NS&I Premium Bonds vs Standard savings account
Side-by-side comparison, when-to-use-each guide, and instant conversion. Reviewed for 2026.
Tax-free wins, gambling-style excitement, money you don't need to access often, additional-rate taxpayers who want tax-free returns.
Guaranteed return, regular savers, anyone who needs to calculate returns for financial planning.
| Aspect | NS&I Premium Bonds | Standard savings account |
|---|---|---|
| Provider | NS&I (government-backed) | Banks, building societies |
| Rate | Prize fund rate ~4.4% (May 2026) | 4.0-5.0% easy access (2026) |
| Guaranteed? | No — lottery system | Yes (to FSCS £85k limit) |
| Tax | Tax-free prizes | Counts toward Personal Savings Allowance |
| Access | Any time (3 working days to withdraw) | Varies (instant to 90+ days notice) |
Frequently asked
What are my chances of winning with Premium Bonds?
With £10,000 in Premium Bonds, the probability of winning at least £25 in any given month is about 31%. Most months you'll win nothing. Over a year, statistically you'd expect to win prizes totalling less than the 4.4% prize fund rate because the prize distribution is skewed by large prizes.
Who should use Premium Bonds?
Best for: additional-rate taxpayers (45%) who've used their ISA allowance and Personal Savings Allowance — tax-free prizes are genuinely valuable. Worst for: basic-rate taxpayers with under £20,000 who can use an ISA instead (tax-free interest with guaranteed returns).