A Look at Systematic Withdrawals This calculator may help you estimate how long funds may last given regular withdrawals. 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 Life and Death of a Twenty Dollar Bill How long does a $20 bill last? A Taxing Story: Capital Gains and Losses Understanding how capital gains are taxed may help you refine your investment strategies. A Fruitful Retirement: Social Security Benefit Taking your Social Security benefits at the right time may help maximize your benefit.