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 Understanding Equity Compensation Net Unrealized Appreciation and how it affects tax responsibilities. Four Really Good Reasons to Invest There are four very good reasons to start investing. Do you know what they are? Where Will Your Retirement Money Come From? Retirement income may come from a variety of sources. Here's an overview of the six main sources.