Switching savings accounts is one of the most financially effective things you can do in under 30 minutes. At current rates, moving £15,000 from a typical high street account paying 1.5% to a market-leading account at 4.8% earns you an extra £495 per year — entirely risk-free and with no exit fees. Most people put it off because they assume it is complicated. It is not.
This guide covers when to switch, how to do it step by step, what happens to your interest, and the separate (but equally simple) process for transferring a Cash ISA.
When Should You Switch?
Not every rate difference is worth the effort, but the bar is lower than most people think. On a meaningful balance, even a small rate improvement repays the 20-minute effort within days.
Is It Worth Switching? Quick Check
| Your Balance | Rate Difference | Extra Annual Interest | Break-Even (Time Spent: 20 min) |
|---|---|---|---|
| £5,000 | 0.5% | £25 | Yes |
| £10,000 | 0.5% | £50 | Yes |
| £20,000 | 0.5% | £100 | Definitely |
| £5,000 | 1.0% | £50 | Yes |
| £10,000 | 1.0% | £100 | Definitely |
| £20,000 | 1.5% | £300 | Definitely |
The most common trigger points for switching:
- Your introductory bonus expires — Many easy-access accounts pay an elevated rate for 12 months, then drop sharply. If you haven’t checked since opening the account, this is likely what happened.
- You haven’t reviewed your rate in over a year — Savings rates have moved significantly since 2022. Loyal customers at traditional banks are often earning 1–2% while the market pays 4.5–5%.
- A significantly better rate has appeared — You don’t need to chase every 0.1% improvement, but a difference of 0.5%+ on a meaningful balance is worth acting on.
- Your fixed term is ending — When a fixed-rate bond matures, you’re typically moved to a low default rate. Switch immediately; providers count on inertia here.
- Your circumstances have changed — More savings than before, or you no longer need instant access, means a notice or fixed account may now be more appropriate.
How to Find a Better Rate
Use a best-buy comparison table before switching — rates change weekly and vary by account type. The most reliable sources:
- MoneySavingExpert Top Savings — updated frequently, notes FSCS status and bonus periods
- Moneyfacts — comprehensive, covers the full market
- Your current bank’s app or website — some banks offer existing customers exclusive rates not available to new applicants; check before leaving
When comparing, always look at the AER (Annual Equivalent Rate), not the gross rate. AER standardises compounding so accounts paying monthly and annually are directly comparable. Also check whether any higher rate is an introductory bonus, and what the standard rate drops to afterwards.
Confirm FSCS protection before applying to any account, especially with providers you don’t recognise. Check the FSCS register at fscs.org.uk — it takes 30 seconds and confirms whether your money is protected up to £85,000.
Step-by-Step: How to Switch a Standard Savings Account
Step 1 — Apply for the New Account (10–20 minutes)
Most savings accounts open entirely online. You’ll typically need:
- Your National Insurance number
- Your UK address for the past 3 years
- Your existing bank’s sort code and account number (to fund the new account)
- A form of photo ID if the provider doesn’t recognise you from open banking data
For most people applying to an established UK bank, no additional ID documents are needed — the provider verifies identity electronically. If you’re applying to a newer provider, they may ask you to photograph your passport or driving licence via the app.
Step 2 — Receive Confirmation and Account Details (same day to 1 working day)
Once approved, you’ll receive your new account number and sort code by email or within the app. The account is typically active the same day or the next working day.
Step 3 — Transfer the Money (1–2 working days)
Transfer from your old account using a standard bank transfer. Use your new savings account’s sort code and account number as the destination. The reference field usually doesn’t matter for savings accounts, but some providers ask you to use your name or account reference — check their guidance.
Important: If transferring a large sum, check whether the transfer will be sent as Faster Payments (instant to same day, up to £1,000,000 with most banks) or CHAPS (same-day guaranteed, may carry a small fee for very large transfers). Standard savings switches of up to £100,000 process via Faster Payments with no issues.
Step 4 — Check Interest Is Being Applied (first statement)
After a week or two, check your new account to confirm:
- Interest is accruing at the rate advertised
- No unexpected fees or conditions have been applied
- The balance matches what you transferred
Most providers show accrued interest in the account summary even before it is paid (usually monthly or annually).
Step 5 — Close the Old Account (optional, your timing)
There is no rush to close the old account. Many people leave it open with a nominal £1 balance for a few weeks to ensure everything has settled correctly. When you’re ready:
- Online banks: Use the account closure option in the app or web portal
- High street banks: Call their customer service line or visit a branch
- Building societies: Call or write; some require written confirmation
There are no exit fees or penalties for closing a UK savings account.
Total time for a complete switch: typically 30–45 minutes spread over 2–3 days.
The Cost of Not Switching: A Worked Example
Situation: Anna has £22,000 in a savings account at a high street bank earning 1.4% AER. She opened it two years ago when the rate was 4.2%, but the introductory bonus expired after 12 months and she didn’t notice.
Annual interest at 1.4%: £308
Annual interest at current market rate (4.7%): £1,034
Annual cost of not switching: £726
Anna spends 25 minutes comparing rates, applying for a new account, and transferring her money. Within 10 days her money is earning the new rate. She recovers the “time cost” of switching in the first 12 hours of the new interest accruing.
How to Transfer a Cash ISA — Different Process, Same Result
Switching a Cash ISA requires a specific transfer process rather than a standard bank transfer. This is the single most important thing to know about ISA transfers:
Never withdraw money from an ISA and re-deposit it in a new ISA. Withdrawal removes the tax-free wrapper. If you have used your annual ISA allowance, you cannot reclaim it by redepositing — that money permanently loses ISA protection.
Instead, use the official ISA transfer process:
ISA Transfer Steps
Step 1: Open a new Cash ISA (or identify the existing one you want to transfer into).
Step 2: Complete an ISA transfer request form — this is provided by your new ISA provider, not the old one. You can usually do this within the new provider’s app or online application.
Step 3: Your new provider contacts your old provider directly to arrange the transfer. You don’t need to contact the old provider yourself.
Step 4: The transfer completes. Current ISA regulations require providers to complete transfers within 15 working days for cash ISAs. Most transfers complete in 5–10 working days.
Step 5: Confirm the balance, interest rate, and tax-free status in your new account.
During the Transfer Period
Your money cannot earn interest in two places simultaneously. Most providers stop interest on the old account the day the transfer is initiated and begin paying interest in the new account from the day the funds arrive. The 5–15 working day gap means you typically lose 1–3 weeks of interest — worth approximately £20–30 on a £20,000 ISA at current rates. This is a one-time cost that the rate improvement recovers within days.
Partial ISA Transfers
You can transfer part of your ISA balance rather than all of it — for example, to move £10,000 to a fixed-rate ISA while keeping £5,000 in an easy-access ISA with your existing provider. Not all providers accept partial transfers — check before applying.
Keeping Your Money FSCS Protected During a Switch
During the transfer, your money will briefly exist in two places or in transit. This is safe because:
- Money in your old account remains FSCS protected until it leaves
- Faster Payments transfers are effectively instant (minutes, not days)
- Money in your new account is FSCS protected from the moment it arrives
The only scenario worth planning for is if you hold more than £85,000 at a single institution. In that case, split large transfers so no single provider holds more than the £85,000 limit. If you are receiving a lump sum (property sale, inheritance), the FSCS provides temporary high balance protection of up to £1,000,000 for 6 months after the qualifying event.
How Often Should You Review Your Savings Rate?
| Account Type | Suggested Review Frequency |
|---|---|
| Easy-access accounts | Every 6–12 months |
| Notice accounts | At the end of the notice period for any planned withdrawal |
| Fixed-rate bonds | 4–6 weeks before maturity (to have time to compare and apply) |
| Cash ISAs (easy-access) | Every 6–12 months |
| Cash ISAs (fixed) | 4–6 weeks before the fixed term ends |
Set a calendar reminder when you open any account. The most valuable reminder is for 12 months after an introductory bonus starts — that is when the rate is most likely to fall.