How to Transfer Your ISA Without Losing Tax-Free Status

One rule matters more than everything else combined: use your provider's official ISA transfer form. Withdrawing money from an ISA and depositing it elsewhere means that money permanently loses its tax-free status. No exceptions, no appeals, no way to reverse it.

Beyond that non-negotiable, the rules are straightforward:

• Transfer all or part of your balance at any time, to any eligible provider
• Switch ISA type during a transfer — cash ISA to stocks and shares ISA, or vice versa
• Current-year contributions must transfer in full; previous years' money can be split across providers
• No limit on frequency — transfer as often as you want, to as many providers as you need

Lifetime ISAs are the exception. Transfer a LISA to a non-LISA and you'll face the 25% government withdrawal charge. LISA-to-LISA transfers are fine. Junior ISAs follow separate rules requiring a parent or guardian.

The £20,000 ISA allowance for 2025/26 resets on 6 April 2026. Transferring doesn't count as a new subscription — your allowance stays intact. That means decades of accumulated ISA savings can move between providers without using a penny of this year's allowance.

For savers whose total savings income sits below the Personal Savings Allowance — £1,000 for basic-rate taxpayers (income up to £50,270), £500 for higher-rate — an ISA transfer might seem pointless. But allowances shrink fast with pay rises, and ISA protection is permanent. Our analysis of when a cash ISA beats a standard savings account walks through the maths.

Transfer speed depends on what you're moving:

• Cash ISA to cash ISA: maximum 15 working days (roughly 3 calendar weeks)
• All other transfers (stocks and shares, innovative finance, Lifetime ISA): up to 30 calendar days

These are hard deadlines set by HMRC's ISA regulations, not guidelines. Many providers beat them — some cash ISA transfers settle in 5–7 working days — but volumes spike around tax year end and delays become common.

With the 2025/26 tax year ending on 5 April 2026, the safe window for starting a cash ISA transfer has already passed for guaranteed pre-April completion. Stocks and shares transfers needed to start by early March.

That said: missing the 5 April deadline doesn't prevent you from transferring. It means the transfer completes in the 2026/27 tax year. Your existing ISA money stays tax-free throughout. The real deadline pressure is about two things: using your current-year allowance with the right provider, and locking in rates before April repricing.

If a transfer breaches the permitted timeframe, complain to the provider first. If that goes nowhere, the Financial Ombudsman Service (0800 023 4567) handles ISA transfer disputes and has upheld complaints where delays caused savers to miss out on interest. See our cash ISA transfer rules guide for the full breakdown of what to do when transfers go wrong.

Rate disappointment is the obvious trigger. With the base rate at 3.75%, any cash ISA paying below 3.5% deserves scrutiny — and plenty of providers have quietly dropped rates after the initial teaser period expires.

But rates aren't the only reason to move:

Consolidation. Years of opening a new ISA each April scatters money across half a dozen providers. Transferring old ISAs into one account simplifies management and often qualifies for tiered loyalty rates or lower platform fees.

Changing strategy. A saver who started with cash ISAs might want equity exposure as their pot grows. Transferring a cash ISA into a stocks and shares ISA is a single transfer form — no withdrawal, no lost tax-free status. This is the same logic behind bed and ISA, where you sell taxable holdings and rebuy them inside the ISA wrapper.

Lower fees. Platform charges on stocks and shares ISAs range from 0.00% (flat-fee models) to 0.45% of your portfolio per year. On a £50,000 ISA, the difference between 0.15% and 0.45% is £150/year — compounding over a decade, that's thousands lost to fees.

Flexibility. Some providers offer flexible ISAs letting you withdraw and replace money within the same tax year without it counting against your allowance. If your current provider doesn't offer this, transferring to one that does gives you materially more control over your cash.

One common mistake: assuming you're locked into your current provider for the tax year. You aren't. Our ISA transfer allowance guide explains why.

Provider choice depends on whether you're holding cash or investments. For cash ISAs, the interest rate (fixed vs variable) is the only metric that matters. For stocks and shares ISAs, platform fees, fund charges, and dealing costs compound into significant differences over time.

Note: Interactive Investor charges a flat monthly fee (from £4.99/month) rather than a percentage — the 0.00% reflects that there's no percentage-based charge. This makes it more cost-effective for larger portfolios.

Vanguard — 0.15% annual charge (capped at £375). Limited to Vanguard's own funds and ETFs, but those are among the UK's cheapest. Best for: passive investors with straightforward needs.

AJ Bell — 0.25% on funds (capped at £3.50/month for shares). Wide investment range including individual shares, investment trusts, and ETFs. Best for: investors wanting choice without premium pricing. See our full AJ Bell review for the fee breakdown.

Interactive Investor — Flat fee from £4.99/month. The flat structure means effective percentage cost falls as your portfolio grows. Best for: portfolios above £30,000 where flat beats percentage.

Hargreaves Lansdown — 0.45% annual charge (capped at £45/year for shares). Best research tools and customer service in the market. Best for: active investors who value service over cost.

Most providers charge no exit fees for ISA transfers. The exceptions are typically smaller building societies on fixed-rate cash ISAs, where early closure penalties (90–180 days of interest) may apply. Always check your terms before initiating.

For a deeper cash ISA comparison including easy access and fixed-rate picks, see our cash ISA rates guide.

The process starts with the provider you're moving to, not the one you're leaving:

1. Choose your new provider. Cash ISA or stocks and shares ISA? Compare rates and fees using the section above, or browse our ISA hub for current picks.

2. Open an account (if needed). You may need to open an ISA with the new provider first. This doesn't use your annual allowance unless you also make a new contribution.

3. Complete the ISA transfer form. Every provider has one — usually online, sometimes paper. You'll specify which ISA(s) to transfer, whether to move all or part of the balance, and whether to transfer current-year subscriptions, previous years, or both.

4. Wait. The new provider contacts your old one directly under HMRC's transfer regulations. You don't need to tell your old provider anything. Cash-to-cash: up to 15 working days. Everything else: up to 30 calendar days.

5. Verify. Check the full balance has arrived, including interest accrued up to the transfer date. For stocks and shares ISAs, verify all holdings transferred — fractional shares can sometimes cause minor discrepancies.

Three pitfalls to avoid:

• Don't withdraw first. Worth repeating: pulling money out of an ISA and putting it into a new one is not a transfer. That money permanently loses its tax-free wrapper.
• Fixed-rate penalties. If your cash ISA is on a fixed rate that hasn't matured, check for early access penalties. Some providers deduct 90–180 days of interest.
• In-specie transfers. Moving a stocks and shares ISA and want to keep existing holdings rather than selling and rebuying? Request an in-specie ("in kind") transfer. Not all providers support this for all fund types — confirm before you start.

For more on cash ISA transfers specifically — including avoiding lost interest during the transfer window — read our guide to switching cash ISAs. For broader savings strategy, the savings hub tracks the best non-ISA rates alongside ISA options.

This article is for informational purposes only and does not constitute financial advice. You should seek independent financial advice before making any investment decisions.