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 Historical Inflation This calculator shows how inflation over the years has impacted purchasing power. LGBTQ Proud LGBTQ people are subject to unique stresses that affect how they feel about their financial future. Tax-Advantaged Retirement Planning Reduce your tax liability in retirement.