How to Fill Out and Submit an ISA Transfer Form

An ISA transfer form is the instruction you give your new ISA provider so they can pull your Individual Savings Account across from your old provider without the money ever passing through your hands. That last part is the whole point: if funds land in your bank account and you redeposit them, they lose their tax-free status and count against your £20,000 annual allowance. The form keeps the transfer provider-to-provider, and the tax wrapper travels with it.

Get the Form From the Provider You Are Moving To

Always start with the new provider, never the old one. Open an account (or begin the application) with your chosen new ISA manager and ask for their transfer form. Most providers build it into the online sign-up flow; some still use a printable PDF or a paper form sent by post.

Do not phone your existing provider to withdraw the money yourself. That is the single most common way people accidentally strip their savings of tax-free protection. Once you hand the completed form to your new provider, they forward the instruction to the old manager, verify the balance, and arrange settlement between the two institutions.

Information the Form Asks For

ISA transfer forms follow a standard structure set by HMRC, with small variations between cash ISA and stocks and shares ISA forms. You will typically need to supply:

Full legal name. Forenames (or first name and initial) and surname, exactly as they appear on your existing ISA.
Permanent residential address and postcode. Care-of and correspondence addresses are not accepted.
Date of birth in DD/MM/YYYY format. For Lifetime ISAs, the full date of birth is mandatory.
National Insurance number in the standard format (e.g., AB 12 34 56 C). If you have not been issued one but are still eligible for an ISA, your provider can use a universal placeholder rather than reject the form.
Existing provider name and account number as held on the current manager’s records. For Lifetime ISAs, the account number must match what was previously reported to HMRC.
Type of transfer: whether all remaining current-year subscriptions are moving (marked “A”) or some are staying behind (marked “X”).
Amount to transfer: the total cash amount, plus a list of any investments moving in specie rather than as cash.

Your new provider prefills some fields from your account application; you confirm or supply the rest. The form also includes a signature or digital authorisation letting both institutions share your financial data and complete the settlement.¹

Mistakes That Get the Form Rejected

The most frequent cause of a failed transfer is selecting the wrong provider name on the form. Many banking groups run several brands under one legal entity, and picking the wrong brand or trading name can cause the old manager’s system to reject the request because the account number will not match their records.² When that happens, the whole process starts over.

The other usual culprits are an outdated address that no longer matches the old provider’s records, a transposed digit in the account number, and an incomplete National Insurance number. Check every field against a recent statement from your current ISA provider before submitting.

Full or Partial, Cash or In-Specie

The form asks you to choose how much is moving and, for investment ISAs, in what form. You can transfer all or part of your balance, and the money can come from the current tax year or previous years.³ Partial transfers are allowed regardless of when the money was paid in, so you can move only the amount you want and leave the rest where it is.⁴

For a stocks and shares ISA, the form distinguishes cash transfers from in-specie transfers. A cash transfer means your old provider sells your holdings, sends the proceeds, and the new provider reinvests. An in-specie transfer means the shares, funds, or bonds are re-registered in the new provider’s name without being sold. In-specie keeps you invested throughout, so you do not miss market movement during the transition, but it takes longer, needs both providers to support the same fund classes, and involves more coordination. Proprietary share classes and certain niche funds may need to be sold regardless. Because selling inside an ISA does not trigger capital gains tax, the reason to choose in-specie is time in the market, not tax efficiency. Ask both providers whether in-specie is supported before defaulting to cash. On the form, you enter the total cash amount being transferred and tick a separate box with an attached list for any in-specie holdings.¹

After You Submit

Once you have signed the form, on paper or digitally, return it to your new provider. You do not need to contact the old provider separately. You should get a confirmation by email or through your online dashboard; watch for any follow-up asking for a missing detail. A final welcome statement or confirmation from the new provider marks the transfer complete and the tax wrapper intact in its new home.

GOV.UK sets clear timeframes:

Cash ISA to cash ISA: 15 working days from when the new provider receives a valid instruction.
All other transfer types, including stocks and shares, innovative finance, and Lifetime ISAs: 30 calendar days.

In-specie transfers of investment portfolios can run longer than 30 days in practice, particularly when unusual fund classes are involved.¹

If the Transfer Is Delayed

Contact your new provider first; they are responsible for chasing the old manager. If that does not fix it, complain formally to whichever provider is causing the delay. The firm has eight weeks to respond with a final answer. If you are still unsatisfied, the Financial Ombudsman Service can step in and can award compensation for financial loss and for distress and inconvenience.⁵

Exit Fees and Charges

There is no blanket ban on transfer charges. Some providers charge an exit fee, an account-closure fee, or a per-holding transfer fee (common with stocks and shares ISAs where each fund line is re-registered individually). Check with your existing provider before submitting the form so you are not caught out by a deduction from the transferred balance.³ Many newer platforms advertise fee-free transfers, and some new providers will reimburse exit fees up to a set amount. Worth asking before you commit.

Inherited ISAs Use a Different Route

The standard transfer form does not cover an Additional Permitted Subscription (APS). If your spouse or civil partner died on or after 3 December 2014, you are entitled to an APS that lets you save an extra tax-free amount on top of your own £20,000 allowance, equal to either the value of their ISA at the date of death or the value when the ISA is closed, whichever is higher (for deaths on or after 6 April 2018).⁶ You can use the APS with the deceased’s ISA manager or move it to a new provider through the APS process specifically. It must be used within three years of the date of death, or within 180 days of the estate administration being completed, whichever comes later. You do not need to have inherited the underlying assets to claim it.

US Citizens Still Need to Report the Account

The ISA’s tax-free status is a UK benefit. The United States does not recognise it. If you are a US citizen or green card holder living in the UK, all interest, dividends, and capital gains inside your ISA remain taxable on your US federal return, and transferring between UK providers does not change that.

You likely also have two separate foreign-account reporting duties. Under FATCA, Form 8938 (Statement of Specified Foreign Financial Assets) is filed with your tax return if your foreign financial assets exceed certain thresholds: $50,000 at year-end or $75,000 at any point during the year for unmarried taxpayers living in the US, with higher thresholds for joint filers and those living abroad. Separately, FinCEN Form 114 (FBAR) is required if the aggregate value of all your foreign financial accounts exceeds $10,000 at any point during the year. These are two filings with two agencies; one does not substitute for the other.⁷

A transfer between UK providers is not itself a new reporting event, but both account balances still need to appear on the relevant filings for any year the thresholds are met. If the transfer straddles a period when the balance is unusually high, keep clear records of where the money sat, and when, for FBAR purposes.

1
HM Revenue & Customs. Transfer an ISA if You’re an ISA Manager
2
Financial Ombudsman Service. Decision DRN-4683742
3
GOV.UK. Individual Savings Accounts (ISAs) – Transferring Your ISA
4
MoneyHelper. Understanding the New ISA Rules for 2025/26
5
Financial Ombudsman Service. Individual Savings Accounts (ISAs)
6
GOV.UK. Inheriting an ISA From Your Spouse or Civil Partner
7
Internal Revenue Service. Summary of FATCA Reporting for US Taxpayers