Transferring your ISA sounds complicated. It isn't — but there are rules that catch people out, and one mistake can cost you your annual allowance for good. This guide walks you through everything in plain English.
What Is an ISA Transfer?
An ISA transfer is the official process of moving money from one ISA to another — either a different ISA type or the same type at a new provider — without losing the tax-free wrapper.
This is different from withdrawing cash from your ISA and re-depositing it elsewhere. If you do it that way, you lose the tax-free status on that money permanently (unless you have a Flexible ISA, but more on that below).
Why Would You Want to Transfer?
There are good reasons to move your ISA:
- Your current platform is expensive. Fees compound just like returns — a 0.45% annual fee versus a 0.15% one on a £50,000 portfolio is £150 extra per year, every year.
- You want better investment options. Some cash ISAs offer rock-bottom rates. Some stocks and shares ISA platforms have limited fund selections.
- You're switching from cash to investments. Many people start with a cash ISA and later want to move into a stocks and shares ISA as they become more comfortable investing.
- Your provider was just acquired. Platform consolidation in the UK has been rapid. If your provider changes, it's worth reviewing whether the new setup still suits you.
- You want to consolidate. If you've opened ISAs at different providers over the years, managing them all separately is a headache.
The Core ISA Transfer Rules
Before you do anything, understand these:
1. You can transfer ISAs from previous tax years freely
Any ISA balance built up in previous tax years can be transferred in full or in part without affecting your current year's £20,000 allowance.
2. Current year contributions must be transferred in full
If you've paid into an ISA in the current tax year (2025/26 ends 5 April 2026), you must transfer the entire balance from that ISA if you decide to move it. You can't split it.
3. You initiate the transfer with the new provider — not the old one
This is where people go wrong. Contact the new provider and ask them to pull the money across. Do not contact your old provider and ask them to send it. If you close your old account yourself and transfer the funds manually, you lose the ISA wrapper.
4. Cash ISA to Stocks and Shares ISA — allowed
You can transfer a cash ISA into a stocks and shares ISA. The reverse is also allowed. You can also transfer between ISA providers of the same type.
5. Flexible ISAs have different rules
A Flexible ISA lets you withdraw and re-deposit money in the same tax year without affecting your allowance. If you have one, check whether your new provider also offers a Flexible ISA before you transfer — you'd lose that flexibility.
Step-by-Step: How to Transfer Your ISA
Step 1 — Choose your new provider
Don't rush this. Compare fees, investment options, and platform usability. For stocks and shares ISAs, leading UK options in 2026 include InvestEngine vs Vanguard (we've compared both in detail). For a broader view of all options, see our best stocks and shares ISA for beginners guide.
Step 2 — Open an account with the new provider
Most platforms let you open a stocks and shares ISA online in under 10 minutes. You'll need your National Insurance number and proof of identity.
Step 3 — Request the transfer with your new provider
Find the "ISA transfer in" section on your new platform (it's usually under Account Settings or similar). You'll need your existing ISA provider's name, your account number or reference, and the approximate value you want to transfer.
Step 4 — The new provider contacts your old one
Your new provider sends a request to your old provider. You don't need to do anything at this stage — though some providers may contact you to confirm.
Step 5 — Wait
- Cash ISA to Cash ISA: up to 15 working days
- Cash ISA to Stocks and Shares ISA: up to 30 days
- Stocks and Shares ISA to Stocks and Shares ISA: up to 30 days (investments are usually sold to cash first, then transferred as cash and reinvested — you'll be out of the market briefly)
Step 6 — Confirm receipt
Once the transfer completes, log into your new provider and check the balance has arrived. Keep a record of the transfer confirmation in case of any disputes.
How Long Does an ISA Transfer Take?
| Transfer Type | Timescale |
|---|---|
| Cash ISA → Cash ISA | Up to 15 working days |
| Cash ISA → Stocks & Shares ISA | Up to 30 days |
| Stocks & Shares ISA → Stocks & Shares ISA | Up to 30 days |
| Stocks & Shares ISA → Cash ISA | Up to 30 days |
In practice, many cash ISA transfers complete in 5–7 working days. Stocks and shares transfers can take the full 30 days depending on the platforms involved and whether in-specie transfers are used (see below).
In-Specie vs Cash Transfer — What's the Difference?
When transferring a stocks and shares ISA, you usually have two options:
- Cash transfer: Your investments are sold, the cash moves to the new platform, and you reinvest. You're out of the market for a period. Capital gains inside an ISA are tax-free, so there's no tax implication — but you do face reinvestment risk if markets move during the transfer.
- In-specie transfer: Your actual shares or funds move across without being sold first. Both providers must support this. It's slower but keeps you invested throughout.
Not all platforms support in-specie transfers — always check before initiating if this matters to you.
Best Platforms to Transfer Your ISA to in 2026
Here's a quick overview of the most popular options for UK investors:
| Platform | Annual Fee | Best For |
|---|---|---|
| InvestEngine | 0.15% (managed) / 0% (DIY) | Low-cost ETF investing |
| Vanguard | 0.15% (capped at £375) | Index fund purists |
| Trading 212 | 0% | Commission-free share trading |
| Hargreaves Lansdown | 0.45% (capped) | Broad choice, excellent support |
| AJ Bell | 0.25% (capped) | Good middle ground |
| Freetrade | From £4.99/month (ISA) | Beginners, basic portfolios |
For a detailed comparison of InvestEngine and Vanguard — still the two most-discussed platforms for long-term passive investors — see our full review.
Common ISA Transfer Mistakes to Avoid
1. Withdrawing instead of transferring
The most expensive mistake. Withdraw your ISA balance and re-deposit it elsewhere, and you've permanently lost that tax-free wrapper (unless it's a Flexible ISA). The money counts as a fresh contribution and eats into your current year's £20,000 allowance.
2. Splitting a current-year ISA
You cannot partially transfer current-year contributions. If you've paid £8,000 into a cash ISA this tax year and want to move it, you move all £8,000 — you can't keep £3,000 there.
3. Initiating the transfer from the wrong end
Always start with the new provider. Contacting your old provider to "send the money" often results in a withdrawal, not a transfer.
4. Not checking for exit fees
A handful of providers still charge transfer-out fees. Check your existing provider's terms before initiating.
5. Missing the tax year deadline
If you're trying to use your 2025/26 ISA allowance, any new contributions must be made by 5 April 2026. Transfers themselves don't have a deadline — but starting them in late March means the transfer might complete after the tax year closes, so the balance still counts against your current year allowance correctly (it doesn't reset it).
ISA Transfer and the Junior ISA
If you have a Junior ISA, the same transfer rules apply. You can transfer a Junior Cash ISA to a Junior Stocks and Shares ISA, or move between providers of the same type. Only the registered contact (usually the parent or guardian) can initiate the transfer. The child cannot access the money until age 18 regardless of which provider holds it.
Reading List: Understanding Your ISA Better
If you're at the stage of thinking carefully about where to hold your money, it's worth understanding the fundamentals. One of the best plain-English books on investing for UK readers is Smarter Investing by Tim Hale — a no-nonsense guide to building a low-cost, long-term portfolio. Available on Amazon UK.
FAQ
Can I transfer my ISA without losing my allowance?
Yes — as long as you use the official transfer process through your new provider, your tax-free wrapper is preserved and your annual allowance is unaffected. Never withdraw and re-deposit.
Can I transfer a Cash ISA to a Stocks and Shares ISA?
Yes. You can transfer between different ISA types. The process takes up to 30 days. The balance moves tax-free.
Can I transfer only part of my ISA?
Yes, for previous tax year contributions. For anything you've paid in during the current tax year (since 6 April 2025), you must transfer the full amount if you decide to move it.
What happens to my investments during a Stocks and Shares ISA transfer?
Usually they're sold to cash, transferred, then reinvested. You may be out of the market for a few weeks. Some platforms support in-specie transfers where holdings move directly — check both platforms first.
Is there a fee to transfer my ISA?
Some providers charge exit fees (typically £25–£50 per holding or a flat fee). Check your existing provider's terms before starting. The new provider never charges you to receive a transfer.
How many times can I transfer my ISA?
There's no legal limit on how often you can transfer. You can switch providers every year if you want. Just watch for exit fees and the time you spend out of the market.
Can I transfer an ISA after the end of the tax year?
Yes. ISA transfers aren't tied to the tax year — you can initiate one at any time. The balance simply moves with its tax-free history intact.
What is a Flexible ISA and how does it affect transfers?
A Flexible ISA lets you withdraw and replace money within the same tax year without affecting your allowance. If you transfer a Flexible ISA to a non-flexible provider, you lose that flexibility going forward. Check before you transfer.