The 6.25% LISA early-exit net loss | PlainISA
Why a Lifetime ISA early withdrawal costs 6.25% of your own money: a 25% bonus on the contribution meets a 25% charge on the larger post-bonus balance.
Research period:
LISA early-exit net-loss progression by contribution
6.25% net loss after the current HMRC bonus and withdrawal charge
Bonus vs penalty mechanism
25% bonus on £4,000 = £1,000; charge applied to £5,000
Research question
Why does the Lifetime ISA's 25% early-withdrawal charge cost the saver more than just the 25% bonus they received? What is the exact net loss, and how does it scale with time inside the wrapper?
Methodology
We apply HMRC's stated rules from the gov.uk Lifetime ISA page and the HMRC Lifetime ISA Statistics publication to a worked-example calculation. The 25% bonus is applied to the saver's contribution; the 25% early-withdrawal charge is then applied to the post-bonus balance including any investment growth. The asymmetry between these two percentages, same nominal rate, applied to different bases, produces the net loss.
We model three scenarios: (a) zero investment growth between contribution and withdrawal, (b) 5% real annual growth over 10 years, (c) 7% real annual growth over 20 years. The 6.25% net-loss figure cited by HMRC and consumer-finance publications applies specifically to scenario (a). Scenarios (b) and (c) show how growth compounds the absolute loss while the percentage loss stays at 6.25% of original contribution capital.
Worked example, zero growth
Using the current £4,000 LISA contribution limit, HMRC pays a 25% bonus of £1,000. With no investment growth, the balance is £5,000.
For a non-qualifying withdrawal, the charge is 25% of that full £5,000 balance: £1,250. The amount left is £3,750.
Against the original £4,000 contribution, that is a £250 loss, or 6.25%. This is a worked arithmetic example of the statutory charge, not a recommendation about which wrapper to use.
Worked example, 5% annual growth, 10-year hold
Same £4,000 subscription on 6 April 2025, same £1,000 bonus, so the LISA opens with £5,000. Over 10 years at 5% real annual return (a reasonable assumption for a global equity index fund inside a S&S LISA), the balance compounds to approximately £8,144 by year 10.
On 1 January 2035 the saver withdraws the £8,144 for a non-qualifying purpose. HMRC applies the 25% charge to £8,144 = £2,036. The saver receives £8,144 - £2,036 = £6,108.
Original contribution: £4,000. Net received: £6,108. Net gain: £2,108, substantial, but the saver gave up roughly £6,000 of post-bonus, post-growth value to HMRC. Compare to a £4,000 contribution to a regular Stocks & Shares ISA over the same 10 years at 5%: balance would reach roughly £6,515 tax-free, with no penalty on withdrawal. The LISA is still ahead, but by less than the bonus value suggests.
Why the asymmetry exists
The 25% bonus is applied to contribution. The 25% charge is applied to the post-bonus balance including any growth. Algebraically: contribution C, post-bonus balance is 1.25C (zero growth), withdrawal charge is 0.25 × 1.25C = 0.3125C. Saver receives 1.25C - 0.3125C = 0.9375C. Net loss = 1 - 0.9375 = 0.0625 = 6.25% of original contribution.
HMRC documentation describes this asymmetry as intentional. The Lifetime ISA was designed to incentivise long-term saving toward first-home purchase or retirement; early withdrawal undermines that goal. The 6.25% penalty is calibrated to be material enough to discourage casual withdrawals but not so punitive as to permanently exclude the wrapper from emergency-fund consideration.
Sensitivity to investment growth
The 6.25% net-loss ratio applies to the original contribution capital, not the post-growth balance. As investment growth compounds, the absolute pound amount of "lost" value grows proportionally with the balance, but the percentage of the original capital lost stays at 6.25%. From the saver's perspective:
- Zero growth, 1-year hold: £4,000 contributed, £3,750 received, £250 net loss = 6.25%.
- 5% growth, 10-year hold: £4,000 contributed, £6,108 received, £2,108 net gain (vs £6,515 in regular S&S ISA = £407 worse).
- 7% growth, 20-year hold: £4,000 contributed, ~£14,500 received, ~£10,500 net gain (vs ~£15,500 in regular S&S ISA = ~£1,000 worse).
The longer the hold, the larger the cash amount subject to the withdrawal charge. Whether a LISA or another wrapper fits an individual's circumstances depends on the qualifying-use rules, time horizon, risk tolerance and other facts that this registry does not assess. Check the current HMRC guidance or an FCA-authorised adviser for personal advice.
Findings
The 6.25% LISA net-loss arithmetic is a permanent feature of the wrapper structure as defined in HMRC's Lifetime ISA Guidance and the Finance Act 2017 (as amended). The asymmetry between the bonus base (contribution) and the charge base (post-bonus balance) means early withdrawal always costs the saver more than the bonus value, regardless of holding period or investment growth.
The arithmetic establishes only the effect of the statutory bonus and withdrawal charge on this zero-growth example. It does not rank wrappers or determine suitability for a particular saver.
Sources and limitations
This derivation assumes the saver pays no Income Tax, Capital Gains Tax, or Dividend Tax on the LISA balance (true inside the wrapper). Comparisons to a regular S&S ISA likewise assume tax-free growth inside that wrapper. The 6.25% figure is invariant under all assumed growth rates; the comparison-to-regular-S&S-ISA delta varies with growth rate and holding period.
Primary source: gov.uk Lifetime ISA, the HMRC Lifetime ISA Guidance, and the Lifetime ISA section of the Finance Act 2017 as amended through the Finance Act 2024. HMRC Lifetime ISA Statistics for adoption and withdrawal data; Hargreaves Lansdown industry commentary for sensitivity-analysis cross-validation.
Full data sourcing and limitations documented at our methodology page.
Related research
Extended notes
ISAs are statutory wrappers with separate rules for Cash, Stocks & Shares, Lifetime, Innovative Finance and Junior accounts. The Personal Savings Allowance changed how taxable savings interest is treated outside an ISA; its thresholds and eligibility are set by HMRC. Source: HMRC Personal Savings Allowance guidance
This research records the published rules and historical series. It does not select a wrapper or investment for a reader: suitability depends on circumstances the registry does not assess. Check the current HMRC guidance or an FCA-authorised adviser for personal advice.
The ISA allowance has changed through successive rule updates, including the New ISA reforms. Use the current rules dataset for a present-day limit rather than treating a historical cap as current. Source: HMRC ISA Managers Guidance Notes