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Help to Buy ISA and LISA with Specialist Lenders

Updated 2026-03-248 min readFact-checked
UK mortgage and property guidance

You've been diligently saving into a Help to Buy ISA or Lifetime ISA, building up a government bonus to boost your deposit. But now you need a specialist lender because of adverse credit or complex circumstances. Will they accept your ISA? Can you still claim the bonus? The short answer is yes — but the details matter.

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Help to Buy ISA: The Basics

The Help to Buy ISA closed to new accounts in November 2019, but existing holders can continue to save and claim the bonus until November 2029. Key features:

  • Save up to £200/month (plus an initial £1,000 deposit)
  • Government adds 25% bonus on your savings
  • Minimum savings of £1,600 to get any bonus (£400 bonus)
  • Maximum bonus of £3,000 (on £12,000 of savings)
  • Property must cost no more than £250,000 (£450,000 in London)
  • Must be a first-time buyer

The Crucial Timing Detail

The Help to Buy ISA bonus is not available at exchange — it's paid to your solicitor between exchange and completion. This means it cannot count towards your deposit at exchange. If your lender needs the full deposit at exchange (most do), you need enough money without the bonus at that point.

This catches many people out. The bonus effectively arrives after the critical moment.

Don't count the HTB ISA bonus as your exchange deposit

Your deposit for exchange must come from your own funds. The ISA bonus arrives later, between exchange and completion. If you're relying on the bonus to meet the minimum deposit, you'll fall short at the wrong moment. Plan accordingly.

Lifetime ISA (LISA): The Basics

The LISA is the successor to the Help to Buy ISA and remains open:

  • Save up to £4,000 per year
  • Government adds 25% bonus — up to £1,000 per year
  • Available to people aged 18-39 (you can keep saving until 50)
  • Property must cost no more than £450,000
  • Must be a first-time buyer (for the property bonus)
  • Account must be open for at least 12 months before using the bonus

The LISA Advantage

Unlike the Help to Buy ISA, the LISA bonus is paid into your account shortly after each contribution. This means the bonus money is available for your deposit at exchange — it's sitting in your account ready to go.

The LISA Penalty

If you withdraw LISA funds for any purpose other than buying your first home or retirement (after age 60), you face a 25% penalty on the withdrawal. Because the penalty is 25% of the total amount (including the bonus), you actually lose money:

  • Save £1,000, receive £250 bonus = £1,250
  • Withdraw: £1,250 × 25% penalty = £312.50 penalty
  • You receive: £937.50 — less than you put in

You can hold both (sort of)

You can have both a Help to Buy ISA and a LISA, but you can only use the bonus from ONE of them for a property purchase. If you have both, compare which gives the larger bonus and use that one. You can still withdraw the savings (without the bonus) from the other.

Using ISA Bonuses with Specialist Lenders

Do Specialist Lenders Accept ISA/LISA Funds?

Yes — virtually all specialist lenders accept both Help to Buy ISA and LISA funds as part of your deposit. The savings are legitimate, the bonuses are government-backed, and the paper trail is clear. This includes:

  • Kensington Mortgages
  • Pepper Money
  • Bluestone
  • Aldermore
  • Vida Homeloans
  • Most building societies with specialist criteria

Minimum Deposit Considerations

Specialist lenders typically require larger deposits than mainstream banks (10-25% vs 5%). Your ISA bonus helps, but you'll likely need additional savings:

Example: Property at £200,000, specialist lender requiring 15% deposit

  • Deposit needed: £30,000
  • Your LISA savings + bonus: £8,000
  • Additional savings needed: £22,000

The ISA/LISA takes the edge off but probably won't cover the full deposit requirement.

Documentation

Specialist lenders will want to see:

  • ISA/LISA statements showing the balance and bonus
  • Evidence the account has been open for 12+ months (LISA requirement)
  • Confirmation you're a first-time buyer
  • Standard deposit source verification

The Process: Step by Step

With a LISA

  1. Ensure your LISA has been open for at least 12 months
  2. Instruct your solicitor and conveyancer
  3. When ready to exchange, request a withdrawal from your LISA provider for the property purchase
  4. Your LISA provider sends the funds (including bonus) to your conveyancer
  5. The funds form part of your deposit at exchange

With a Help to Buy ISA

  1. When your offer is accepted, ask your ISA provider for a closing statement
  2. Close the ISA and move the savings to an accessible account
  3. Use your savings (WITHOUT the bonus) for the exchange deposit
  4. Your solicitor applies for the bonus from the HTB ISA scheme administrator
  5. The bonus arrives before completion and contributes to the final payment

Common Problems and Solutions

Problem: LISA Not Open Long Enough

The 12-month rule is strict. If you opened your LISA less than 12 months ago, you can't use the bonus yet. Solution: wait until the 12 months is up, or use the savings without the bonus (but you'll face the penalty).

Problem: Property Price Exceeds the Limit

Both schemes cap the property price at £450,000 (LISA) or £250,000/£450,000 (HTB ISA). If your property exceeds this, you can't use the bonus. You can still withdraw your savings without the bonus, but you'll face the LISA penalty.

Problem: Not Actually a First-Time Buyer

If you've owned property before — anywhere in the world — you don't qualify for the first-time buyer bonus. This applies even if you no longer own that property. Be honest about this; false claims could constitute fraud.

Problem: Your Application Takes Too Long

HTB ISA bonuses must be claimed within a specific timeframe. If your mortgage application drags on (common with specialist lenders, which use manual underwriting), make sure your solicitor is aware of the HTB ISA timeline.

Maximising Your Bonus

If you're saving towards a specialist lender deposit:

  1. Open a LISA now if you haven't already — the 12-month clock starts ticking
  2. Max out contributions — £4,000/year to the LISA for the full £1,000 bonus
  3. If you have an HTB ISA, compare bonuses — use whichever gives you more
  4. Save additional funds separately — ISA bonuses are great but won't cover a specialist lender deposit alone
  5. Don't withdraw early — the LISA penalty is brutal

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The Savings Matter More Than the Bonus

While the government bonus is a welcome boost, the real value is in the discipline of saving regularly. The savings habits you build while filling your ISA are exactly the habits that make you a more attractive mortgage applicant and a more sustainable homeowner. Keep saving, keep building, and when you're ready — the bonus will be there.

This is educational content, not financial advice. Your situation is unique — speak to a qualified mortgage broker before making any decisions.

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