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 Deciding When to Take Social Security One of the most common questions people ask about Social Security is when they should start taking benefits. The Other Sure Thing Though we don't like to think about it, all of us will make an exit sometime. Are you prepared? 9 Facts About Social Security There are things about Social Security that might surprise you.