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 Where Will Your Retirement Money Come From? Retirement income may come from a variety of sources. Here's an overview of the six main sources. The Facts About Income Tax Millions faithfully file their 1040 forms each April. But some things about federal income taxes may surprise you. Putting a Price Tag On Your Health Being healthy not only makes you feel good, it may also help you financially.