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 The Half Million Dollar Baby The true cost of raising a child may be far more than you expect. Annuity Comparison This calculator compares a hypothetical fixed annuity with an account where the interest is taxed each year. Systematic Withdrawals in Retirement Taking regular, periodic withdrawals during retirement can be quite problematic.