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 Alternative Investments - Going Mainstream Alternative investments are going mainstream for accredited investors. It’s critical to sort through the complexity. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. The Financial Literacy Crisis Many Americans are operating their personal finances with only the barest minimum of knowledge.