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 Why Regular Rebalancing Makes Sense Without your knowing, your investment portfolio could be off-kilter. Conquering Retirement Challenges for Women Looking ahead can help you conquer these unique obstacles. Social Security: Five Facts You Need to Know Here are five facts about Social Security that are important to keep in mind.