ISA Allowance 2026/27: £20,000 Tax-Free Limit and Account Types

QWhat is the ISA allowance for 2026/27?

£20,000 - the total amount you can pay into ISAs across all types in the 2026/27 tax year (6 April 2026 to 5 April 2027). This allowance is per individual, not per household - a married couple can each contribute £20,000, for £40,000 of joint tax-free savings annually. The £20,000 limit has been held at this level since April 2017 (Autumn Statement 2016 set it at £20k, up from £15,240) and has not been increased since. The Chancellor sets the ISA subscription limit each year; there is no separately legislated multi-year freeze end date for it. The British ISA (additional £5,000 for UK shares only) proposed by the Conservative government in Spring Budget 2024 was SCRAPPED by Labour in Autumn Budget 2024 - no British ISA launched, original £20k limit unchanged. JISAs (Junior ISAs) get their own separate £9,000 allowance per child per year - does NOT count toward your £20k adult allowance.

QHow is the £20,000 split across different ISA types?

Your choice. The £20,000 can go into any combination of: Cash ISA (savings account-style, FSCS-protected up to £120k per institution), Stocks & Shares ISA (S&S - invests in shares, funds, ETFs, bonds), Lifetime ISA (LISA - up to £4,000 of your £20k, gets 25% gov top-up), Innovative Finance ISA (IFISA - peer-to-peer lending, riskier). From April 2024 you can pay into MULTIPLE ISAs of the same type in one tax year (rule change - prior to April 2024 you could only pay into one Cash ISA per year, one S&S ISA per year). Single-account-per-type restriction was removed. LISA is the only one with a sub-cap: max £4,000 per tax year within your £20k limit. Other types share the rest of the £20k flexibly. You could put £4k into LISA + £8k into Cash ISA + £8k into S&S ISA = £20k total, or any other combination. Junior ISAs have a SEPARATE £9,000 allowance per child per year and do not count toward the adult £20k.

QWhat is the Lifetime ISA (LISA) bonus worth?

25% government top-up on contributions up to £4,000 per tax year - max £1,000 bonus per year. Contribute £4,000 → government adds £1,000 → £5,000 in your LISA. Eligibility: must be 18-39 to OPEN an account (can continue contributing until age 50). LISA money can be withdrawn tax-free at age 60+ for retirement OR before age 60 to fund a first home purchase up to £450,000 (England and NI; £450k for Scotland and Wales since FY24/25 update). Penalty for any other withdrawal: 25% of the amount withdrawn (works out to penalising your own contribution by 6.25% PLUS clawing back the government bonus - because 25% of £5k = £1,250 vs the £1,000 received). The £450k house price cap was raised proposal by the Treasury Committee but Conservative-then-Labour government held it firm. Most cost-effective use of LISA: a first-time buyer in their 20s using max £4k/year for 10 years = £40k contributed + £10k bonus + investment growth = £60-70k toward a first home deposit.

QWhat is the Junior ISA (JISA) allowance?

£9,000 per child per tax year (frozen since April 2020). Junior ISAs are completely separate from the adult £20k allowance. Each parent can contribute on behalf of their child - the £9k is total across cash + stocks-and-shares JISAs combined. Money is locked until the child turns 18, at which point the JISA converts automatically into an adult ISA in the child's name. The 16-18 transition rule: at 16 the child can take CONTROL of the JISA (manage investments, decide deposits) but cannot WITHDRAW until 18. From 16 they can also open their own ADULT ISA in addition to the JISA - in 2023/24 and earlier, 16-17 year olds had effectively a £29k combined allowance (£9k JISA + £20k adult Cash ISA). This loophole was CLOSED from April 2024 - now 16-17 year olds can only have a JISA, not a separate adult Cash ISA. Maximum contribution by parents over 18 years of child's life: 18 × £9k = £162,000 plus investment growth typically reaches £200-300k at 8% real return.

QWhat is a "flexible ISA" and why does it matter?

A flexible ISA lets you WITHDRAW money and REPLACE it within the same tax year without using up additional allowance. Worked example: contribute £15,000 in April, withdraw £5,000 in December, re-deposit £5,000 in March - your total contribution for the tax year is still £15,000 (not £20,000), so you have £5,000 of remaining headroom. WITHOUT flexible feature, the £5,000 re-deposit would count as new contribution and you'd exhaust the £20k allowance. Not all ISAs are flexible - it's a provider feature. Common flexible ISAs: most NS&I (Premium Bonds is not an ISA), Nationwide Cash ISA, Vanguard Stocks & Shares ISA (most platforms support flexible withdrawals on cash holdings but not on investments), Marcus by Goldman Sachs. NOT flexible: Lifetime ISA (penalty applies on early withdrawal), most Cash ISAs from challenger banks. Worth checking before you withdraw - if your ISA is not flexible, withdrawals permanently lose that year's allowance.

QISA vs SIPP - which is better for retirement saving?

Depends on your marginal tax rate now vs in retirement. Self-Invested Personal Pension (SIPP) wins for higher-rate earners: gets 40% upfront tax relief, taxed at 20% on withdrawal (assuming you're basic-rate in retirement) = 20pp arbitrage. £10k contribution costs £6k net, grows to £25-50k over 25 years, you withdraw at 20% = £20-40k net. Same £10k into ISA: £10k net cost, same growth, £25-50k tax-free withdrawal. SIPP edges ISA by ~10-15% net for higher-rate earners. ISA wins for flexibility: accessible at any age (vs SIPP locked until 55/57), no withdrawal tax (vs SIPP 25% PCLS + marginal rate on rest), used for any purpose (vs SIPP retirement-only). For basic-rate earners: ISA roughly ties SIPP in pure tax efficiency (20% relief in = 20% tax out = neutral). ISA wins on flexibility. Practical rule: maximise SIPP up to employer match if any, then maximise ISA, then return to SIPP if any AA remaining. The Annual Allowance £60k applies to pension; the £20k ISA limit applies separately. Combined you can shelter £80k of after-tax savings per year. See our max pension contribution calculator for the SIPP / AA side.

QWhat happens to my ISA if I die?

Inherited ISA Allowance (APS - "Additional Permitted Subscription"). When an ISA holder dies, their surviving spouse / civil partner gets an additional one-off ISA allowance equal to the value of the deceased's ISA at death. This is on TOP of the spouse's own £20k annual allowance. Example: husband dies holding £150k in ISAs. Wife gets her own £20k annual allowance for that tax year PLUS a £150k "APS" allowance she can contribute over 3 years. So wife can contribute £20k regular + up to £150k APS = £170k of tax-free new contributions. The APS is only available where you were legally married or in a civil partnership at the time of death. The deceased's ISA itself: if the inheriting spouse is the named beneficiary, the assets transfer directly without losing ISA wrapper status (provided the spouse files a Form 3X with the ISA provider within 3 years). For non-spouse beneficiaries, the ISA wrapper terminates on death - assets become part of the deceased's estate, ISA tax benefits cease, future investment growth and dividends become taxable in the beneficiary's hands. IHT applies to ISA assets like any other - the ISA wrapper does NOT protect against inheritance tax.

QCan I transfer ISAs between providers?

Yes - and you SHOULD periodically. ISA transfers do not count against your annual £20,000 allowance. Two transfer types: Current-year contributions - if you've contributed to an ISA this tax year, you must transfer the ENTIRE current-year contribution to one new provider (cannot split). Previous-year contributions - can be split, partial-transferred to multiple providers. Transfer process: NEW provider initiates the transfer via "ISA Transfer Form" - never withdraw and re-deposit yourself (that counts as new contribution and uses up allowance). HMRC requires providers to complete Cash ISA transfers within 15 working days, S&S ISA transfers within 30 working days. Older accounts often have inferior interest rates - savings rate dispersion between best and worst Cash ISAs is typically 2-3 percentage points. Worth checking your Cash ISA rate annually and transferring to a market-leader if more than 0.5pp behind. S&S ISA transfers: choose by fund availability (some platforms restrict to their own funds), platform fees (Vanguard 0.15% capped £375/year, AJ Bell 0.25%, Hargreaves 0.45%, free at Trading 212), and customer service quality.

QAre ISAs really tax-free? What about CGT and dividend tax?

Yes, genuinely tax-free for the holder. Inside an ISA: no income tax on interest (Cash ISA, IFISA), no income tax on dividends (S&S ISA), no Capital Gains Tax on share / fund sales (S&S ISA), no need to declare ISA income on Self Assessment. The only tax that touches ISA assets is foreign withholding tax on overseas dividends (e.g. US 15% under W-8BEN treaty, not refundable into the ISA). Inheritance Tax does apply to ISA holdings on death - the ISA wrapper provides income / CGT protection, not IHT protection. The "tax-free" status is granted by the Individual Savings Account Regulations 1998 (SI 1998/1870) and confirmed in Part 6 of ITTOIA 2005. Total ISA assets across UK adults reached £779 billion by end of 2023/24 (HMRC ISA Statistics 2024), with ~22 million adult ISA holders. Average ISA balance: ~£35,000, but distribution is heavily skewed - top 10% of ISA holders hold ~50% of total ISA assets.

QShould I open my ISA on 6 April or wait until the end of the tax year?

Earlier is mathematically better for investing-style ISAs (S&S ISA, IFISA). Each month of additional invested time generates ~0.5% of expected return on average UK / global stock-index funds. £20,000 invested 6 April vs same £20k invested 5 April next year = ~12 months of compounding difference = ~£1,200 of expected return foregone at 6% annual real return. For Cash ISAs the timing matters less because rates are similar across the year, but you still earn interest from the deposit date. The "ISA season" January-March marketing push by providers is a behavioural bias on the saver's side - they're more aware of the deadline approaching but mathematically have been losing out for 9 months. Best practice: set up a standing order on 6 April for £1,667/month into your S&S ISA - that's £20,004 over 12 months, fills the allowance evenly, also benefits from "pound-cost averaging" smoothing market volatility. Lump-sum 6 April is mathematically optimal (more time in market) but pound-cost averaging is psychologically easier for many savers.

QWhat is the Help to Buy ISA? Is it still open?

CLOSED to new applications since 30 November 2019 (Help to Buy ISA Regulations 2015). Existing Help to Buy ISA holders can continue contributing until 30 November 2029 and claim the bonus until 1 December 2030. Help to Buy ISA was: £200/month contribution cap, £1,200 first-month bonus contribution allowed, 25% government top-up paid when you exchange contracts on a first-home purchase (max £3,000 bonus on £12,000 of contributions). The successor product is the Lifetime ISA (LISA) - more generous (£4k/year cap vs £200/month = £2,400/year, £1k/year bonus vs ~£500/year on Help to Buy). Most Help to Buy ISA holders should consider transferring to LISA - the higher allowance and more flexible use (retirement OR first home) generally outweighs the slightly different rules. CANNOT have both Help to Buy ISA AND LISA bonus on the same property - choose one at purchase. The Help to Buy ISA £450k property price cap (£250k outside London) is much lower than LISA's £450k everywhere.

QWhat about the Personal Savings Allowance and Dividend Allowance?

These are SEPARATE tax-free allowances OUTSIDE ISAs. Personal Savings Allowance (PSA): £1,000 for basic-rate, £500 for higher-rate, £0 for additional-rate taxpayers (Section 12B ITA 2007). Applies to bank interest, gilt interest, government bond interest. Dividend Allowance: £500 for everyone (Section 13A ITA 2007, inserted by FA 2016 and reduced from £1,000 to £500 by FA 2023 from 6 April 2024), applies to UK and foreign dividends. So a basic-rate earner can hold significant non-ISA cash before paying interest tax: ~£20,000 in a 5% savings account generates £1,000 of interest, exactly covered by PSA. ISAs become more valuable above these thresholds. For most basic-rate workers with sub-£10k cash savings, an ISA wrapper provides no current tax benefit - the savings would be PSA-covered anyway. ISAs are most valuable for: higher-rate / additional-rate taxpayers (no or reduced PSA), large balances exceeding PSA, equity investors (no Dividend Allowance limit inside ISA), long-term compounding (eventual interest / dividends would exceed PSA / DA). See our dividend tax calculator for the full dividend tax mechanics outside ISAs.