Savings calculator Enter the details of your savings and press the calculate. Initial Savings Amount (£): The initial savings amount. Monthly Deposit (£): The monthly savings amount. Average Annual Interest (%): The average annual interest rate. Average Annual Inflation (%): The average annual inflation rate. Number of Years: The number of years to save over. Calculate Capital Investment (£): The amount to consider as the investment into the fund. Rate Of Return: % The expected annual rate of return of the investment. Calculate Note: These calculations are only for illustrative purposes and are not a substitute for professional advice.