This Capital Gains Tax Estimator helps you calculate how much tax you may owe when selling investments such as stocks, ETFs, mutual funds, real estate, or other capital assets. By entering your purchase price, sale price, holding period, and tax rate, the calculator instantly determines your capital gain and whether it qualifies as short‑term or long‑term. Short‑term gains are typically taxed at ordinary income tax rates, while long‑term gains often benefit from reduced tax rates. This tool makes it easy to compare different selling scenarios, estimate your after‑tax profit, and plan investment decisions more effectively. It’s especially useful for investors who want to understand the tax impact of selling assets, evaluate timing strategies, or optimize their portfolio for tax efficiency. All calculations run directly in your browser, ensuring complete privacy with no data stored or shared. With a clean, modern interface and instant results, this Capital Gains Tax Estimator is ideal for both beginner and experienced investors who want a simple, accurate way to estimate potential tax liabilities and net returns.