ISA vs Savings Account — Which Gives Better Returns?
Compare ISA returns with regular savings accounts. See when the ISA tax-free wrapper makes a meaningful difference to your wealth.
With the Personal Savings Allowance giving basic-rate taxpayers £1000 tax-free interest and higher-rate taxpayers £500 many people wonder if ISAs are still necessary. The answer depends on your savings level: below £20000 in savings the PSA covers most interest. Above £20000-30000 the ISA tax-free wrapper starts saving you real money.
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Key Information
| Parameter | Details |
|---|---|
| Cash ISA Rate (2026) | 4.0% - 5.0% |
| Easy Access Savings Rate | 4.0% - 5.2% |
| Personal Savings Allowance (Basic) | £1000 tax-free interest |
| Personal Savings Allowance (Higher) | £500 tax-free interest |
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Use Calculator NowFrequently Asked Questions
When does an ISA save me money?
A basic-rate taxpayer needs £25000+ in savings at 4% (generating £1000+ interest) before exceeding the £1000 PSA. Below that amount a regular savings account works fine. Higher-rate taxpayers hit the £500 limit at £12500 in savings making ISAs beneficial sooner. Additional-rate taxpayers get no PSA so ISAs always help.
Should I use Cash ISA or Stocks and Shares ISA?
For money needed within 5 years: Cash ISA for certainty. For 5+ year goals: Stocks and Shares ISA for higher historical returns (7-10% vs 4-5%). The £20000 annual allowance can be split between both. Many financial advisors recommend using the full allowance in Stocks and Shares ISA if you have a long time horizon.
Can I transfer old ISAs?
Yes you can transfer previous years ISAs between providers without affecting your allowance. Transfer in-specie (without selling investments) to avoid losing market position. Always use the official ISA transfer process — withdrawing and re-depositing loses the ISA wrapper and wastes your allowance.
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Last updated: March 2026