The Lifetime ISA (LISA) offers a 25% bonus up to £1,000/year on max £4,000 annual contribution. Compare your potential returns:
Help to Buy ISA Calculator: Estimate Your Bonus and First-Home Deposit Updated Mar 2026
Calculate Your Help to Buy ISA Bonus Fast
See how much your old Help to Buy ISA may add to your first-home deposit. Free to use, quick to read, and built for simple planning.
Use Help to Buy ISA Calculator NowKey Takeaways
- Scheme status: You cannot open a new Help to Buy ISA in 2026, but old accounts can still matter.
- Monthly saving rule: Existing savers can usually pay in up to £200 a month after the first month.
- Bonus size: The government bonus is 25% of eligible savings, up to £3,000 per saver.
- Property cap: Homes must usually cost up to £250,000 outside London or £450,000 in London.
- Deadlines: You can normally keep saving until November 2029 and claim until November 2030.
What Is a Help to Buy ISA?
Help to Buy ISA calculator tools estimate how much bonus an old UK Help to Buy ISA may add to your first-home deposit. The scheme is closed to new savers, but people who opened an account before the deadline can still use it to plan monthly saving, bonus size, and home-buying timing.
Simple definition
A Help to Buy ISA is a legacy UK cash ISA for first-time buyers. It lets eligible old account holders save money and then claim a 25% government bonus when they buy a qualifying home through a solicitor or conveyancer.
This matters because many people still have an old account sitting in the background while they focus on rising house prices, mortgage rates, and deposit targets. A small account can still make a real difference. If you save £4,000, the bonus may add about £1,000. If you reach the top eligible saving level of £12,000, the bonus may reach £3,000 for one saver. If two eligible buyers both have old accounts, the combined boost may be much larger.
Official GOV.UK guidance says new accounts are no longer available, but existing savers can still pay in until November 2029 and claim the bonus until November 2030. That makes this a time-sensitive product. It is not enough to remember that you have one. You also need to know how much is already saved, how fast you are adding money, whether your target home fits the price cap, and how the bonus fits into the rest of your deposit plan.
If you are comparing routes, you may also want to review our ISA calculator, Lifetime ISA calculator, and savings calculator. Those tools help when your deposit plan is larger than one old ISA account.
How to Use This Help to Buy ISA Calculator
This section answers a common search: how to use a Help to Buy ISA calculator. The goal is simple. You want a quick estimate of your balance, likely bonus, and total deposit support without reading long rule pages first.
- Step 1: Check your account status — Make sure you already opened a Help to Buy ISA before the scheme closed to new savers.
- Step 2: Enter your balance — Add your current ISA balance so the calculator can estimate your bonus and deposit total.
- Step 3: Add monthly savings — Use a monthly amount up to the scheme limit so your plan stays realistic.
- Step 4: Set your interest rate — Include the account rate if you want a fuller view of how your balance may grow.
- Step 5: Choose your target date — Pick the month or year when you hope to buy so you can see how much time remains.
- Step 6: Review the bonus estimate — Compare your projected balance with the minimum and maximum bonus rules before you rely on it.
- Step 7: Check the property limit — Confirm whether your planned home is inside the London or outside London price cap.
- Step 8: Use the result with your deposit plan — Combine your bonus estimate with other savings so you know your full deposit target.
Quick planning tip
Use the calculator twice. First, run a simple plan with no interest. Then run a second plan with your current ISA rate. This shows the gap between a basic deposit path and a more complete estimate.
Many users search for a free Help to Buy ISA calculator because they want three fast answers: how much bonus they may get, whether they are close to the top bonus, and whether they need another savings tool on top. This is why the best way to use the calculator is with your wider deposit plan in mind. You may also want to compare your result with a compound interest calculator and a UK mortgage calculator.
Help to Buy ISA Formula Explained
The Help to Buy ISA formula is simple enough for manual planning. Most people want a quick bonus estimate, not a hard-to-read finance model. A clean estimate helps you understand how your savings may turn into buying power.
Basic formula
Estimated government bonus = Eligible savings × 25%, capped at £3,000 Estimated total deposit support = Eligible savings + Estimated bonusThe minimum bonus usually starts when eligible savings reach £1,600. The top bonus usually appears when eligible savings reach £12,000.
Worked example with real numbers
If your eligible Help to Buy ISA savings are £8,000, a simple bonus estimate is £2,000. That would give you about £10,000 in combined deposit support from the account and bonus before you add any other deposit money from normal savings.
If you already have £10,000 in a separate savings pot, your wider deposit picture may look more like £20,000 total. That is why the Help to Buy ISA bonus matters, but it should not be your only deposit plan.
In real life, your final result can depend on the claim process, account records, timing, and the home purchase rules. Use the calculator for planning, then confirm the claim path with your provider and conveyancer. If you are estimating the full buying cost, also review our stamp duty calculator because tax and fees can change how much deposit cash you really need.
Types of Help to Buy ISA Users
There is only one Help to Buy ISA product, but users do not all need the same plan. Some people are close to buying now. Others still have years left. That changes what matters most: monthly saving, transfer choices, deadlines, or joint-buyer strategy.
| User type | What it means | Best next move |
|---|---|---|
| Legacy saver | You opened the account before November 2019 and still save each month. | Best fit if you already built the habit and want to keep the old bonus route alive. |
| Paused saver | You have an old account but are not paying in right now. | Useful if you may buy later and want to restart contributions before the scheme end date. |
| Joint buyer | You plan to buy with another first-time buyer who also has an eligible account. | A joint purchase may double the bonus support because each saver can have their own claim. |
| Transfer thinker | You are comparing your old account with a Lifetime ISA. | This path matters when you want to weigh flexibility, bonus timing, and home price limits. |
| Near-completion buyer | You already have most of your balance and want to claim soon. | This is where deadline checks, solicitor timing, and price caps matter most. |
The strongest route for many old savers is simple: keep the account active if it still suits your plan, stay within the payment limits, and keep the property cap in view. If your home goal has changed a lot, compare the old account with a Lifetime ISA rather than assuming the older product is still the best fit.
Help to Buy ISA vs Lifetime ISA: Key Differences
Help to Buy ISA vs Lifetime ISA is one of the biggest search themes in this topic. The short answer is that the Help to Buy ISA mainly helps legacy savers, while the Lifetime ISA is the main live bonus-based savings route for many newer first-time buyers.
| Feature | Help to Buy ISA | Lifetime ISA | Normal Cash ISA |
|---|---|---|---|
| Status | Closed to new savers | Still open to new savers aged 18 to 39 | Open to many savers |
| Main bonus | 25% at home purchase | 25% added during saving | No government home bonus |
| Annual saving pattern | First month up to £1,200, then up to £200 a month | Up to £4,000 per tax year | Uses the wider ISA allowance rules |
| Property cap | £250,000 outside London, £450,000 in London | £450,000 across the UK | No home-buying bonus rule |
| Best for | Existing legacy savers | New first-time buyers who qualify | Flexible tax-free saving without a home bonus |
GOV.UK says the Lifetime ISA lets eligible savers put in up to £4,000 a year, counts toward the wider £20,000 ISA allowance, and can be used for a first home or later life. That makes it more flexible for many new buyers. The Help to Buy ISA still matters if you already have one, but it is no longer the default starting point for someone beginning from zero in 2026.
Best simple rule
If you already have a Help to Buy ISA, calculate it before you ignore it. If you do not have one, you usually need to compare a Lifetime ISA, a normal ISA, and standard savings instead.
Help to Buy ISA Bonus Table
The table below is built for quick answer searches like Help to Buy ISA bonus table, Help to Buy ISA maximum bonus, and how much bonus do I get on £4,000. It shows the simple planning math most users want first.
| Eligible savings | Estimated bonus | Estimated total | What it shows |
|---|---|---|---|
| £1,600 | £400 | £2,000 | Meets the minimum bonus level |
| £4,000 | £1,000 | £5,000 | Simple mid-point target |
| £8,000 | £2,000 | £10,000 | Useful for a stronger deposit plan |
| £12,000 | £3,000 | £15,000 | Reaches the top bonus level |
| 2 savers at £12,000 each | £6,000 combined | £30,000 combined | Strong joint-buyer example |
For many buyers, this table is the fastest way to see whether the account is still worth pushing. If you are far below £12,000, there may still be value in keeping monthly saving steady. If you are already near the cap, the bigger question becomes how to build the rest of your deposit and how to avoid legal or timing mistakes.
Help to Buy ISA Rules by Country
The Help to Buy ISA is a UK product, but many people still search for similar first-home savings options in other countries. The simple truth is that other markets use different tools. Some use tax relief, some use normal savings, and some rely on local housing help rather than one national ISA-style cash bonus.
United Kingdom
The UK is the only market in this review with the Help to Buy ISA itself. GOV.UK says you can no longer open one, but old account holders can still save into eligible accounts until November 2029 and claim until November 2030. Homes must usually be under the price cap, and the property must be the only home you own and the home you plan to live in.
The UK also gives newer savers another main route: the Lifetime ISA. That is why the best UK strategy in 2026 is not to ask only how much bonus you may get from an old Help to Buy ISA. You should also ask whether your full deposit plan works after mortgage rules, stamp duty, fees, and home price limits are all counted.
United States
We did not find a direct national Help to Buy ISA style cash-bonus savings account in this review. Buyers in the United States often rely on normal savings, local or state help, lender programs, and tax rules such as the home sale exclusion rules on the IRS side. That means the planning path is more local and less product-led than the UK Help to Buy ISA route.
Canada
The closest clear official match in this review is Canada's First Home Savings Account. CRA says the FHSA is a registered plan for first-time buyers, allows tax-free growth, and starts with first-year participation room of $8,000. That makes it a more active current product than the UK Help to Buy ISA, which is now only for legacy savers.
Australia
Australia has first-home support routes, but this review did not confirm one direct cash ISA-style bonus product that mirrors the Help to Buy ISA structure. Buyers usually need to compare super-based support, state help, and normal deposit saving rather than depend on a single old-style cash ISA bonus.
India
We did not confirm one national bonus savings account that works like the Help to Buy ISA. In practice, many buyers focus on savings discipline, loan readiness, and local housing support instead. For Indian users, the planning lesson is simple: build the deposit path first, then check local rules before you count on extra help.
| Country | Closest product | Simple view | Who should check it |
|---|---|---|---|
| United Kingdom | Help to Buy ISA for legacy savers; Lifetime ISA for newer savers | Help to Buy ISA still gives a 25% bonus for eligible old accounts. Lifetime ISA stays open to new savers. | Legacy Help to Buy ISA savers, new first-time buyers comparing products |
| United States | No direct national Help to Buy ISA style cash-bonus account found in this review | Buyers often rely on normal savings, state help, and mortgage planning instead of one national ISA-style bonus scheme. | Buyers who need local state and lender research |
| Canada | First Home Savings Account (FHSA) | CRA says FHSA is a tax-free first-home plan with deductible contributions and first-year room of $8,000. | First-time buyers who want tax relief while saving |
| Australia | First-home saving often links to super or state schemes | The route is not a direct Help to Buy ISA match, so buyers usually need local rule checks before making a plan. | Buyers comparing super-based or state-based support |
| India | No direct national Help to Buy ISA style bonus cash account found in this review | Many buyers focus on bank savings, loan planning, and local housing schemes instead of one national ISA-style product. | Buyers building a deposit through normal savings and loan eligibility |
Common Help to Buy ISA Mistakes to Avoid
Most Help to Buy ISA mistakes are not math mistakes. They are timing mistakes, rule mistakes, or planning mistakes. That is good news because they are easier to fix if you spot them early.
| Mistake | Possible cost | How to avoid it |
|---|---|---|
| Assuming you can still open one | Lost time while saving in the wrong product | Check scheme status first and compare a Lifetime ISA if you need a live option. |
| Forgetting the property price cap | Bonus claim may fail on an over-limit purchase | Check the price cap early when you shortlist homes. |
| Saving too little to reach the minimum | No bonus if eligible savings stay below £1,600 | Set a minimum path before you count the bonus in your deposit plan. |
| Ignoring the deadline to keep paying in | Lower final balance and smaller bonus | Build a monthly plan that ends before November 2029. |
| Treating the estimate as guaranteed cash | Deposit shortfall at completion | Use the calculator as a planning tool, then confirm with your provider and conveyancer. |
| Not checking if both buyers can claim | Missed joint-buyer advantage | If both people are first-time buyers, review both accounts together. |
| Leaving all planning to the last minute | Bonus claim delays or weak paperwork | Talk to your solicitor before you exchange contracts. |
Big warning
If your planned purchase price is over the scheme limit, the bonus may not be available even if you saved for years. Always test your deposit plan against the type and price of home you actually want to buy.
Tax and Legal Considerations
A Help to Buy ISA is part of the ISA world, so the tax side is one of its biggest advantages. GOV.UK says you do not pay tax on interest, income, or capital gains inside an ISA. That makes the account useful even before you get to the home-buying bonus question.
On the legal side, the bonus is not something you normally claim like cashback on your own. Your solicitor or conveyancer usually handles the claim during the purchase process. The home must be your only home, and it must be a home you plan to live in. If your case is not simple, ask for legal advice early rather than just before completion.
First-time buyer tax help can also change your full costs. GOV.UK says Stamp Duty Land Tax rules can include first-time buyer relief in some cases. So even if your Help to Buy ISA bonus looks strong, you still need to estimate taxes, fees, and mortgage costs. That is why this topic works best as a full plan, not as one number on one screen.
Help to Buy ISA Strategies by Life Stage
Life stage changes how you use an old Help to Buy ISA. The product is the same, but your buying speed, risk level, and deposit gap are not.
In your 20s
If you already have a Help to Buy ISA, your best move may be steady saving and simple tracking. Focus on building the habit, learning local price caps, and checking whether a house affordability calculator shows a realistic path.
In your 30s
Many buyers in their 30s need speed. If your old account is below the top saving level, work out whether monthly saving plus other cash savings can close the gap in time. If not, compare the old account with a wider ISA and deposit plan.
In your 40s
The key question is often timing. You may already have enough income for a mortgage, but the deposit may still be weak. At this stage, the Help to Buy ISA is usually one part of a wider cash plan, not the main answer.
In your 50s
Buying later can still happen, but the bonus rules, the home price cap, and your mortgage options all need a careful review. Keep your plan simple and check every rule before you treat the bonus as certain money.
In your 60s and beyond
Some buyers in later life still support a family move or late first purchase, but the Help to Buy ISA will not fit every case. If your situation is complex, speak with a mortgage broker, solicitor, or financial adviser before taking action.
Simple life-stage rule
The older and more complex your buying plan gets, the less useful it is to look at the Help to Buy ISA in isolation. Pair it with mortgage, tax, and legal checks.
Real Help to Buy ISA Scenarios
Worked examples are one of the easiest ways to understand this topic. They also help you test if the calculator result feels realistic when matched with real saving numbers.
| Scenario | Eligible savings | Estimated bonus | Estimated deposit support | Why it matters |
|---|---|---|---|---|
| Solo saver | £4,800 saved | £1,200 estimated bonus | £6,000 total toward deposit | Useful when you are early in your first-home plan. |
| Steady long saver | £9,600 saved | £2,400 estimated bonus | £12,000 total toward deposit | A common target for buyers who save for several years. |
| Max bonus saver | £12,000 saved | £3,000 estimated bonus | £15,000 total toward deposit | Reaches the top bonus level for one saver. |
| Buying as a couple | £24,000 saved together | £6,000 estimated bonus | £30,000 total toward deposit | Shows why two eligible savers can build more deposit power. |
Scenario detail: buyer outside London
A buyer has £8,000 in an old Help to Buy ISA and £7,500 in other cash savings. Their estimated ISA bonus is £2,000, so the combined deposit pool may reach about £17,500. If the target home is still inside the price cap, the old account is doing useful work. If the target home is over the cap, that same buyer may need a different strategy fast.
Scenario detail: couple buying together
Each buyer has £12,000 in eligible savings. Each may qualify for up to a £3,000 bonus, so together they may add about £6,000 to their deposit. This is one of the strongest Help to Buy ISA use cases because the bonus scales across two eligible buyers.
Frequently Asked Questions
About This Calculator
This Help to Buy ISA calculator article is built for simple planning. It uses the main scheme figures from the calculator config, cross-checks them with official public guidance, and keeps the math readable. We focus on bonus size, deadlines, price caps, and how the result fits into a real first-home deposit plan.
Methodology is simple by design. The calculator starts with your eligible savings, applies a 25% bonus estimate, respects the minimum and maximum bonus thresholds, and then shows how that estimated support may help your deposit. It does not replace legal, tax, or mortgage advice.
For wider planning, see our UK mortgage calculator, stamp duty calculator, and Lifetime ISA calculator.
Trusted Resources
Disclaimer
Important: This article and calculator are for education only. They give planning estimates, not legal, tax, or financial advice. Rules can change, provider terms can differ, and your result may depend on your full buying case. Speak with a licensed adviser, mortgage professional, solicitor, or conveyancer if you need advice for a real purchase.
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