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 Why Everyone Needs an Estate Strategy Do you have an estate strategy? You should. 401(k) Plans Are Not Just for Big Businesses Many small businesses are one person businesses. Principles of Preserving Wealth How federal estate taxes work, plus estate management documents and tactics.