Skip to main content
Investing · ISA

ISA transfer rules: move providers without losing allowance

An ISA transfer moves your existing tax-free ISA money to a new provider while keeping the ISA wrapper intact. Done correctly, no allowance is used and no tax is paid. Done incorrectly — by withdrawing and re-depositing — the wrapper is lost forever. Here's the 2026/27 transfer mechanic: partial vs full, current-year vs prior-year rules, cash-to-S&S conversions, and the steps to take when a transfer goes wrong.

6-minute read

What you need to know: ISA transfer rules : move providers without losing allowance

Quick answer: To preserve ISA tax-free status when moving providers, you must use the formal "ISA transfer" process — initiated by the receiving provider, who contacts the existing provider on your behalf. Never withdraw and re-deposit: this permanently loses the ISA wrapper. Transfers can be full (the whole ISA) or partial (some of it).…

Key points:

To preserve ISA tax-free status when moving providers, you must use the formal "ISA transfer" process — initiated by the receiving provider, who contacts the existing provider on your behalf. Never withdraw and re-deposit: this permanently loses the ISA wrapper. Transfers can be full (the whole ISA) or partial (some of it). Current-year subscriptions (money paid in this tax year) must be transferred in full and to the same type of ISA. Prior-year subscriptions can be transferred in any amount, between types (Cash → S&S, S&S → Cash, etc.), and split across multiple receiving ISAs.

The two rules that actually matter

Rule 1 — Current-year vs prior-year.

Money you contributed to an ISA in the CURRENT tax year (since 6 April) is "current-year subscriptions." Money from previous tax years is "prior-year subscriptions." The two are treated differently in transfers:

Rule 2 — Use the formal transfer process.

The receiving provider initiates the transfer by contacting the existing provider. The cash (or stocks) move directly between the two providers' systems — never through your bank account. This preserves the ISA wrapper.

How to actually transfer (step by step)

  1. Open a new ISA with the receiving provider. You don't need to contribute anything to it; the transfer fills it.
  2. Request a transfer on the new provider's website or by paper form. You'll need: name and account number of your current ISA, the provider name, and details of how much to transfer (full or partial).
  3. The new provider contacts the old provider. You don't need to do anything. The old provider has a statutory 30-day window to complete the transfer.
  4. The money/assets arrive at the new ISA. Cash transfers usually take 7–10 working days. Stocks & Shares transfers can take 4–6 weeks (re-registering assets with custodians).
  5. Confirmation. Both providers send confirmation of the transfer; check that the amounts match your records.

Cash ISA to Stocks & Shares ISA (and vice versa)

For prior-year subscriptions, transferring between types is straightforward — the receiving provider sells/buys assets as needed.

Note: a Lifetime ISA can receive transfers from a Cash ISA or S&S ISA, but they count against your £4,000 annual LISA limit — not your £20,000 main allowance. So transferring £20,000 from a Cash ISA to a LISA would only be permitted £4,000 in any single tax year.

Partial transfers

For prior-year subscriptions, you can transfer just part of an ISA — e.g. half your Cash ISA balance moves to a new S&S ISA, half stays put. You keep two ISAs of (potentially) different types and providers, with the full original tax-free wrapper preserved.

Why partial transfers are useful:

What to do when transfers go wrong

Common problems and fixes:

The 30-day Financial Ombudsman fallback

If a transfer is taking too long, you can complain to the Financial Ombudsman Service (FOS) — but only after the provider has had 8 weeks to resolve internally. FOS compensation typically covers interest lost during the delay plus a small distress payment. Pre-emptive deal: most providers will give a goodwill payment of £25–£100 for transfer delays without a formal FOS complaint.

The 2024 reform — multiple ISAs of the same type

From April 2024, you can open multiple ISAs of the same type in the same tax year — e.g. two Cash ISAs. This affects transfers because you can now transfer current-year subscriptions to a new ISA without it being the only one of its type. Useful for short-term cash management, but doesn't change the underlying transfer rules.

Sources and methodology

Rules above follow HMRC's ISA transfer guidance and the ISA Regulations 1998 (as amended). For a personalised platform comparison, see the best ISA platforms guide. The methodology page documents sources.

Editorial accountability
Open Trust Centre →

Every page is reviewed against the editorial standards, written from primary sources, sourced openly, and corrected publicly. No affiliate revenue. No sponsored content. No paid placements.

Editorial standards Editorial process Corrections policy How we make money Editorial team Methodology