The Lifetime ISA's Days Are Numbered: What the 2028 Replacement Means for Your £450,000 Cap and 25% Penalty

On 23 June 2026, the Treasury opened a consultation that most people saving into a Lifetime ISA still haven't heard about: a plan to replace the entire product with something called the First-Time Buyer ISA, expected to land by April 2028. If that sounds like a rug-pull on the roughly 1.3 million people who currently hold one, it isn't — existing accounts stay open, contributions carry on as normal, and nobody is being forced to move anywhere. But the direction of travel tells you something useful about what's wrong with the current version, and it changes the calculation for anyone deciding right now whether to open one, keep paying into one, or start treating theirs differently.

The short version: two of the Lifetime ISA's defining features have aged badly enough, in the government's view, to justify starting again from scratch. A 25% exit charge that can eat into your own savings, and a £450,000 property cap frozen since the scheme launched in 2017, are the reasons behind a simpler product built only for first-time buyers. Understanding what's actually being proposed, and what it doesn't touch, matters more than the headline.

A Product the Treasury Wants to Retire, Not Delete

The Lifetime ISA has never had a huge take-up problem so much as a design problem. Anyone aged 18 to 39 can open one, contributions are allowed up until your 50th birthday, and the government adds a 25% bonus on whatever you pay in, up to £4,000 a year, which comes out of your overall £20,000 ISA allowance rather than sitting on top of it. Put in the full £4,000 and HMRC tops it up with £1,000, credited monthly rather than in one lump sum, so the bonus itself starts earning interest or investment growth almost immediately. Despite that, Tembo's own research suggests only around 17% of first-time buyers actually use one. LISA-using buyers purchase their first home roughly three years earlier on average than those who don't — 29.2 versus 32, by Tembo's figures — a gap that points to awareness rather than the product itself being unattractive. Treasury Committee evidence puts current holders at around 1.3 million, a fraction of the people who are eligible. The government's own framing of the reform leans on that mismatch: fewer people using a genuinely generous incentive than the design was meant to reach.

What's Actually Changing — and What Isn't, Yet

Start with what stays exactly the same, because that's the part people panic about unnecessarily.

If you already hold a Lifetime ISA, nothing changes for you today, tomorrow, or on the day the new product launches. You can keep contributing indefinitely, the 25% bonus keeps landing every month, and there is no cut-off date forcing you to close the account or switch products. What the consultation proposes for the new First-Time Buyer ISA is a different shape entirely: no upper age limit on who can open one, against the Lifetime ISA's hard 40th-birthday cutoff, no 25% exit charge for changing your mind, and a 25% bonus paid as a single lump sum at completion rather than monthly. The retirement use case disappears altogether — the replacement is explicitly first-time-buyer-only, so anyone using a LISA to save for age 60 rather than a house won't have anywhere to move that money into.

What isn't settled yet is more interesting than what is. The consultation has explicitly asked providers whether the £450,000 property cap should move, and it cites a report arguing the current limit doesn't stop support reaching the people who need it most — language that reads like ministers preparing the ground to leave the cap exactly where it is. Whether the 25% bonus rate survives the redesign, and whether the £4,000 annual limit does too, are both open questions the government says will be answered over the coming months. None of that is likely before the next Budget, and probably not before several after it.

The 25% Charge Nobody Reads Until They Need the Money

The charge hasn't always sat at 25%, and it's also exactly the mechanic the 2028 replacement is designed to remove. Withdraw money from a Lifetime ISA for any reason other than buying a first home worth £450,000 or less, turning 60, or a terminal diagnosis, and HMRC applies a 25% charge to the entire withdrawal — your own contributions included, not just the government's bonus. Say you've paid in the full £4,000 in a tax year and the bonus has added £1,000, leaving £5,000 sitting in the account. Need that money back for something else, or simply change your mind, and the 25% charge is calculated on the whole £5,000: a deduction of £1,250, leaving you with £3,750. You contributed £4,000 of your own money and walked away with £3,750 — a real loss of £250, or 6.25% of what you actually put in, on top of losing every penny of the bonus. Between 6 March 2020 and 5 April 2021, the Treasury cut the charge to 20% — effectively clawing back only the bonus — because the standard rate was trapping people who'd lost income during the pandemic and genuinely needed their own savings back. HMRC still collected £34 million in withdrawal charges that year despite the reduced rate, which tells you how many people were forced to break into a LISA regardless of the cost. The concession lapsed on schedule and the charge reverted to 25%, where it has stayed since — proof that this specific number is a policy choice the Treasury has moved before, not a fixed law.

A Cap That Was Set for a Different Housing Market

The £450,000 property price cap has not moved by a single pound since the Lifetime ISA launched in April 2017. It applies the same everywhere in the UK — Aberdeen, Aberystwyth, and Zone 2 London all use the identical ceiling, unlike the old Help to Buy ISA, which at least split London from everywhere else. That flat structure was always going to sit badly in a housing market where prices haven't moved uniformly, and both the London Assembly and the Treasury Select Committee have been told directly that the cap now excludes a meaningful share of first-time buyers in the capital and the commuter belt around it. If the property you're actually buying costs £450,001, you don't lose a proportion of your LISA funds — you can't put any of them towards that purchase at all, full stop; the cap is a cliff-edge, not a taper.

A few details about the cap trip people up specifically:

• It applies to the property, not to the buyer, so two partners each pooling their own Lifetime ISA into a joint purchase still face the same £450,000 ceiling as someone buying alone — two bonuses don't buy a higher limit.
• Twelve months' minimum account age applies before the funds can go towards a house, so opening one three months before exchanging contracts achieves nothing beyond the emergency-eligibility trick covered below.
• Inflation, region, and property type have never once adjusted the cap, and, according to the consultation documents, they may not do so under the replacement product either.

What This Means If You Already Hold One — or Are About to Turn 40

None of this is a reason to avoid a Lifetime ISA between now and 2028 — if anything, it's a reason to move faster. Keep contributing if you already have one: the monthly bonus and any interest or investment growth on it are locked in the moment they land, regardless of what happens to the product afterwards, and there's no clawback for reform. If you're 38 or 39 and haven't opened one yet, do it now with even a token amount, because the 40th-birthday cut-off for opening a new account is absolute — miss it and there is no version of this scheme, current or replacement, that you'll ever be eligible for again. Waiting for the First-Time Buyer ISA to arrive in 2028 on the assumption it will simply be a better deal is the wrong call for most people. It drops the retirement use case entirely, its bonus rate and contribution limit aren't confirmed yet, and two more years of monthly 25% bonuses compounding in a Lifetime ISA is real money you'd be giving up for a product that doesn't exist.

If you're saving toward a property anywhere near or above the £450,000 line — most of inner and outer London, and an expanding ring of commuter towns like St Albans, Guildford, and parts of Brighton — treat the Lifetime ISA as a bonus on the first £4,000 a year, not the vehicle for your whole deposit. Keep contributing enough to capture the full bonus, then build the rest of the deposit in a Stocks & Shares ISA or a plain savings account you can access without a 25% charge attached to it. That way, if the sale falls through, if you switch to a more expensive property, or if the eventual purchase clears the cap by even a few thousand pounds, you're not staring at a four-figure charge to get your own money back.

Cash or Stocks & Shares — Which Version to Actually Open

Which flavour of Lifetime ISA to choose depends almost entirely on your timeline, not your risk appetite in the abstract. A Cash Lifetime ISA — Moneybox, Skipton Building Society, and Tembo are among the main providers, with Tembo currently advertising 4.46% AER variable — makes sense if you expect to buy within the next three to five years and can't afford a market downturn hitting your deposit right before completion. A Stocks & Shares Lifetime ISA through AJ Bell, Hargreaves Lansdown, or Moneybox's investment option suits anyone whose purchase, or whose retirement date, is genuinely five years or further out, because the extra growth over that horizon usually outweighs a bad year or two along the way. Mixing the two by opening one type and transferring to the other later is allowed and, for most men in their twenties who don't yet know exactly when they'll buy, is the sensible default rather than a compromise.

Whatever you decide, don't let the 2028 headline talk you out of the 25% you can lock in this afternoon — the version of this scheme that exists right now, cap and all, is still one of the better trades HMRC offers anyone under 40.