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 Retirement Redefined Around the country, attitudes about retirement are shifting. Certain Uncertainties in Retirement The uncertainties we face in retirement can erode our sense of confidence. Annuity Comparison This calculator compares a hypothetical fixed annuity with an account where the interest is taxed each year.