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 A Fruitful Retirement: Social Security Benefit Taking your Social Security benefits at the right time may help maximize your benefit. Financial Aid for Students 101 Help your college-bound child explore scholarships, grants, and more with this article on paying for higher education. Life and Death of a Twenty Dollar Bill How long does a $20 bill last?