Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax. 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 9 Facts About Social Security There are things about Social Security that might surprise you. Understanding FDIC Insurance FDIC insurance was designed to protect your deposited funds, but do you know how? This article answers that question. SECURE Act 2.0: An Overview The second iteration of the SECURE Act brings forward several changes to the world of retirement.