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 Infographic: Cash for Life? Lottery Isn’t the Only Way Guaranteed income can safeguard against running out of money. The Pros and Cons of Banking Your Money The Pros and Cons of Banking Your Money Financial Hacks for Millennials: Starting a Business The major challenge “millenipreneurs" face is cash flow issues. Here are tips that can help position themselves for success.