You choose between a Lifetime ISA and a Help to Buy ISA based on your age, your home's expected price, and your buying timeline. The Lifetime ISA offers a larger annual limit and a higher property price cap of £450,000, while the Help to Buy ISA provides more flexible withdrawal rules for those buying sooner.
Deciding where to put your house deposit savings is a significant part of personal wealth management. Both accounts offer a 25% government bonus, but the way you earn and claim that money differs. Since the Help to Buy ISA closed to new applicants in 2019, this choice only applies if you already have an active Help to Buy account and are considering transferring to a Lifetime ISA (LISA).
What are the main differences between the two accounts?
The main differences lie in the maximum contribution limits, the property price caps, and when the government bonus is paid into the account. A Lifetime ISA allows you to save £4,000 per year with the bonus added monthly, whereas a Help to Buy ISA limits monthly deposits to £200 with the bonus paid only at completion.
The Help to Buy ISA was designed as a liquid savings tool. You can withdraw your own contributions at any time without a penalty. However, you only receive the 25% bonus when your solicitor applies for it during the property purchase process. The property you buy must cost £250,000 or less, unless it is in London where the cap is £450,000.
The Lifetime ISA is more restrictive but potentially more rewarding. You must be aged 18 to 39 to open one. You can save up to £4,000 each tax year, and the government adds a 25% bonus (up to £1,000) every time you contribute. The property price cap is £450,000 nationwide. Crucially, if you withdraw money for any reason other than buying a first home or reaching age 60, you pay a 25% government penalty, which can result in getting back less than you put in.
| Feature | Help to Buy ISA | Lifetime ISA (LISA) |
|---|---|---|
| Annual Deposit Limit | £2,400 (£200 per month) | £4,000 (no monthly limit) |
| Maximum Annual Bonus | £600 | £1,000 |
| Max Property Value | £250k (£450k in London) | £450,000 (Nationwide) |
| When is bonus paid? | At property completion | Monthly (usually within 4-9 weeks) |
| Withdrawal Penalty | None (but lose bonus) | 25% of total value |
Why should you switch to a Lifetime ISA?
You should consider switching to a Lifetime ISA if you intend to buy a home costing more than £250,000 outside of London or if you want to save more than £200 per month. Because the LISA bonus is paid monthly, you also earn interest on the bonus itself, which creates a slight compounding advantage over several years.
For many, the £250,000 limit on the Help to Buy ISA is the deciding factor. House prices in many parts of the UK have risen significantly since the scheme was launched. If you find a home for £260,000 in Manchester or Birmingham, a Help to Buy ISA bonus cannot be claimed. In contrast, the LISA allows you to buy that same home and still receive the full 25% boost.
Another reason to switch is the speed of accumulation. If you have a lump sum ready, you can put £4,000 into a LISA on the last day of the tax year and another £4,000 on the first day of the new tax year. In just two days, you have secured £2,000 in government bonuses. With a Help to Buy ISA, reaching that same level of savings would take 40 months of consistent £200 deposits.
You can find more practical tips on managing your savings in our wealth knowledge base. Understanding these rules helps avoid the common mistake of saving into an account that won't actually pay out when you find your dream home.
Is there a downside to the Lifetime ISA?
The primary downside is the 25% withdrawal penalty if you use the money for anything other than a qualifying house purchase or retirement. This penalty is designed to reclaim the government bonus, but because it applies to the total account value (your money plus the bonus), it effectively takes 6.25% of your original contribution as well.
For example, if you save £1,000, the government adds £250, giving you £1,250. If you withdraw that £1,250 for an emergency, the 25% penalty is £312.50. You are left with £937.50. This makes the LISA a poor choice for an emergency fund. You should only use it for money you are certain will go toward a home or your long-term personal development goals involving retirement.
Additionally, a Lifetime ISA must be open for at least 12 months before you can use it to buy a home. If you plan to buy in the next few months, sticking with a Help to Buy ISA is safer. The "clock" starts from the date of your first payment into the LISA, not the date you opened the account or transferred from another ISA.
- Age 18-39: You must be in this age bracket to open a LISA.
- 12-Month Rule: The LISA must be open for a full year before the bonus can be used for a home.
- Property Price: The home must cost £450,000 or less.
- First-time buyer: You cannot have owned property anywhere in the world previously.
How do you transfer a Help to Buy ISA to a Lifetime ISA?
You transfer by opening a new Lifetime ISA and requesting a formal transfer from your provider, rather than withdrawing the cash manually. This ensures the funds retain their tax-free status and move directly into the new wrapper, though the amount moved will count toward your £4,000 annual LISA limit.
If you have £10,000 in a Help to Buy ISA, you cannot move it all at once. You can only move £4,000 per tax year. This means it could take three tax years to fully migrate a large Help to Buy balance. Many people choose to leave their existing Help to Buy ISA open while starting a new LISA, but you can only use the bonus from one of them to buy your home. You can learn more about managing multiple accounts in our how-to guides.
When you use a LISA for a house, your solicitor handles the paperwork. They will request the funds from your ISA provider. The money is then sent directly to the solicitor to be used for the completion of the purchase. This process is relatively standard, but it is wise to inform your conveyancer early on that you are using a Lifetime ISA.
Frequently asked questions
Can I use both a Help to Buy ISA and a Lifetime ISA to buy a house?
No, you can only use the government bonus from one of these accounts to purchase your first home. If you have both, you will have to choose which bonus to claim. You can still use the money from the other account toward your purchase, but you will not receive the 25% bonus on those specific funds, and with a LISA, you would face the 25% withdrawal penalty.
What happens to my LISA if I decide not to buy a house?
If you decide not to buy a home, you can keep the money in the account until you reach age 60, at which point you can withdraw it all tax-free, including the bonuses. If you need the money before age 60 and are not buying a home, you will pay the 25% government withdrawal penalty. This effectively reduces your original savings, so it is important to have a separate emergency fund.
Can two people buying together both use their ISA bonuses?
Yes, if both people are first-time buyers, they can each use their own ISA to buy the same property. This means a couple could potentially receive up to £2,000 in government bonuses every year if they both max out their Lifetime ISAs. This remains true whether you both have LISAs, both have Help to Buy ISAs, or one person has each type.
Does the Lifetime ISA affect my ability to save in a standard Cash ISA?
The £4,000 you put into a Lifetime ISA counts toward your total annual ISA limit, which is currently £20,000. If you fill your LISA with £4,000, you have £16,000 of your allowance remaining to put into a Cash ISA, Stocks and Shares ISA, or Innovative Finance ISA. You must manage these limits carefully to avoid over-contributing during the tax year.