Switching ISA provider is common — perhaps chasing lower fees, a better fund range, or simply consolidating accounts built up over the years. But there's exactly one correct way to move a Stocks & Shares ISA between providers, and doing it incorrectly can permanently forfeit the tax-free status that took years to build up. Understanding the transfer process is essential before moving a single pound.
The golden rule: never withdraw it yourself
The single most important thing to understand about ISA transfers is that the investor should never withdraw the money from the old ISA and then simply pay it into the new one personally. Doing so treats the money as a fresh contribution, capped by whatever remains of that tax year's £20,000 allowance — and any tax-free history built up in previous years is lost. A £150,000 ISA balance built up over a decade cannot simply be withdrawn and redeposited; only £20,000 of new allowance would be available to redeposit that tax year, with the rest becoming ordinary, unwrapped savings.
Instead, ISA transfers must be carried out using the official transfer process, initiated with the new (receiving) provider, not the old one.
How the official transfer process works
- The investor opens an ISA with the new provider (or uses an existing one) and completes that provider's ISA transfer request form or process.
- The new provider contacts the old provider directly on the investor's behalf, requesting the transfer.
- The old provider either transfers the cash value of the investments (a "cash transfer," after selling the underlying holdings) or transfers the investments themselves "in specie" (without selling), if both providers support this.
- Regulatory timelines require providers to complete a Stocks & Shares ISA transfer within a set number of business days (commonly around 15 working days, though this can vary and is worth confirming), though in practice transfers involving in-specie transfers of less common funds can sometimes take longer.
- The full transferred amount retains its ISA tax-free wrapper status throughout, and does not count against the current year's £20,000 allowance, regardless of how large the transferred sum is.
Cash transfer vs in-specie transfer
| Transfer type | How it works | Considerations |
|---|---|---|
| Cash transfer | Existing holdings are sold, and the cash proceeds are moved to the new provider, where the investor then chooses new investments | The investor is briefly out of the market during the transfer, meaning gains or losses during that window are missed either way; may also trigger short-term timing risk |
| In-specie transfer | The actual investments (funds, shares) are moved to the new provider without being sold | Avoids being out of the market, but not all providers support this, and it may only be possible for certain types of holdings the new platform also offers |
Not every combination of old and new provider supports in-specie transfers for every type of holding, so it's worth asking the new provider directly which option is available before starting the process.
Transferring different types of ISA
Transferring only this year's contributions
If an investor has contributed to an ISA in the current tax year and wants to transfer, they generally must transfer the whole of that current year's contribution to a single new provider — it cannot be split between multiple providers. Money from previous tax years, however, can typically be transferred in whole or in part, to one or more providers, depending on individual provider rules.
Converting between ISA types
Transfers aren't limited to moving within the same type of ISA. A Cash ISA can be transferred into a Stocks & Shares ISA (or vice versa) using the same official process, which is useful for an investor who initially built up savings in cash and later decides to invest some or all of it for the longer term.
Transferring between JISAs and Lifetime ISAs
Junior ISAs can be transferred between providers using a similar official process, and again, only a parent or the child (once entitled) should initiate this — not a personal withdrawal. Lifetime ISAs can also be transferred to a new Lifetime ISA provider (or, in specific circumstances, converted), but transferring a LISA to a different type of ISA, or withdrawing rather than transferring, can trigger the 25% government withdrawal charge — so LISA holders in particular need to check the specific transfer being requested is provider-to-provider and LISA-to-LISA if they want to avoid the charge.
How long a transfer typically takes
While regulatory expectations point to a matter of weeks for a straightforward transfer, the reality can vary a great deal depending on the type of assets held, whether an in-specie transfer is being used, and how efficiently the two providers involved communicate. Investors sometimes underestimate this timeline when planning around a deadline (such as an upcoming home purchase involving a Lifetime ISA bonus), so building in a buffer rather than assuming the fastest possible timeline is a sensible precaution.
A worked example
Suppose an investor has £80,000 built up in a Stocks & Shares ISA with one provider across several previous tax years, plus £6,000 contributed to that same ISA in the current tax year. They want to move everything to a new provider with lower ongoing charges.
Using the official transfer process, the new provider requests the full £86,000 from the old provider. Because this is a proper ISA transfer rather than a withdrawal-and-redeposit, none of it counts against the investor's £20,000 allowance for the year — the whole balance keeps its tax-free status, and the investor still has their full £20,000 allowance available for any further new contributions that tax year. Had the investor instead withdrawn the £86,000 and paid it into the new ISA themselves, only £20,000 of it could have been redeposited tax-free that year, with the remaining £66,000 losing its ISA wrapper entirely and becoming ordinary taxable savings — a costly and irreversible mistake caused simply by using the wrong mechanism to move the money, even though the underlying intention (consolidating with a cheaper provider) was entirely sound.
Common pitfalls
Instructing the wrong provider
The transfer request should always be made with the new provider receiving the money, not the old one being left. Contacting the old provider to ask them to "send the money over" risks it being processed as a simple withdrawal rather than a formal transfer.
Assuming all fund choices carry across
If a new provider doesn't offer the same specific fund a client held with the old provider, an in-specie transfer of that particular holding may not be possible, forcing a cash transfer (and a sale) for at least that portion of the portfolio.
Overlooking exit fees or transfer charges
Some providers charge an exit fee for transferring out, particularly for older accounts or as a percentage of assets transferred. These charges are a legitimate factor to weigh against the benefits of moving providers, though many modern platforms have moved away from charging them.
Not comparing what's actually being gained
A lower headline platform fee is not the only thing worth comparing before transferring. A new provider's fund range, customer service track record, app or website usability, and the specific way it charges (flat fee versus percentage of assets, which suits different portfolio sizes very differently) can matter just as much as the number on the fee page. Some investors transfer chasing a marginally lower fee only to find the new platform's fund range doesn't cover a holding they wanted to keep.
Transfer versus withdraw-and-redeposit, at a glance
| Aspect | Official ISA transfer | Withdraw and redeposit personally |
|---|---|---|
| Tax-free status of past years' savings | Fully preserved | Lost, beyond whatever fits the current year's allowance |
| Effect on current year's allowance | None, however large the transferred sum | Redeposit counts as a new contribution, capped at £20,000 |
| Who initiates it | The new (receiving) provider | The investor, informally |
| Time out of the market | Depends on cash vs in-specie method | Depends on how quickly the investor acts, but risk is the same in principle |
Frequently asked questions
Does starting an ISA transfer use up any of this year's allowance?
No. A properly executed transfer of existing ISA savings — whether from this year or previous years — does not count as a new subscription and has no effect on the £20,000 annual allowance, which remains fully available for genuinely new contributions.
Can a partial transfer be requested for previous years' ISA savings?
Generally yes, subject to the old provider's and new provider's own rules — many providers allow investors to transfer only part of their accumulated previous-years' balance, leaving the remainder with the original provider, though some may only support transferring the account in full.
What happens if a transfer goes wrong or takes far longer than expected?
If a transfer stalls well beyond the usual timelines, the investor's first step is typically to contact the new (receiving) provider, since they are the one who initiated and is meant to be chasing the request. If the delay causes a genuine financial loss — for example through prolonged time out of the market during a cash transfer — providers have formal complaints processes, and the matter can ultimately be escalated to the Financial Ombudsman Service if unresolved.
Key takeaways
- Never withdraw ISA money and pay it into a new provider directly — always use the official ISA transfer process to preserve tax-free status.
- Transfers are initiated with the new (receiving) provider, who contacts the old provider on the investor's behalf.
- Transferred amounts, however large, don't count against the current year's £20,000 allowance, because the money already has ISA status.
- Transfers can be in cash (holdings sold first) or in specie (investments moved without selling), where supported.
- Current-year contributions must generally transfer in full to one provider; previous years' savings can often be split or partially transferred.
- Check for exit fees, transfer timelines, and whether in-specie transfer is available before starting the process.