My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Paying Off a Credit Card Enter various payment options and determine how long it may take to pay off a credit card. Forecast This short video helps explain why markets can be as unpredictable as the weather. Taxable vs. Tax-Deferred Savings Use this calculator to compare the future value of investments with different tax consequences.