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 Question Thank you! Oops! Related Content Do Our Biases Affect Our Financial Choices? Even the most seasoned investors have biases affecting their financial choices. What If Your Kids Decide Against College? Rising college costs prompt students to seek alternatives; 529 account funds can be used for other education options. Self-Employed Retirement Plans Estimate the maximum contribution amount for a Self-Employed 401(k), SIMPLE IRA, or SEP.