UK VAT registration guide (2026/27)

1. Overview

Value Added Tax 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 keeps the smallest UK traders outside the VAT system. Many businesses 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 several 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 set out in section 3 of VAT Notice 700/1 and on gov.uk.

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 register by the end of that 30-day period, and registration is effective from the day you realised. 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 on 20 October, to be delivered and invoiced in full by 15 November. On 20 October the consultancy has reason to expect its taxable turnover in the next 30 days alone to go over £90,000, so it must register by the end of that 30-day period and registration is effective from 20 October - the date it realised. (If the work would only be invoiced after the 30 days ran out, the future test would not be met on 20 October.) VAT is due on its sales from that date, but it cannot show VAT on invoices until the VAT number arrives: it can raise its prices to cover the VAT and then send VAT invoices within 30 days of getting the number.

The exception: temporary breach with permission. If a one-off spike pushed you over £90,000 but you can show HMRC that your taxable supplies will not go over the deregistration threshold (currently £88,000) in the next 12 months, you can apply for exception from registration (VAT Notice 700/1 para 3.7). The application is made by post on form VAT1. If HMRC is not satisfied, it registers you from the date you were liable, so apply as early as possible. Sales of capital assets do not count toward the threshold in the first place.

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 (buildings, equipment, vehicles) do not count. Services you reverse charge from overseas suppliers count. Construction work counts too: before you register it is ordinary taxable turnover, because the construction domestic reverse charge applies only between VAT-registered businesses.

The £90,000 threshold rose from £85,000 on 1 April 2024 - the first increase since it was set at £85,000 in 2017. While the threshold stays the same in cash terms, inflation brings more businesses over it each year.

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 common. 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 (VAT-exclusive) recovers £1,600 a year (20% of £8,000) through voluntary registration. The customer is unaffected. Set that against the cost of MTD-compatible software and the time spent on returns.

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 (VAT Notice 700/1 section 5).

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 growing toward the threshold, the argument for registering voluntarily strengthens.

The deregistration option. Voluntary registration is reversible. If you register at £40k expecting growth that does not materialise, you can deregister once your taxable turnover is below £88,000. So the commitment is not permanent - but if you backdated, the agreed registration date will not normally be changed.

4. Deregistration at £88,000

Deregistration is the mirror image of registration and is covered by VAT Notice 700/11 and the gov.uk cancellation guidance. 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 joining a VAT group. You must cancel within 30 days or you might be charged a penalty. Many cancellations can be made online; some (for example after liquidation, or a sale where the new owner is not taking the number) must be made by post on form VAT7. A sale as a going concern where the buyer keeps your VAT number is a transfer of registration, not a cancellation.

Voluntary deregistration at £88,000. You can ask HMRC to cancel your registration if your VAT-taxable turnover falls below £88,000 (the deregistration threshold, £2,000 below the registration threshold). HMRC will automatically re-register you if it decides you should not have cancelled, and you would have to account for the VAT you should have paid in the meantime - so base the request on a genuine fall in turnover.

The final return: stock and assets at deregistration. The most-overlooked deregistration mechanic is the requirement to account for VAT on stock and other assets you still hold on the deregistration date if you reclaimed (or could have reclaimed) VAT when you bought them and the total VAT due on them is over £1,000. This can include vehicles, computer equipment, machinery, fixtures and stock for resale. It does not apply where you could not reclaim VAT on the purchase, or where the total VAT due is £1,000 or less. 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 confirms the cancellation date - either when the reason for cancelling took effect (for example when you stopped trading) or the date you asked to cancel. You must stop charging VAT from that date and keep VAT records for 6 years. The final return covers the period up to and including the cancellation 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

You can usually register online through gov.uk/register-for-vat. Paper form VAT1 is required in specific cases, including an application for exception from registration, joining the Agricultural Flat Rate Scheme, an LLP registering as the representative member of a VAT group, divisional registration, local authorities and councils, and insolvency practitioners registering a business.

Step 1: gather your information. You will need (per gov.uk) your company registration number for a limited company, or your National Insurance number and an identity document as an individual or partnership; your business bank account details; your Unique Taxpayer Reference (UTR); details of your annual turnover; and an estimate of your taxable turnover for the next 12 months. 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 later VAT services, so keep the sign-in details secure.

Step 3: complete the online VAT1. The online flow covers business details, activity, turnover history, expected turnover, the effective date of registration (EDR) and bank details. You can save and come back to it. The most important is the EDR: for mandatory registration this is fixed by the threshold-breach mechanics; for voluntary registration HMRC may allow backdating by up to 4 years.

Step 4: submit and wait. After submission wait. VAT Notice 700/1 asks you not to contact HMRC until 40 working days have passed. HMRC then sends by post your 9-digit VAT Registration Number (VRN), confirmation of your effective date of registration, information on your first VAT return and payment, and how to set up your business tax account. HMRC also signs you up to Making Tax Digital for VAT unless you are exempt.

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 and bridging software for existing spreadsheets; HMRC publishes a list of compatible software.

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. A late return earns a penalty point under the points-based regime that applies to VAT periods starting on or after 1 January 2023.

6. VAT accounting schemes

This guide groups the choices into five: standard accounting (the default) and four alternatives that are optional or sector-specific, each with its own eligibility rules and 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. Suits businesses with significant input VAT (so reclaim is material) and those 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. You leave the scheme if turnover (including VAT) goes over £230,000. Simpler bookkeeping; the 16.5% limited cost business rate, introduced in 2017, often makes it poor value for service businesses with few goods purchases. 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. Make advance payments based on your last returns (or an estimate if you are new to VAT): either nine monthly payments of 10% of the estimated bill, due at the end of months 4 to 12, or three quarterly payments of 25%, due at the end of months 4, 7 and 10. A balancing payment is then due with the annual return within 2 months of the end of the year. Useful for cash flow predictability and lower admin burden. Can be combined with the Flat Rate Scheme. Disadvantage: if turnover grows fast, instalments based on the old figures can leave 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 three 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. (The reverse charge for specified goods such as mobile phones and computer chips is an anti-fraud rule, not a margin 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. Each scheme has its own joining and leaving rules on gov.uk.

7. Group registration

A VAT group is two or more eligible persons under common control that register together as a single taxable person. Bodies corporate (including LLPs) are eligible, and since 1 November 2019 individuals and partnerships that control the UK bodies corporate can join too. 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. All members must be controlled either by one member of the group (a body corporate, individual or partnership) or by a single other person outside the group. Control has a special meaning based on the holding company and subsidiary definition in section 1159 of, and Schedule 6 to, the Companies Act 2006 (VAT Notice 700/2 paras 2.2 and 2.9).

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 looking at partial exemption across the whole group - the de minimis limits apply to the group as a whole, not to each member.

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. Include form VAT50/51 with your application. You add or remove members later with a VAT50-51 amend form. Disbanding the group is done by post, sending form VAT7 together with a VAT50-51 form.

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 (to 2 decimal places if residual input VAT averages more than £400,000 a month).

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. It suits a mainly taxable business with a small exempt sideline, where the input VAT linked to the exempt activity is small. (VAT Notice 706 section 11 also has two simplified tests based on total input VAT.)

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 difficult and costly.

9. Place of supply rules

Where a supply takes place determines which country's VAT (if any) applies. The detailed mechanics for services are in VAT Notice 741A; exports of goods are covered by VAT Notice 703.

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. UK businesses supplying digital services to EU consumers owe VAT in the consumer's member state. Rather than registering in each one, they can register for the EU non-Union OSS in a single member state and declare those sales on one quarterly return at each consumer country's rate. In the other direction, an overseas business with no UK establishment making taxable supplies in the UK must register for UK VAT whatever its turnover (VAT Notice 700/1, non-established taxable persons). For low-value goods sent to EU consumers, the EU's Import One Stop Shop (IOSS) is an option.

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 set out in HMRC's guidance and VAT reverse charge technical guide for building and construction services.

When DRC applies. It applies to standard and reduced rated building and construction services supplied between businesses registered for VAT in the UK, where the payment is reported within the Construction Industry Scheme (CIS) and the customer is not an end user or intermediary. The services list matches CIS construction operations: constructing, altering, repairing, extending or demolishing buildings and structures, civil engineering works, installing heating, lighting, air-conditioning, ventilation, power supply, drainage, sanitation, water supply or fire protection systems, painting and decorating, and preparatory work such as site clearance, excavation and scaffolding. Professional work such as architects' and surveyors' services is excluded.

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 for a fully taxable contractor. VAT is charged in the normal way when the work is supplied to the end user.

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 the reverse charge removes the VAT payment that a fraudulent subcontractor could otherwise collect and fail to pay over.

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 the CIS work for VAT-registered contractors will then be invoiced under the reverse charge. 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; from 1 April 2022 it extended to businesses registered below it too. Full guidance is in VAT Notice 700/22.

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, including mainstream cloud accounting packages. 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. Failing to keep digital records or to file through compatible software can lead to penalties, on top of the points-based late-submission and late-payment penalties that apply to VAT periods starting on or after 1 January 2023.

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 with qualifying income over £50,000 from 6 April 2026, over £30,000 from 6 April 2027 and over £20,000 from 6 April 2028, based on the income in an earlier tax return (gov.uk). The same principles of digital record-keeping and software submission 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.

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. That month between the end of the month of the breach and the effective date of registration is the breathing space built 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 MTD-compatible accounting software, applies online on 5 August and, in this illustration, receives the VRN by post later that month (it can take longer - VAT Notice 700/1 says to allow 40 working days before chasing). EDR confirmed as 1 September. Until the VRN arrives, invoices cannot show VAT separately, but prices can be increased to cover it and VAT invoices sent within 30 days of getting the number.

Scheme choice. The owner compares the options on illustrative figures of £100,000 of sales before VAT (£120,000 including VAT) and £20,000 of VAT-able purchases before VAT. Standard scheme: £20,000 output VAT minus £4,000 input VAT (20% of £20,000) = £16,000 to HMRC. Flat Rate Scheme at the 9.5% rate for general building or construction services (assuming the business is not a limited cost business): 9.5% of £120,000 = £11,400 to HMRC (8.5% in the first year with the 1% discount). The Flat Rate Scheme is cheaper on these figures, but the owner expects growth to push turnover past the scheme's £230,000 (VAT-inclusive) exit point within a couple of years and does not want to switch twice. The owner picks Standard with Cash Accounting (eligibility: taxable turnover of £1.35m or less, 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 (in this example HMRC allocated the February/May/August/November stagger). The return and payment are due by 7 January 2027 - one month and seven days after the period end. Illustrative figures: output VAT on cash received in the period £4,200, input VAT on supplier invoices paid £840, net VAT due to HMRC £3,360.

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 one illustrative growth path, not a forecast.

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 Capital Gains Tax (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, calculating taxable turnover, VAT Notice 700/1, VAT Notice 700/2 (groups), VAT construction topic, and VAT Notice 700/22 (Making Tax Digital for VAT). Rules re-checked against these sources on 2026-10-15.