How long do I have to hold a Lifetime ISA before buying a house?

You need to hold your Lifetime ISA for at least 12 months counted from the date of your first payment in, not from when the account was opened. Complete on the house any earlier and your conveyancer will refuse to release the funds — or release them as an unauthorised withdrawal subject to the 25% penalty. Transferring between providers doesn’t reset the clock; the original first-contribution date carries over.

Which date actually starts the 12-month clock?

The clock starts on the date of your first qualifying payment, which HMRC defines as the first sum of cash that reaches the LISA wrapper. This matters because:

Opening the account alone does not start the clock. You can apply for a LISA in March 2026 and if you fund it for the first time on 2 April 2026, your 12 months runs from 2 April 2026.
The tax year is irrelevant. People often assume the clock runs from 6 April — it doesn’t.
Transferring in an existing Cash ISA or Help to Buy ISA does count as a payment in, so your 12 months runs from the transfer-in date (unless your provider treats it as a “historic” subscription — always confirm with them in writing).

A worked example for 2026:

Amira opens a LISA with Moneybox on 20 July 2025.
She funds it for the first time on 14 August 2025 with £200.
She can complete on a qualifying first home any time from 14 August 2026 onwards.
Her solicitor submits the LISA funds-release request about two weeks before completion to her provider, who then pays into the solicitor’s client account within 30 days.

A piggy bank alongside a calendar showing the 12-month LISA holding period — Exchange too soon and your conveyancer will refuse to release LISA funds — the 12-month rule is policed at the withdrawal stage.

What if I transfer from one LISA provider to another?

Good news: the 12-month clock is preserved on transfer, if the transfer is a proper ISA transfer (provider to provider) and not a withdrawal followed by a new subscription. Every provider handles the admin differently — Moneybox, AJ Bell, Dodl, Tembo, Hargreaves Lansdown, Nude — but they all have to report the original first-contribution date in the ISA transfer history to HMRC.

If you accidentally close your LISA (withdrawing the funds and opening a brand-new one elsewhere), the clock restarts on the new account’s first contribution. You’d also pay the 25% penalty on the withdrawn amount. This is almost always a mistake — always request an ISA transfer instead.

When does the government bonus actually arrive?

The 25% bonus is paid monthly, applied to contributions made in the HMRC “return month” (roughly the 6th of one month to the 5th of the next). Most LISA holders see the bonus land 4-9 weeks after each contribution.

Payment in	Bonus arrives
10 April 2026	Late May to early June 2026
30 June 2026	Late July to early August 2026
2 March 2027	Late April 2027

For home-buying, timing matters. If you’re completing on 20 June 2026, don’t make a last-minute LISA deposit on 15 June expecting the bonus to arrive in time — it won’t. Make contributions at least 8 weeks before completion, or accept that the final bonus slice will be lost if you withdraw the pot early.

What actually happens at completion?

Your solicitor submits a model declaration to your LISA provider (the LISA investor declaration), confirming:

You are a first-time buyer.
The purchase price is £450,000 or less.
You are buying with a residential mortgage.
The 12-month holding rule is satisfied.

The provider then releases the funds (contributions plus bonus plus growth) directly to your solicitor within 30 days — most deliver within 10 working days. You never touch the money yourself.

If any of those four conditions fail, the solicitor will flag it to you before exchange. If you press ahead anyway, it becomes an unauthorised withdrawal and the 25% charge applies — see our guide to the 25% penalty.

Common misconception: “I can open a LISA now and use it in four months”

You can’t. There is no way to shortcut the 12-month rule for house purchases, even if you argue that you’ve held other ISAs for years. If your completion date is less than a year away and you don’t already have a LISA, it’s too late to use one for this purchase. Focus on boosting your cash deposit and the Freedom to Buy 95% LTV scheme instead.

This is information, not regulated advice. Check with your LISA provider before you commit to a completion date.