When Do You Need a Will? When do you need a will? The answer is easy: Right Now. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content What's So Great About a Rollover? Making a career move requires tough decisions, not the least of which is what to do with the funds in your retirement plan. Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax. Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable.