US Crypto Tax Guide 2026: What Changed and How to Prepare

If you bought, sold, or received Bitcoin in 2025, you have a tax obligation to the IRS. That much has not changed. What has changed is the reporting infrastructure around you. Starting with the 2025 tax year, centralized exchanges and brokers are required to issue Form 1099-DA to both you and the IRS, reporting your digital asset transactions. The era of voluntary self-reporting is effectively over. This guide covers what US-based Bitcoin holders need to know for the 2026 filing season — and what to prepare for going forward. For foundational concepts (cost basis, taxable events, record-keeping), see our general Bitcoin tax guide.

What Changed: The New Reporting Regime

The Infrastructure Investment and Jobs Act of 2021 expanded the definition of “broker” to include cryptocurrency exchanges and certain other intermediaries. After years of rulemaking, the IRS finalized regulations requiring these brokers to report digital asset transactions on Form 1099-DA beginning with the 2025 tax year.

What this means in practice:

Exchanges report to the IRS. Coinbase, Kraken, Gemini, and other US-regulated exchanges now send detailed transaction reports directly to the IRS. This includes proceeds from sales, the date of each transaction, and — where available — your cost basis.

Cost basis may be incomplete. If you transferred Bitcoin to an exchange from a personal wallet or another exchange, the receiving exchange may not know what you originally paid. In these cases, the 1099-DA may report proceeds but not cost basis, potentially overstating your gains. You are responsible for providing accurate cost basis on your return.

The digital asset question remains. Form 1040 continues to ask: “At any time during 2025, did you receive, sell, send, exchange, or otherwise acquire any digital assets?” Answering “No” when you should answer “Yes” is a federal offense.

Tax Structure: The Essentials

Short-term gains (assets held one year or less): Taxed as ordinary income at your marginal rate — 10% to 37% depending on your bracket.

Long-term gains (assets held more than one year): Preferential rates of 0%, 15%, or 20%. Most filers fall into the 15% bracket. The 0% rate applies to single filers with taxable income under approximately $48,000 (2025 figures, adjusted annually for inflation).

Cost basis methods: FIFO is the IRS default. Specific identification is permitted if you maintain adequate records — meaning you can demonstrate exactly which lot you sold. This gives you significant control over your tax liability.

Net Investment Income Tax (NIIT): An additional 3.8% surtax applies to investment income (including crypto gains) for single filers with modified AGI above $200,000 or married filing jointly above $250,000.

The Wash Sale Question

As of the 2025 tax year, the IRS wash sale rule (which prevents claiming a loss if you repurchase a substantially identical security within 30 days) does not apply to cryptocurrency. Bitcoin is classified as property, not a security.

This means you can sell Bitcoin at a loss, immediately repurchase, and still claim the tax loss. This is a powerful tool for tax-loss harvesting that is not available to stock investors.

However, legislation to extend wash sale rules to digital assets has been repeatedly proposed. It may be enacted in the near future. Use this strategy while it remains available, but do not assume it will last forever.

Practical Strategies for 2026

Harvest losses before year-end. If you hold any Bitcoin lots purchased at higher prices than the current market, consider selling to realize losses that offset gains elsewhere in your portfolio. Since wash sale rules do not yet apply, you can repurchase immediately.

Use specific identification. If you have purchased Bitcoin at multiple prices over time, selecting which lot to sell can dramatically change your tax bill. Selling your highest-cost lot minimizes gains. This requires meticulous records of each purchase — date, amount, price, and fees.

Hold for long-term rates. The difference between short-term (up to 37%) and long-term (typically 15%) rates is substantial. If you are considering selling Bitcoin purchased less than a year ago, the tax savings from waiting can be significant.

Maximize retirement accounts. Some IRA custodians now allow Bitcoin holdings. Gains within a traditional IRA are tax-deferred; within a Roth IRA, potentially tax-free. This is a complex area — consult a tax professional.

Gift strategically. In 2025, you can gift up to $18,000 per recipient annually without triggering gift tax reporting. Gifting appreciated Bitcoin to family members in lower tax brackets can reduce the overall family tax burden.

Self-Custody and Record-Keeping

If you hold Bitcoin in a personal wallet (hardware wallet, mobile wallet), exchanges cannot report your transactions. You are solely responsible for tracking:

1. Every acquisition: Date, amount in USD, quantity of BTC, fees paid
2. Every disposition: Date, proceeds in USD, quantity of BTC, fees paid
3. Wallet-to-wallet transfers: Document that both wallets are yours (not a sale)
4. Cost basis for each lot: Maintain a running ledger

If you cannot prove cost basis, the IRS may treat it as zero — meaning your entire sale proceeds become taxable gain. Export exchange history regularly. Exchanges can shut down, get hacked, or change data retention policies. Download now.

Tools like CoinTracker, Koinly, and TaxBit can import exchange data and generate tax forms. For small portfolios, a well-maintained spreadsheet works.

Foreign Account Reporting

If you hold Bitcoin on foreign exchanges (Binance, Bybit, OKX, etc.) and the aggregate value exceeds $10,000 at any point during the year, you may need to file an FBAR (FinCEN Form 114). Separately, FATCA reporting (Form 8938) may apply if your foreign financial assets exceed $50,000 (single) or $100,000 (married filing jointly) at year-end.

Whether self-custody wallets trigger these requirements is legally ambiguous. FinCEN has signaled intent to include them, but as of 2026, no final rule has been issued. Keep records regardless.

What This Means for Bitcoin

Taxation is neither an endorsement nor an attack — it is recognition. When the IRS builds infrastructure to track Bitcoin transactions, it is implicitly acknowledging Bitcoin as a permanent feature of the financial landscape. Institutional adoption, ETF approval, and now comprehensive tax reporting form a consistent pattern: Bitcoin is being absorbed into the system it was designed to exist alongside.

Your job is to understand the rules, comply with them, and optimize within legal boundaries. The general tax guide covers foundational principles. This guide addresses the current moment. Both will need updating as the landscape evolves.

Disclaimer

This article is for educational purposes only and does not constitute tax, financial, or legal advice. Tax laws change frequently. Consult a qualified tax professional familiar with cryptocurrency taxation before making any tax-related decisions.