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 Question Thank you! Oops! Related Content Bi-Weekly Payments This calculator estimates the savings from paying a mortgage bi-weekly instead of monthly. Does Your Child Need to File an Income Tax Return? When your child has income, there’s a good chance that he or she will need to report it and pay taxes. Silver Sneakers 101 Medicare’s popular program, offering free gym membership and health education.