Savings interest calculator
See what your savings could earn over time, including regular monthly top-ups and compound growth. Change the rate, the term and the deposit to compare scenarios side by side.
Frequently asked questions
What is AER?
AER (Annual Equivalent Rate) shows the yearly interest including compounding, so it's the fairest way to compare savings accounts.
What is compound interest?
It's interest earned on your interest as well as your original money. The longer you save, the more of your growth comes from compounding.
Will I pay tax on savings interest?
Possibly, above your Personal Savings Allowance (£1,000 basic-rate, £500 higher-rate, £0 additional-rate). Check the PSA calculator to see where you stand.
Related tools
- Net worth calculator — Free UK net worth calculator.
- Savings goal calculator — Free savings goal calculator.
- ISA allowance calculator — Free ISA allowance calculator for 2026/27.
- Personal Savings Allowance calculator — Free Personal Savings Allowance calculator.
- FSCS limit checker — Free FSCS limit checker.
- Premium Bonds calculator — Free Premium Bonds calculator.
- Compound interest calculator — Free compound interest calculator.
- All free UK finance tools
- Back to Oinkly