Bitcoin Capital Gains Tax Calculator
Calculate your Bitcoin capital gains tax liability with professional accuracy. Federal and state tax support with comprehensive optimization insights.
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UK Bitcoin Capital Gains Tax Calculator 2025/26
This UK Bitcoin capital gains tax calculator uses HMRC's current CGT rates for the 2025/26 tax year. UK taxpayers pay 18% CGT on crypto gains if they are basic rate taxpayers, or 24% if they are higher rate taxpayers. The first £3,000 of gains each tax year is covered by the annual CGT allowance and is tax-free. Unlike the US, the UK does not distinguish between short-term and long-term gains — the same rates apply regardless of how long you held Bitcoin.
How Bitcoin Is Taxed in the US (2026 Rules)
The IRS treats Bitcoin as property, not currency. That single classification drives everything: every sale, swap, or purchase made with BTC is a taxable event, and the gain (or loss) gets reported on Form 8949 and Schedule D. For 2026, the same framework applies, but bracket thresholds shift slightly to keep pace with inflation.
Three flavors of tax can hit a Bitcoin sale at once: federal capital gains tax, state income or capital gains tax, and the 3.8% Net Investment Income Tax (NIIT) for higher earners. Stack those on top of a short-term sale and the effective rate can climb above 50% in high-tax states like California. Holding past the one-year mark cuts that bill dramatically.
Need help quantifying the damage before you sell? Our Bitcoin Profit/Loss Calculator shows realized gains, and the full picture pairs nicely with our Bitcoin tax guide for a deeper read.
Federal Long-Term Capital Gains Brackets 2026
Long-term gains (BTC held over 365 days) qualify for preferential rates. Here's how 2026 thresholds break down by filing status.
| Rate | Single | Married Filing Jointly | Head of Household |
|---|---|---|---|
| 0% | Up to $48,350 | Up to $96,700 | Up to $64,750 |
| 15% | $48,351 – $533,400 | $96,701 – $600,050 | $64,751 – $566,700 |
| 20% | Over $533,400 | Over $600,050 | Over $566,700 |
Short-term gains (held under one year) are taxed at ordinary income rates, which top out at 37% for 2026. The spread between short and long-term treatment is often the single biggest variable in your tax bill.
State-by-State Bitcoin Tax Comparison
Where you file matters as much as how long you held. These ten states span the full spectrum, from zero state tax to over 13% on top earners.
| State | Top Capital Gains Rate | Treatment |
|---|---|---|
| California | 13.3% | Taxed as ordinary income |
| New York | 10.9% | Taxed as ordinary income |
| New Jersey | 10.75% | Taxed as ordinary income |
| Oregon | 9.9% | Taxed as ordinary income |
| Massachusetts | 9.0% | Higher rate on short-term gains |
| Washington | 7.0% | Only on gains over $270K |
| Texas | 0% | No state income tax |
| Florida | 0% | No state income tax |
| Tennessee | 0% | No state income tax |
| Wyoming | 0% | No state income tax |
Nine states impose no personal income tax on capital gains: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington (with the high-income exception), and Wyoming. For Bitcoin holders sitting on large gains, residency planning is a real lever.
Short-Term vs Long-Term: The 365-Day Rule
The IRS clock starts the day after you acquire Bitcoin and includes the day you sell. Hold for 366 days or more and you qualify for long-term treatment. Sell on day 365 and the entire gain gets taxed at your ordinary income rate, which for top earners is 22 percentage points higher than the 15% long-term rate.
On a $50,000 gain, that timing difference can mean the difference between writing a $7,500 check (long-term, 15%) and one for $18,500 (short-term, 37%). Before you click sell, check the acquisition date on every lot. Our HODL Strategy Calculator models the math of waiting.
Tax-Loss Harvesting With Bitcoin
Here's where crypto still has an edge over stocks: the wash sale rule does not technically apply to Bitcoin under current IRS guidance. That means you can sell a losing BTC lot to lock in the capital loss, then buy back the same coins minutes later. The loss is real and deductible.
Up to $3,000 of net capital losses can offset ordinary income each year, and excess losses carry forward indefinitely. A trader who realized $20,000 in losses can offset $20,000 of future Bitcoin gains, then keep using $3,000 per year against W-2 wages until the well runs dry. Congress has floated closing this loophole for years, but as of 2026 it remains open. Track your cost basis carefully with our Portfolio Tracker.
How Our Bitcoin Tax Calculator Works
Professional-grade tax calculations with federal and state support, comprehensive optimization insights, and audit-ready reports
Configure Tax Settings
Set your filing status, annual income, tax year, and state to ensure accurate tax calculations based on your specific situation.
- Multiple filing status options
- Current tax year brackets
- State and federal tax support
- Cost basis method selection
Add Bitcoin Transactions
Input all your Bitcoin transactions including purchases, sales, trades, mining, and staking. Our system automatically calculates gains and losses.
- Buy, sell, trade, and mining transactions
- Automatic fair market value calculation
- Transaction fees tracking
- CSV import for bulk data
Calculate Tax Liability
Generate comprehensive tax calculations with federal, state, and NIIT taxes. Get detailed breakdowns of short-term vs long-term gains.
- FIFO, LIFO, and Specific ID cost basis
- Short-term vs long-term classification
- Net Investment Income Tax (NIIT)
- Wash sale detection
Review & Optimize
Analyze tax optimization opportunities and get professional recommendations for better tax planning strategies.
- Tax-loss harvesting suggestions
- Holding period optimization
- Professional tax reports
- Audit-ready documentation
Professional Tax Disclaimer
This calculator provides professional-grade estimates for planning purposes only. Tax laws are complex and vary by jurisdiction, income level, and individual circumstances. Always consult with a qualified tax professional or CPA for official tax advice and return preparation. The creators of this tool are not responsible for any tax-related decisions made based on these calculations.
Frequently Asked Questions
Common questions about Bitcoin capital gains taxation and our calculator.
Learn More
Bitcoin Tax Guide: Capital Gains Explained
Understand short-term vs long-term rates and how to calculate your crypto tax liability
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Disclaimer
This tax calculator is for educational and estimation purposes only. Tax laws are complex and subject to change. Results do not account for all possible tax scenarios, deductions, or credits. Always consult with a qualified tax professional or CPA for personalized tax advice and official tax filing preparation.