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 Question Thank you! Oops! Related Content The Financial Literacy Crisis Many Americans are operating their personal finances with only the barest minimum of knowledge. Your Emergency Fund: How Much Is Enough? Having an emergency fund may help alleviate the stress and worry associated with a financial crisis. My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates.