Long-Term-Care Needs Determine your potential long-term care needs and how long your current assets might last. 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 Deciding When to Take Social Security One of the most common questions people ask about Social Security is when they should start taking benefits. A Look at Systematic Withdrawals This calculator may help you estimate how long funds may last given regular withdrawals. The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out.