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 Long-Term-Care Needs Determine your potential long-term care needs and how long your current assets might last. Bridging the Confidence Gap In the world of finance, the effects of the "confidence gap" can be especially apparent. The Anatomy of an Index The S&P 500 represents a large portion of the value of the U.S. equity market, it may be worth understanding.