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Borrowing and savings calculator

Use our interest rate calculator to see how interest rates affect borrowing and saving.

How to use our calculator

Choose how much you want to save or borrow. Enter the amount into the box. Use the slider to set the . This will show you how the interest rate affects your borrowing or saving. Even a small change can have a big impact.

About our calculator

Our borrowing / savings calculator is designed for illustrative and general reference purposes only. For more detailed and specific information we recommend using the MoneyHelper loan calculator and savings calculator.

Find out more

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This page was last updated 03 July 2025