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 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. Charitable Giving: Smart from the Heart Do you have causes that you want to support with donations? Taxable vs. Tax-Deferred Savings Use this calculator to compare the future value of investments with different tax consequences.