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. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Retiring the 4% Rule A portfolio created with your long-term objectives in mind is crucial as you pursue your dream retirement. What's New for Social Security? There have been a number of changes to Social Security that may affect you, especially if you are nearing retirement. Saving for Retirement This calculator can help you estimate how much you may need to save for retirement.