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 Should You Borrow from Your 401(k)? Does it make sense to borrow from my 401(k) to pay off debt or to make a major purchase? Estate Management 101 A will may be only one of the documents you need—and one factor to consider—when it comes to managing your estate. A House Divided By understanding a few key concepts during a divorce, you may be able to avoid common pitfalls.