Savings Interest Calculator

Interest on savings — simple or compound over time.

Result

Interest£1,411.66
Final balance£11,411.66

Savings Interest Calculator — FAQs

Is savings interest taxed?

Basic-rate taxpayers get £1,000 Personal Savings Allowance (£500 higher-rate, £0 additional). ISAs are tax-free up to £20,000/year.

AER vs gross rate?

AER shows the return with compounding over a year — the honest comparison figure.

What is a good savings rate UK?

Easy-access ~4–5% was typical in 2025; fixed bonds pay more for locking funds. Rates track the Bank of England base rate.

Are ISAs worth it?

Yes — £20,000/year allowance, all interest and gains tax-free. Especially valuable above the £1,000 (£500 higher-rate) savings allowance.

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Embed this Savings Interest Calculator on your site

Free to use — paste this snippet into any webpage. It auto-resizes and includes a small attribution link. Add ?theme=dark to the iframe URL for dark mode.