Crypto ProfitCalculator

How the IRS Taxes Cryptocurrency Profits

IRS Notice 2014-21 established the foundational rule that still governs crypto taxation today: virtual currency is treated as property, not currency. That single classification has enormous consequences. Every time you sell, trade, or use cryptocurrency to purchase goods, you trigger a taxable event and must report a capital gain or loss. The character of that gain (short-term or long-term) depends entirely on how long you held the asset before disposing of it. Assets held for one year or less are taxed as ordinary income at your marginal rate, which in 2026 can reach 37%. Assets held longer than one year qualify for the preferential long-term capital gains rates, which are substantially lower for most taxpayers.

For 2026, per IRS Rev. Proc. 2025-32, the long-term capital gains brackets are: 0% for single filers with taxable income up to $48,350; 15% for income between $48,351 and $533,400; and 20% for income above $533,400. High earners may additionally owe the 3.8% Net Investment Income Tax (NIIT) on crypto gains if modified adjusted gross income exceeds $200,000 (single) or $250,000 (married filing jointly), effectively pushing the top marginal rate on long-term crypto gains to 23.8%.

The Wash-Sale Rule, Cost Basis Methods, and Form 8949

Prior to 2025, crypto's classification as property, rather than a “stock or security,” meant the wash-sale rule under IRC §1091 did not apply. Investors could sell Bitcoin at a loss, immediately repurchase it, and still claim the tax loss, a strategy known as tax-loss harvesting. That advantage was eliminated for tax years beginning in 2025 following Treasury guidance implementing the Infrastructure Investment and Jobs Act. Today, selling a digital asset at a loss and reacquiring a substantially identical asset within the 30-day window before or after the sale disallows the loss for tax purposes, mirroring the rules that have long applied to equities.

Your cost basis method determines which acquisition lots are matched against sales, directly affecting the size of your gain or loss. The IRS permits several approaches: FIFO (First In, First Out) assumes the oldest coins are sold first and tends to produce larger long-term gains in rising markets; HIFO (Highest In, First Out) matches sales against the highest-cost lots first, minimizing recognized gains and is generally the most tax-efficient method; and specific identification lets you designate which exact lot you are selling, offering the most granular control. All capital gains and losses from crypto disposals must be reported on IRS Form 8949 and carried to Schedule D. Exchanges are now required to issue Form 1099-DA starting with the 2025 tax year, but keeping your own records remains essential.

Planning Around Crypto Taxes to Maximize After-Tax Returns

Effective crypto tax planning goes beyond simply calculating your gain. Timing matters: if you're within a few weeks of the one-year holding threshold, waiting can shift a short-term gain taxed at up to 37% into a long-term gain taxed at as little as 0% for taxpayers in the lower brackets. Stacking capital losses from other positions against crypto gains in the same tax year reduces your net liability. Donating appreciated crypto directly to a qualified charity allows you to deduct the fair market value and avoid recognizing the gain entirely, which is a powerful strategy for positions with large embedded gains. For a detailed breakdown of how these rules interact with your overall income picture, read our guide on crypto taxation and capital gains rules. Understanding the after-tax return on any trade (not just the gross profit this calculator shows) is what separates disciplined investors from those who are surprised at tax time.