The Lifetime ISA is the most generous ISA the government offers, and the most punishing if you get it wrong. It will hand you up to £1,000 of free money a year. It will also take a chunk of your own money back if you withdraw for the wrong reason. Both of those are true at the same time, and the gap between them is just knowing the rules.

First, the basics. A Lifetime ISA, the ISA standing for Individual Savings Account, is a tax-free account built to help you save for one of two big goals: your first home, or later life. Like every ISA, whatever it earns is free of tax, and the government adds a bonus on top.

Here is how the Lifetime ISA works: who can open one, the 25% bonus, what you can use it for, the penalty that catches people out, and the big change coming in 2028.

The headline: a 25% government bonus

You can pay up to £4,000 a year into a Lifetime ISA, and the government adds a 25% bonus on top, so up to £1,000 of free money each year. At the time of writing those figures are set by the government and can change, so check gov.uk. That £4,000 counts as part of your overall £20,000 ISA allowance, not on top of it.

Who can open one, and the age trap
You can only open a Lifetime ISA between the ages of 18 and 39. Once you have one, you can keep paying in, and keep getting the bonus, until you turn 50. But if you do not open one before your 40th birthday, the door closes for good. That age window is the single most important thing to know if a Lifetime ISA might suit you.

What you can use it for without penalty
There are two clean ways to use the money. The first is buying your first home, as long as it costs £450,000 or less. The second is taking it out from age 60 onwards, for later life. Use it for either of those and the bonus is yours to keep.

The catch that costs people money
Withdraw for any other reason, and you pay a 25% government charge on the amount you take out. Because that 25% applies to your money and the bonus together, it does not just cancel the bonus, it takes a slice of your own savings too, around 6.25% of what you put in. Put simply, you can get back less than you paid in. There is also a 12-month rule, where withdrawals in the first year of your first payment are charged. Treat a Lifetime ISA as money you are committing to a first home or to age 60, not as a flexible pot.

Cash or investments
Like other ISAs, a Lifetime ISA comes in a cash version and a stocks and shares version. If you choose the invested version, the value can rise and fall like any investment. For a house deposit you might need within a few years, that risk matters, so many people use cash for short timelines and investments for longer ones.

The big change: the Lifetime ISA is being replaced

In the November 2025 Budget the government confirmed that the Lifetime ISA will be replaced by a new First-Time Buyer ISA from April 2028. Existing holders can keep contributing under the current rules, so nothing is being taken away from anyone who already has one. The replacement is expected to focus on home buying, may scrap the withdrawal penalty, and will be shaped by a consultation in 2026. If a Lifetime ISA suits your plans, you can still open one now and benefit from the current rules. As with everything here, the detail can change, so check gov.uk.

How much free money can I get?
Up to £1,000 a year, a 25% bonus on contributions of up to £4,000, at the time of writing.

Can I use it for any house?
It is for a first home costing £450,000 or less. Above that cap, or for a property you are not buying as a first-time buyer, the penalty applies.

What happens if I withdraw for something else?
You pay a 25% charge, which takes back the bonus and around 6.25% of your own money, so you can get back less than you put in.

Is it being scrapped?
It is being replaced by a new First-Time Buyer ISA from April 2028. Existing holders can keep paying in under the current rules.