Savings & Investment Calculators

See how your savings grow over time with compound interest and regular monthly contributions.

Calculate compound interest on any amount with flexible compounding frequencies.

Work out how much you need to save each month to reach your savings target.

Calculate the tax-free growth of your ISA savings over time.

Compare different savings accounts and interest rates side by side to find the best option.

Compare projected returns from savings accounts versus stock market investing over time.

Calculate how regular monthly savings grow over time with interest.

Calculate how much you need in your emergency fund based on your monthly expenses.

Calculate your ISA allowance for the 2025/26 and 2026/27 tax years. Track contributions across Cash ISA, Stocks & Shares ISA, and Lifetime ISA.

Project the growth of your Stocks and Shares ISA over time with compound returns and annual contributions.

Calculate your Lifetime ISA growth including the 25% government bonus. See how much you could save for your first home or retirement.

Calculate whether you owe tax on your savings interest. Check your Personal Savings Allowance and starting rate for savings.

Calculate potential investment returns with compound growth, regular contributions, and different risk profiles.

Calculate the long-term impact of reinvesting dividends versus taking them as income.

Calculate your potential savings and government bonus with the Help to Save scheme. Save up to £50/month and earn a 50% bonus.

Calculate your debt-to-income ratio to assess your borrowing capacity.

Find out how long it will take you to reach one million pounds.

Calculate your Financial Independence Retire Early number and timeline.

Work out how much emergency fund you need and how to build it.

Track your ISA allowance usage across all ISA types for the tax year.