What Is My Life Expectancy? Estimate how many years you may need retirement assets or how long to provide income to a surviving spouse or children. 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 Tax Deductions You Won't Believe Here are some examples of deductions from the IRS that were permitted and some that were, uh, too creative. 3 Estate Challenges for Blended Families This article will help your clients with blended families think and prepare their estate strategy. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates.