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 Cost of Procrastination Don't let procrastination keep you from pursuing your financial dreams and goals. When Do You Need a Will? When do you need a will? The answer is easy: Right Now. What Smart Investors Know Savvy investors take the time to separate emotion from fact.