My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | 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. Filing Final Tax Returns for the Deceased The federal government requires deceased individuals to file a final income tax return. When Do You Need a Will? When do you need a will? The answer is easy: Right Now.