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 Question Thank you! Oops! Related Content Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. Investments You’ve made investments your whole life. Work with us to help make the most of them. Stop Wasting Money One way to find money is to examine your current spending habits and eliminate money wasters.