Treasury and IRS Finalize Broker Reporting Rules That Tighten Bitcoin Tax Compliance

The envelope arrived in January with the understated urgency that government documents carry. Inside was my first Form 1099-DA from the exchange where I had sold some Bitcoin the previous year. The form listed gross proceeds, cost basis, and the gain I would need to report. What struck me was not the number itself, but the quiet finality of it—the idea that a decade of Bitcoin existing in a kind of regulatory twilight was ending, replaced by something that looked increasingly like traditional brokerage reporting.

This is the reality that millions of Bitcoin holders will face starting in 2026. The Treasury Department and IRS have finalized broker reporting regulations that will require custodial platforms to report digital asset sales and exchanges using the new Form 1099-DA. The rules phase in over two years, with gross proceeds reporting beginning for 2025 transactions and cost basis reporting following for 2026 transactions.

Key Metrics at a Glance

What the Final Rules Require

The regulations implement changes to Internal Revenue Code §6045 made by the Infrastructure Investment and Jobs Act of 2021. For years, the crypto industry operated under a patchwork of guidance and voluntary reporting while lawmakers debated whether digital assets should be treated as property, securities, or something else entirely.

The final rules settle that question in practical terms: custodial brokers must now report digital asset transactions with the same rigor as traditional securities brokers. This includes operators of custodial trading platforms, certain hosted wallet providers, digital asset kiosks, and certain payment processors.

Starting January 1, 2025, these brokers must report gross proceeds from sales and exchanges. Beginning January 1, 2026, they must also report cost basis information—the original purchase price that determines taxable gain or loss. For taxpayers, this means the days of self-calculating Bitcoin basis across multiple exchanges and wallets are ending.

The Compliance Framework: Who Reports What

The regulations create a tiered compliance structure that distinguishes between custodial and non-custodial actors:

This distinction matters for Bitcoin holders who have moved toward self-custody solutions. The regulations explicitly exclude decentralized and non-custodial brokers that do not take possession of digital assets. If you hold your own keys, these reporting requirements do not apply to you—though your tax obligations remain unchanged.

Penalty Relief and Transitional Period

The IRS has provided penalty relief for the initial implementation period. For calendar year 2025, the agency will not impose penalties for failure to file and furnish Forms 1099-DA if the broker makes a good faith effort to file correctly and on time.

This relief extends to backup withholding for transactions in 2025 and for 2026 transactions where the broker obtains the customer's Taxpayer Identification Number and receives a matching response from the IRS TIN-matching program.

The Strategic Implications

These regulations represent more than administrative housekeeping. They signal the integration of Bitcoin into the mainstream tax infrastructure—and the end of an era where crypto transactions could exist in reporting gray zones.

For compliant taxpayers, the change is arguably beneficial. The IRS estimates that third-party reporting improves compliance rates by over 40 percentage points compared to self-reporting. Taxpayers will receive reliable basis information from brokers rather than relying on expensive tax calculation services or manual spreadsheet tracking.

For the industry, the compliance burden falls heaviest on custodial platforms. These entities must now maintain systems capable of tracking cost basis across multiple acquisition methods, handling wash sale rule complexities, and generating accurate 1099-DA forms.

What to Watch

Several questions remain as implementation approaches:

• Non-custodial exclusion: The regulations exclude decentralized exchanges and non-custodial platforms, but the line between custodial and non-custodial can blur with sophisticated wallet designs. Future guidance may clarify edge cases.

• Hard fork and airdrop basis: The regulations address basis for acquired digital assets but leave some ambiguity around events like hard forks and airdrops where the "purchase price" is unclear.

• International coordination: The U.S. approach to broker reporting may influence how other jurisdictions treat Bitcoin tax compliance, potentially creating harmonized reporting standards—or regulatory arbitrage opportunities.

• Enforcement capacity: The IRS must process millions of new 1099-DA forms starting in 2026. Whether the agency has adequate resources to analyze this data and pursue underreporting remains an open question.

TL;DR

• What: Treasury and IRS finalized broker reporting rules requiring Form 1099-DA for digital asset transactions starting 2025
• Why: Infrastructure Investment and Jobs Act mandated reporting to improve tax compliance
• Impact: Custodial platforms must report gross proceeds (2025) and cost basis (2026); taxpayers receive standardized reporting
• Exclusions: Non-custodial brokers and self-custody holders are not subject to reporting requirements
• Penalty Relief: Good faith compliance efforts protected for 2025; backup withholding phases in gradually
• Compliance Advantage: Third-party reporting eliminates manual basis tracking for compliant taxpayers

Sources

• Treasury Department Press Release: Final Broker Reporting Regulations
• IRS: Final Regulations and Related Guidance for Reporting by Brokers
• IRS Instructions for Form 1099-DA (2026)
• Federal Register: Gross Proceeds and Basis Reporting Final Rule

Filip Peshko is Senior Opinion Columnist & Blockchain Technology Analyst at TotesTek. He writes about Bitcoin, blockchain technology, crypto markets, Web3 infrastructure, digital asset custody, institutional adoption, and legislation affecting the crypto industry.