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 Message Thank you! Oops! Related Content Weighing the Benefits of Prepaid Debit Cards It's important to understand the pros and cons when considering a prepaid debit card. 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. Life and Death of a Twenty Dollar Bill How long does a $20 bill last?