and then reissue corrected VAT invoices once the VRN arrives, or to delay invoicing where the customer agrees.

Can I backdate my VAT registration?

Yes for voluntary registration, normally up to four years before the application date. You select an effective date of registration (EDR) on form VAT1 and HMRC usually accepts the chosen date provided it is consistent with the business activity at that point. The backdated registration lets you reclaim input VAT on relevant purchases from the EDR onwards (subject to the four-year cap on pre-registration goods still on hand and six months on services), but you must also account for output VAT on every sale made from the EDR onwards - which may mean recharging or absorbing the VAT on past invoices. For mandatory registration that was missed, HMRC compulsorily backdates to the date you should have registered and charges late-registration penalties.

When can I deregister from VAT?

You must deregister if you stop making taxable supplies (cease trading, sell the business as a going concern with no VAT-able activity, or your supplies become wholly exempt). You can voluntarily deregister if your VAT-taxable turnover in the next 12 months is expected to fall below £88,000. You apply on form VAT7. HMRC then sets a deregistration date and you file a final VAT return covering the period to that date. Output VAT is also payable on the open-market value of stock and business assets you keep at deregistration if total VAT due exceeds £1,000 - this prevents businesses deregistering to dodge VAT on assets they bought VAT-free.

What is the difference between VAT exempt and zero rated?

Zero rated supplies are still taxable supplies, just at a rate of 0%. They count toward the £90,000 registration threshold and the seller can reclaim input VAT on related costs. Most foods, books, newspapers, childrens clothes, and exports of goods outside the UK are zero rated. VAT exempt supplies are outside the VAT system entirely - they do not count toward the threshold, the seller cannot reclaim input VAT on related costs, and no VAT is charged. Financial services, insurance, postal services, betting, most education, most healthcare and the sale of land or buildings (with option-to-tax exceptions) are exempt. A business making only exempt supplies cannot register for VAT at all.

Do I need to register for VAT if I only sell to overseas customers?

It depends on what and to whom. Exports of goods to customers outside the UK are zero rated and still count toward the £90,000 threshold - so a UK exporter shipping £200,000 of goods to the US per year must register for VAT in the UK even though every sale is zero rated, because the threshold test is on taxable turnover (zero rated counts). Services to overseas business customers (B2B) are usually outside the scope of UK VAT under the general place-of-supply rule, and do not count toward the threshold. Services to overseas consumers (B2C) usually do count and are charged at the UK 20% rate, with some exceptions for digital services that go through the OSS scheme.

What is Making Tax Digital for VAT and is it mandatory?

Making Tax Digital (MTD) for VAT is the requirement to keep digital VAT records and file VAT returns through MTD-compatible software using HMRC application programming interfaces. It has been mandatory for all VAT-registered businesses since 1 April 2022, regardless of turnover - the original April 2019 phase only caught businesses above the threshold, but the universal extension three years later brought voluntary registrants in too. Acceptable software ranges from full accounting packages (Xero, QuickBooks, Sage, FreeAgent, Zoho) to spreadsheet-bridging tools. Manual paper records or PDF spreadsheets that cannot be electronically read by HMRC are no longer acceptable. Penalties apply for non-compliance.

Can I register two companies together as a VAT group?

Yes if both are bodies corporate (limited companies, LLPs, certain other corporate forms) under common control. Common control is normally defined as one controlling the other or both being controlled by the same third party - the test is more flexible than ordinary group accounts. A VAT group files one combined VAT return through a single representative member, treats inter-group supplies as disregarded for VAT, and shares joint and several liability for the group VAT liability. It is useful for groups with substantial intra-group supplies (eg a holding company that recharges staff costs to subsidiaries) because the disregard eliminates the VAT compliance burden on those internal flows. Apply on form VAT50/51.

What is the partial exemption de minimis rule?

A partially exempt business cannot normally reclaim input VAT attributable to its exempt activities. The de minimis rule provides a small-business safety valve: if total exempt-related input VAT is no more than £625 per month on average and no more than 50% of total input VAT, then all input VAT (including the exempt-related portion) can be reclaimed in full. The test is applied for each VAT period and then a full annual adjustment is made at year-end. The rule keeps the smallest partially-exempt businesses out of the complex annual adjustment calculations - think a dentist with a small over-the-counter retail counter where the retail VAT-recoverable element is tiny relative to the exempt dental fees.

How does the domestic reverse charge for construction services affect VAT registration?

The domestic reverse charge (DRC) for building and construction services has been in force since 1 March 2021. For B2B specified construction supplies between two CIS-registered parties, the customer accounts for both output and input VAT on its own return - the subcontractor invoices net of VAT and does not collect VAT from the contractor. Crucially for registration, the value of reverse-charge supplies still counts toward the supplier subcontractors £90,000 registration threshold even though no VAT is collected. Many subcontractors trading just under threshold have found that growth into DRC contracts forces VAT registration without any of the cash-flow benefit of holding VAT receipts in the bank.

14. Related calculators and guides

• VAT Flat Rate Scheme guide - sector rates, the 16.5% limited cost trader test, the 1% first-year discount and four worked examples.
• VAT calculator - add or remove VAT from any net or gross figure at 20%, 5% or 0%.
• CIS (Construction Industry Scheme) calculator - 20% / 30% deductions on subcontractor invoices, interacts with the construction domestic reverse charge.
• Self Assessment step by step - the full SA filing walk-through for sole traders.
• How UK tax works - the canonical UK tax explainer, covering PAYE, NIC, Self Assessment, pensions and CGT.
• Self-employed calculator - sole trader profit to take-home, including Class 2 / Class 4 NI.
• Corporation Tax calculator - small profits, main rate and marginal relief modelling for limited companies.
• Sole Trader vs Limited Company - structural comparison including VAT considerations.
• UK tax glossary - every UK tax term defined in plain English (158 terms, A to Z).

Primary sources: gov.uk/register-for-vat, VAT registration thresholds, VAT Notice 700/1, VAT Notice 700/2 (groups), VAT construction topic, and Making Tax Digital publications. All figures retrieved on 2026-05-25.