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. Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content Taxable vs. Tax-Deferred Savings Use this calculator to compare the future value of investments with different tax consequences. When Special Care Is Needed: The Special Needs Trust A special needs trust helps care for a special needs child when you’re gone. Strategies for Managing Student Loan Debt Five strategies for managing your student debt.