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 Historical Inflation This calculator shows how inflation over the years has impacted purchasing power. Bull and Bear Go To Market Learn about the difference between bulls and bears—markets, that is! Required Reading: The Economic Report of the President The Economic Report of the President can help identify the forces driving — or dragging — the economy.