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 Tuning Your Social Security Benefit When should you take your Social Security benefit? Social Security Benefits: How Much Will I Receive Calculating your potential Social Security benefit is a three-step process. Retirement Plan Distributions There are a number of ways to withdraw money from a qualified retirement plan.