Millionaire Calculator Enter your starting balance, your ending balance, monthly contribution and interest rate. This will find out how long it will take until you reach that goal (default = $1,000,000). Of course that million won't be worth very much way, way in the future. Put in an inflation factor and this will show you what it's worth then. Initial Amount Monthly Deposit Average Annual Return % Average Annual Inflation % Inflate Deposits? YesNo Final Amount Desired