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. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content 401(k) Plans Are Not Just for Big Businesses Many small businesses are one person businesses. Personal Finance Tips for Military Families Military families face unique challenges, making personal finance even more critical. Be My Beneficiary Financial planning for couples.