Verified Formula, Methodology & Frequently Asked Questions: Short-Term vs Long-Term Capital Gains Tax Calculator (2026)
Calculate federal (0%, 15%, 20% + 3.8% NIIT) and state capital gains taxes on stocks, crypto, or real estate—and see savings from holding >1 year.
Verified Mathematical Equation: Taxable Gain = Sale Proceeds − Cost Basis; Long-Term Rate (0%/15%/20%) applies when held > 365 days
Frequently Asked Questions (FAQ)
How does the Short-Term vs Long-Term Capital Gains Tax Calculator (2026) work in 2026?
Calculate federal (0%, 15%, 20% + 3.8% NIIT) and state capital gains taxes on stocks, crypto, or real estate—and see savings from holding >1 year. It uses the industry-standard formula (
Taxable Gain = Sale Proceeds − Cost Basis; Long-Term Rate (0%/15%/20%) applies when held > 365 days) and updates your KPIs, visual breakdown bar, and comparison table at 60fps as you type or drag the sliders.How can I share my exact scenario with a client, partner, or spouse?
Click the 🔗 Share Scenario Link button at the top of the page. It encodes every input you entered directly into a custom URL so anyone who clicks your link sees your exact numbers immediately.
Is my financial data private and does this work offline?
Yes—100% of calculations happen locally inside your browser using JavaScript. No personal or financial inputs are ever transmitted to an external database.
Can I embed the Short-Term vs Long-Term Capital Gains Tax Calculator (2026) on my own website or client portal?
Yes! Click </> Embed on Your Site (Free) above to copy a clean, responsive
<iframe> widget that automatically adapts to any screen size.