A Look at Systematic Withdrawals This calculator may help you estimate how long funds may last given regular withdrawals. 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 Social Security Benefits: How Much Will I Receive Calculating your potential Social Security benefit is a three-step process. Can I Refinance My Mortgage? This calculator can help determine whether it makes sense to refinance your mortgage. White Elephant Inheritance This article deals with how one might deal with a burdensome inheritance.