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 Saving for Retirement This calculator can help you estimate how much you may need to save for retirement. Historical Inflation This calculator shows how inflation over the years has impacted purchasing power. The Long Run: Women and Retirement For women, retirement strategy is a long race. It’s helpful to know the route.