Lifetime ISA (LISA) explained
A plain-English guide to the UK Lifetime ISA for first-time buyers — how the 25% government bonus works, the £450,000 property cap, the 25% withdrawal penalty, and when a LISA actually beats a regular savings account.
- Understand how the 25% bonus works
- Know the rules and the penalty
- Decide if a LISA fits your situation
Built for UK first-time buyers. This is a planning guide — speak to a regulated financial adviser for advice tailored to your situation.
Quick answer
A Lifetime ISA (LISA) is a UK savings or investment account for first-time buyers and retirement savers. You can put in up to £4,000 per tax year and the government adds a 25% bonus on top — up to £1,000 per tax year, free.
The catch: the money (plus bonus) can only be used toward a first home up to £450,000, or withdrawn from age 60. Use it for anything else and you lose 25% of the withdrawal — which costs more than the bonus you earned.
For most UK first-time buyers under 40 who’ll buy within a reasonable timeframe, the bonus easily outweighs the lock-in risk. Open one early — every tax year you skip is up to £1,000 in lost bonus.
Who can open a Lifetime ISA?
Five eligibility rules to clear before opening.
- Aged 18-39 at opening
You must open the LISA before your 40th birthday. Once it's open you can keep contributing until age 50, but you can't open a new one after 40.
- UK resident
You must be a UK resident for tax purposes. Crown servants posted abroad (and their spouses) also qualify.
- Buying a first home, OR saving for retirement
The LISA can be used for a first home (or after age 60). Using the bonus for anything else triggers a 25% withdrawal charge that costs you more than the bonus.
- Property under £450,000
The home you buy with LISA funds must be £450,000 or less, anywhere in the UK. The cap doesn't scale with London prices or property type.
- Buying with a mortgage
LISA funds can only be released to buy a property with a mortgage (residential, not buy-to-let). Cash buyers can't use the LISA bonus.
How the 25% bonus works
Four moving parts to the bonus mechanic.
- Contribute up to £4,000 per tax year
The annual LISA allowance is £4,000 (this is part of your overall £20,000 annual ISA allowance, not on top of it). The tax year runs 6 April to 5 April.
- Government adds 25% on top
HMRC pays the 25% bonus automatically. The full £4,000 contribution earns a £1,000 bonus per tax year, paid into your LISA. Maximum lifetime bonus if you contribute the max every year from 18-50: £33,000.
- Bonus paid monthly
Bonuses are claimed by your LISA provider each month based on contributions in the previous month. Most providers credit the bonus within 4-6 weeks of your contribution.
- Interest or investment growth on top
Cash LISAs pay interest (like a savings account); stocks & shares LISAs invest in funds. The 25% bonus is paid in addition to interest or growth, and any interest/growth on the bonus also stays tax-free.
Worked example: 5 years of maxing out
Illustrative growth for a fictional saver contributing the full £4,000 each tax year into a Cash LISA at 4.5% interest. Real interest rates vary.
| Year | Contribution | Bonus | Interest | Running balance |
|---|---|---|---|---|
| Year 1 | £4,000 | £1,000 | £100 | £5,100 |
| Year 2 | £4,000 | £1,000 | £304 | £10,404 |
| Year 3 | £4,000 | £1,000 | £520 | £15,924 |
| Year 4 | £4,000 | £1,000 | £748 | £21,672 |
| Year 5 | £4,000 | £1,000 | £987 | £27,659 |
Illustrative only. After 5 years of maxing out: £20,000 contributed, £5,000 in bonus, £2,659 in interest = £27,659 toward a deposit. Of that, £7,659 came from the government and interest — money you wouldn’t have had in a non-LISA account.
For a calculator that models your specific scenario including partial-year contributions and different interest rates, use the LISA calculator.
The 25% withdrawal penalty
The LISA’s biggest catch. When you can withdraw without penalty, and what happens when you can’t.
| Reason for withdrawal | Charge | What that means |
|---|---|---|
| Buying a first home under £450,000 | No penalty | Full balance including bonus + interest released to your solicitor for the purchase. |
| Withdrawing after age 60 | No penalty | Full balance available tax-free as a retirement supplement. |
| Diagnosed terminally ill with under 12 months to live | No penalty | Full balance available immediately, tax-free. |
| Any other reason | 25% withdrawal charge | Effectively costs you about 6.25% of what you originally put in — you lose the bonus AND a small slice of your own capital. |
The penalty maths are worse than they look. Because the 25% penalty applies to the larger total (your contribution plus the bonus you received), you end up losing the bonus AND a small slice of your own capital. £4,000 contributed becomes £5,000 with bonus; withdraw early and you get back £3,750 — net £250 worse than if you’d stuck with a regular savings account.
Cash LISA vs Stocks & Shares LISA
Both versions of the LISA get the same 25% bonus. The difference is how the rest of the money grows.
Cash Lifetime ISA
Pays interest like a savings account. Capital protected; predictable. Interest rates typically 3-5% (varies by provider and market conditions). Right for buyers planning to use the money within 3-5 years.
Best for: Most first-time buyers planning to buy within 5 years — capital safety matters more than potential growth on a short horizon.
Stocks & Shares Lifetime ISA
Money is invested in funds (typically equity, bond, or mixed-asset). Can grow faster long-term but values fluctuate. Worth considering if you're 5+ years from buying or using it primarily for retirement.
Best for: Buyers with 5+ year horizons or using the LISA primarily as a retirement supplement.
When a Lifetime ISA isn’t the right choice
Four situations where the LISA isn’t the best move.
- You're already over 40
Can't open a new LISA at 40 or over. Existing LISAs can still receive contributions until 50, but new openings are blocked.
- Your first home will cost over £450,000
Properties above £450,000 don't qualify for the LISA bonus. If you're buying in central London or expecting heavy price growth before purchase, the cap can catch you out. Penalty applies if you withdraw for an above-cap purchase.
- You might not buy within a reasonable timeframe
If your life plans are uncertain (career move abroad, no clear buying timeline, might prefer renting), the lock-in penalty means money tied up at a 25% effective cost if you change your mind.
- You have employer pension matching you haven't maxed out
Employer pension contributions (especially with matching) usually beat LISA returns because the match is free money on top of tax relief. Max out matched pension contributions before LISA in almost all cases.
Common Lifetime ISA mistakes
Five things UK first-time buyers most often get wrong.
- Missing the £4,000 annual cap with extra contributions
Any contributions above £4,000 in a tax year don't earn the bonus. Some providers reject the excess; some accept it but treat it as a regular ISA. Always check before transferring lump sums.
- Forgetting the LISA contributes to your £20,000 ISA limit
The £4,000 LISA contribution counts toward your overall £20,000 annual ISA allowance. If you also contribute to a regular Cash or Stocks & Shares ISA, you have £16,000 left across the others.
- Using a non-conveyancing solicitor for the LISA release
LISA funds must be released directly to your conveyancing solicitor (not to you personally). Some LISA providers require the solicitor to be on a specific panel. Check provider requirements before instructing.
- Buying a property that completes within 12 months of opening
Funds can only be released for a property purchase if your LISA has been open for at least 12 months. Opening a LISA in May and trying to complete in September means the bonus isn't accessible — you'd need to wait or use other funds for the deposit.
- Not opening one early
Every tax year you skip is up to £1,000 in lost bonus. Even if you can only contribute £500 in a given year, opening the LISA preserves the option and the 12-month minimum hold starts running.
Model your LISA
Use the LISA calculator
See what your contributions, bonus and interest would build up to over your specific timeframe. Adjust contribution amounts, interest rate, and target deposit to see how a LISA could shorten your route to a first home.
Lifetime ISA FAQs
Quick answers to the questions UK first-time buyers most often ask about the Lifetime ISA.
What is a Lifetime ISA (LISA)?+
A UK savings or investment account for first-time buyers and retirement savers aged 18-39 at opening. You can contribute up to £4,000 per tax year and the government adds a 25% bonus on top — up to £1,000 per tax year. The money (plus bonus) can be used toward a first home up to £450,000 or withdrawn from age 60. Using it for anything else triggers a 25% withdrawal charge that costs more than the bonus.
Is a Lifetime ISA worth it for a first-time buyer?+
For most UK first-time buyers under 40 who'll buy within a sensible timeframe, yes — easily. The 25% bonus is effectively a guaranteed 25% return on your contribution (up to £1,000/year), which no savings account or investment can reliably match. The lock-in risk (25% penalty if you don't use it for a first home) is the main downside, but for buyers who are serious about a first-home purchase the bonus easily outweighs it.
How much can I get from a Lifetime ISA?+
Maximum £1,000/year in bonus on a £4,000/year contribution. If you open at 18 and max out every year until 50, the bonus alone is £33,000 — and interest or investment growth comes on top. Even contributing for 5 years before buying gets you £5,000 in bonus.
What's the LISA withdrawal penalty if I don't buy a home?+
25% of the amount you withdraw. This sounds equal to the 25% bonus but it isn't — because the 25% penalty applies to the larger total (bonus + contribution + interest), not just the contribution. Net effect: you lose the bonus AND about 6.25% of what you originally put in. £4,000 contributed becomes £5,000 with bonus; withdraw it early and you get back £3,750.
What's the LISA property price cap?+
£450,000 anywhere in the UK. The cap doesn't scale with London or South-East prices. If your first home costs more than £450,000 you can't use LISA funds toward it — withdrawing would trigger the 25% penalty. Many London buyers run into this and have to either choose under-£450K properties or accept the penalty.
Can I use a LISA and a Help to Buy ISA?+
Help to Buy ISAs closed to new applications in 2019. Existing HTB ISAs can continue receiving contributions until November 2029, but the bonus must be claimed by December 2030. You can hold BOTH a LISA and an HTB ISA, but you can only use the bonus from ONE of them toward a first home purchase. Most savers transfer their HTB ISA into a LISA to capture both bonuses on the LISA side.
Cash LISA or Stocks & Shares LISA — which is better?+
Cash LISA for buyers planning to use the money within 5 years — capital safety matters more than potential growth on a short horizon. Stocks & Shares LISA for buyers 5+ years from purchase or treating the LISA primarily as a retirement supplement. Equity returns typically beat cash interest over 5+ year periods but lose money over short horizons.
How long does a LISA take to release for a house purchase?+
Once you instruct your conveyancer and they provide the LISA Investor Declaration to your provider, the funds typically release within 30 days. Plan for 4 weeks between starting the release process and needing the funds at completion. Some providers can move faster; new providers and providers with manual processes can be slower.
Can I open a LISA for a child or under-18?+
No. The LISA is only available to people aged 18-39. Under-18s can save in a Junior ISA (different rules, no government bonus). The LISA can only be opened on or after the 18th birthday.
What happens to my LISA if I die before age 60?+
The balance (including bonus) passes to your estate tax-free. Spouses and civil partners can also inherit ISA allowances under the additional permitted subscription rule. There's no withdrawal penalty in this case — the 25% charge only applies to withdrawals made during your lifetime for non-eligible reasons.
Related guides
Other guides that pair well with the LISA decision.
All UK first-time buyer schemes
The LISA is one of five active schemes — compare them all and see how they stack.
How much deposit do you really need?
Where the LISA fits into your overall deposit plan.
How much does buying a house cost?
The LISA bonus helps with deposit. The full cost of buying covers everything else.
Do I need a mortgage broker?
Once you've built the LISA-fuelled deposit, the broker conversation is the next step.
Start the LISA today
Run your specific numbers
Open the LISA calculator to model your contribution pattern, interest rate and deposit target. Then plan the rest of your deposit alongside it.
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