Lifetime ISA Calculator
Your LISA Value at Withdrawal
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Learn More About LISAsYour Contributions
Government Bonus
Interest/Growth
Effective Return
LISA Breakdown
Growth Over Time
⚠️ Early Withdrawal Penalty
If you withdraw before age 60 (except for first home purchase):
Year-by-Year Breakdown
| Year | Your Contribution | Gov Bonus (25%) | Interest/Growth | Total Value |
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Open a Lifetime ISA in under 5 minutes with award-winning provider HL.
How does this Lifetime ISA calculator work?
Our Lifetime ISA calculator takes the guesswork out of planning your house deposit or retirement savings. Here’s what it does:
The calculator works out your potential LISA growth based on how much you contribute and your time horizon.
Enter your starting balance, monthly contributions, and how long you plan to save, and it’ll show you three things: your total contributions, the government bonus you’ll receive, and your projected pot size including interest or investment returns.
The 25% government bonus is calculated automatically on every pound you save, up to £1,000 per year. If you save the full £4,000 annually and you’ll pocket the maximum bonus. The calculator shows this bonus adding up year after year.
The calculator warns you if your initial lump sum and annual contributions are likely to exceed the annual cap.
You can change the expected return rates to represent Cash LISA and Stocks and Shares LISA scenarios – typically 3-5% AER for Cash LISA. For Stocks and Shares LISA, this will depend on your chosen investments but you could look at 5%-8% annually – giving you a realistic range of what your pot could be worth.
You can change your curret age and years to save to reflect your current situation and whether you expect to save for a house or retirement. You’ll quickly spot that starting early makes a massive difference – someone who opens a LISA at 18 could receive 32 years of bonuses for retirement (up to £32,000 free), while someone starting at 39 gets just 11 years of bonuses (£11,000 maximum).
The calculator will also show you the potential early withdrawal penalty if you were to withdraw the full amount from your LISA but without using it towards a first home purchase or retirement. The 25% penalty hits your entire pot, not just the bonus. On a £5,000 pot, you’d pay a £1,250 penalty and walk away with just £3,750. The calculator makes this crystal clear before you make a costly mistake.
All projections are based on current market conditions and government rules.
What is a Lifetime ISA?
A Lifetime ISA is a tax-free savings account designed to help you buy your first home or save for retirement. The government adds 25% to everything you save, up to £1,000 per year – essentially free money to boost your financial goals.
You must be aged 18 to 39 to open a LISA. Once it’s open, you can keep saving into it until you turn 50. The account accepts up to £4,000 per year, and this counts towards your overall £20,000 annual ISA allowance. So if you max out your LISA at £4,000, you’ve got £16,000 left for other ISAs.
There are two types: Cash LISAs work like savings accounts where you earn interest, while Stocks and Shares LISAs invest your money in the market for potentially higher returns. Both get the same 25% government bonus.
The catch? You can only use the money for buying your first home (under £450,000) or after turning 60 for retirement. Use it for anything else and you’ll pay a 25% withdrawal charge on everything you take out.
The government launched LISAs in April 2017 to replace the old Help to Buy ISA, which closed to new applicants in November 2019. If you already have a Help to Buy ISA, you can keep it or transfer it to a LISA – you just can’t use bonuses from both towards the same house purchase.
You can have a LISA alongside other ISAs at the same time. You could open a Cash ISA for your emergency fund, a Stocks and Shares ISA for long-term investing, and a LISA for your house deposit – all in the same tax year if you want.
Your LISA stays open after age 50 but you can’t add more money or earn the bonus after that birthday. The pot continues growing through interest or investment returns, and you can access it penalty-free once you hit 60.
There’s a crucial 12-month waiting period before you can use your LISA for a first home purchase. Open it today and you’ll need to wait until at least next year before putting it towards a property. This trips up people who find their dream home quickly, so plan ahead.
What are the benefits of a Lifetime ISA?
The government bonus is the star attraction – 25% free money on everything you save. Where else can you get a guaranteed 25% return before any interest or investment growth? Save £4,000 and the government hands you £1,000. Do that for 10 years and you’ve received £10,000 in bonuses alone.
For first-time buyers, a LISA boosts your house deposit. Regular savings accounts might pay 4-5% interest if you’re lucky. With a LISA, you’re getting the 25% bonus on top of any interest. That means your deposit pot grows substantially faster than savings alone.
All growth is tax-free. Interest earned on cash LISAs and investment returns on Stocks and Shares LISAs don’t face income tax or capital gains tax.
You control the risk level. Nervous about the property market short-term? Stick with a Cash LISA and know exactly what you’ll have. Got 10+ years until you need it? A Stocks and Shares LISA could deliver higher returns based on historical performance, though past results don’t guarantee future gains.
Couples buying together can double up. Both partners can have their own LISA, contributing £4,000 each per year. That’s £8,000 combined contributions plus £2,000 in government bonuses annually.
LISAs work as pension supplements for the self-employed or anyone without a generous workplace scheme. You get the 25% boost now, the money grows tax-free, and you won’t pay tax when withdrawing after 60. Pensions offer tax relief too, but they’re taxed on withdrawal and you typically can’t touch them until 57 (rising to 58 in 2028).
The FSCS protects cash LISAs up to £120,000 per provider. Your money’s safe even if your LISA provider goes bust, as long as you’re within the compensation limit.
You can switch providers if you find a better interest rate or investment option. Transfer your LISA pot – including all accumulated bonuses – to a new provider who offers higher returns. Just make sure they accept transfers in first.
The Help to Buy ISA maxed out at £3,000 total bonus over its lifetime. A LISA offers unlimited bonuses – save the maximum every year from 18 to 50 and you could bank £32,000 in government cash. That’s ten times more potential free money.
For long-term Stocks and Shares LISA holders, compound growth builds exponential gains. Your £4,000 contribution becomes £5,000 with the bonus. If that grows 7% annually, next year it’s worth £5,350. The following year, that £5,350 grows by 7% too, and so on. After 30 years, your contributions could be worth multiples of what you put in.
Open a Lifetime ISA in under 5 minutes with award-winning provider HL.
What are the downsides of a Lifetime ISA?
The 25% withdrawal penalty is genuinely brutal if you need money for anything other than a first home or retirement. Take out £5,000 and you’ll pay a £1,250 charge, leaving you with £3,750 – that’s £250 less than if you’d only contributed £4,000 in the first place. You lose 6.25% of your own savings, not just the bonus.
The £450,000 property price cap has become a real problem. Set in 2017, this limit hasn’t budged despite house prices rocketing. Average UK house prices have jumped over 25% since LISAs launched. In London and the South East, loads of first-time buyers now find themselves priced out – the average first-time buyer property in London costs £445,000, dangerously close to the cap.
You can’t use a LISA for second homes, buy-to-let properties, or anything over £450,000. Your dream first home costs £475,000? Too bad – you’ll pay the 25% penalty to access your own savings. Property prices could rise above the cap while you’re saving, leaving you stuck.
That 12-month waiting period catches people out. Find your perfect first home eight months after opening your LISA? You can’t use it without paying the penalty. You’ll need to wait another four months or find extra cash elsewhere.
Stocks and Shares LISAs can lose value, especially short-term. The market dropped 25% in early 2020 during Covid panic. If you’d needed to buy your first home that March, your deposit pot would’ve been significantly smaller than your statements showed six months earlier.
Cash LISA interest rates might not beat inflation. Inflation running at 4% and your Cash LISA paying 4.5%? You’re barely gaining real purchasing power, even with the government bonus factored in. Over long periods, high inflation erodes the true value of cash savings.
You can’t access your money between ages 50 and 60 without penalty, even for emergencies. Lose your job, face a health crisis, or need cash urgently? The 25% charge still applies. Your LISA is locked away for a decade.
House purchase falls through? You can’t just take your money back. The government gives you 90 days to complete or return the funds to your LISA, otherwise the penalty applies.
What are the alternatives to a Lifetime ISA?
Regular Cash ISAs offer total flexibility without withdrawal penalties. You can access your money anytime for any reason. Current rates hit 5% AER in late 2024, though you miss out on the government bonus. If you’re unsure about buying a home or worried about needing emergency cash, Cash ISAs might make more sense.
The top Cash ISA rates often beat Cash LISA rates. Shop around and you’ll find easy-access accounts paying competitive interest with zero withdrawal restrictions or property price caps to worry about.
Stocks and Shares ISAs let you invest tax-free without the LISA’s £4,000 annual limit. You can put the full £20,000 annual ISA allowance into investments if you want. Perfect for people who’ve maxed out their LISA or who want to invest more aggressively for retirement.
Pensions can beat LISAs for retirement saving. Your employer contribution often beats the LISA’s 25% bonus. Many employers match your contributions up to 5-10% of salary. Someone earning £30,000 with a 5% match gets £1,500 free versus the LISA’s maximum £1,000 bonus.
You could also open a Self-Invested Personal Pension (SIPP) and benefit from tax relief with higher contributions possible each year.
Basic rate taxpayers get 25% tax relief on pension contributions automatically – the same as a LISA bonus. Higher-rate taxpayers can claim back 40% or 45%, beat the LISA bonus.
What could affect your Lifetime ISA returns?
Inflation steadily erodes cash purchasing power. UK inflation has averaged around 2-3% in recent years. Your Cash LISA needs to beat this to maintain real value. At 4.5% interest with 2.5% inflation, you’re gaining just 2% in real terms after accounting for rising prices.
Interest rate changes hit Cash LISAs hard since most use variable rates. The Bank of England base rate impacts what providers can offer. Rates climbed from 0.1% in late 2021 to 5.25% by August 2023, then dropped to 4.75% by late 2024. Your provider can cut rates anytime, slashing your returns overnight.
Stock market volatility means Stocks and Shares LISAs can swing wildly. Historical UK stock returns average 7-8% annually over 30+ years, but any single year could see +30% gains or -20% losses. The 2008 financial crisis saw markets drop 40%, while 2024 delivered solid 10%+ returns.
Property price increases in your target area could push homes above the £450,000 cap before you’re ready to buy. Average UK house prices rose 3-5% annually in most regions through the 2020s. In desirable areas like Cambridge, prices jumped 40% between 2017-2024. Your deposit’s growing but so are house prices.
Government policy changes remain possible. The Treasury Committee reviewed LISA rules in November 2024, considering whether to increase the property cap or reduce penalties. Future governments could alter bonus rates, contribution limits, or withdrawal rules. Nothing’s guaranteed permanent.
Provider stability matters for your peace of mind. Check your LISA provider’s financial health ratings. While FSCS protection covers up to £120,000, you don’t want the hassle of a provider going bust. Cash LISAs from solid building societies or backed by major banks carry lower risk.
Your contribution amount directly impacts your free government cash. Save £4,000 annually and you maximise the £1,000 bonus. Save £2,000 and you’re leaving £500 on the table. Not maxing out means thousands in lost bonuses over a decade.
When you start matters enormously. Opening a LISA at 18 versus 39 means 21 extra years of bonuses – that’s £21,000 more in government contributions before any interest or growth. Someone starting at 18 could accumulate over £130,000 by age 50 (assuming 4% returns), while someone starting at 39 hits maybe £75,000 with the same contributions.
Investment fund charges eat into Stocks and Shares LISA returns. Platform fees of 0.25-0.45% plus fund management charges of 0.15-1.00% annually compound over decades. A portfolio charging 1.5% total fees versus 0.5% fees could mean tens of thousands less after 30 years on the same contributions.
Tax changes could impact ISA treatment, though this seems unlikely given their popularity. No government wants to be seen taxing people’s savings. Still, there’s no legal guarantee the tax-free status remains forever.
Personal circumstances – job loss, relationship breakdown, health issues – could force early withdrawal. One in four LISA holders end up withdrawing early according to 2023 data, paying hefty penalties. Life rarely follows perfect plans.
Your time horizon changes everything. Got 15 years until you need the money? Stocks and Shares LISAs make sense as short-term volatility smooths out. Buying in two years? Stick with cash where you know exactly what you’ll have.
Forgotten contributions or missed years waste free bonus money. Set up a direct debit to max out your annual allowance automatically. Every year you skip is a £1,000 bonus lost forever.
Open a Lifetime ISA in under 5 minutes with award-winning provider HL.
Frequently Asked Questions
