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 9 Facts About Social Security There are things about Social Security that might surprise you. When Special Care Is Needed: The Special Needs Trust A special needs trust helps care for a special needs child when you’re gone. Putting a Price Tag On Your Health Being healthy not only makes you feel good, it may also help you financially.