By Clara V. · US Regulatory Counsel
In the evolving US crypto tax regime, Form 8949 is no longer a paper-trail afterthought. The IRS and Treasury established a staged rollout for digital asset reporting that realigns how traders, earners, and brokers report crypto dispositions. For 2025 tax year filings, brokers will issue 1099-DA statements reporting gross proceeds from digital asset sales, but basis information remains largely non-mandatory. By 2026, brokers must report gross proceeds for 2025 sales, and starting in 2027 they will begin reporting basis for covered securities—reflecting a broader push to mirror traditional securities reporting in the digital asset space. These shifts create a more formal bridge between on-chain activity and how traders calculate gains on Form 8949 and Schedule D.
In this framework, Form 8949 remains the cash ledger for crypto sales, but the instructions now steer digital asset transactions into specific reporting paths. The 2025 Form 8949 instructions explicitly state that digital asset transactions should not be reported using Box C. Instead, box I is the designated category for digital asset sales that lack a Form 1099-B or 1099-DA, and Box B/H handles certain 1099-B/1099-DA scenarios. The instruction text also notes that if you receive a 1099-B or 1099-DA, the “Applicable checkbox on Form 8949” helps determine the correct box, while the Digital Asset guidance cautions that many 2025 transactions will arrive with basis information that is incomplete or not reported at all. This setup means many US traders will need to carry their own cost basis records and report gains and losses on Schedule D, rather than relying on broker-supplied basis data for 2025.
Macro context matters. The crypto market in 2025 saw a broad uptick in on-chain activity, with total daily transactions in the Ethereum ecosystem rising sharply as DeFi use and stablecoins expanded. CoinGecko’s 2025 Crypto Industry Report notes that average daily transactions in the EVM space climbed from 32.9 million in Q1 to 62.6 million in Q4 2025, and Ethereum ranked among the top networks with hundreds of millions of total transactions for the year. Ethereum’s own daily activity reached new highs in 2025 as stablecoins and ETH treasuries boosted utilization. These on-chain dynamics amplify the importance of accurate Form 8949 reporting, since more daily activity translates into more dispositions that taxpayers may need to account for on their returns.
Macro Context & On-Chain MetricsOn-chain activity: The 2025 CoinGecko Crypto Industry Report shows the EVM ecosystem’s average daily transactions nearly doubling across the year, from 32.9 million in Q1 to 62.6 million in Q4 2025. This surge aligns with higher trading volumes across centralized and non-custodial channels and underscores why regulators want improved visibility into cost basis and proceeds on returns. Ethereum’s daily cadence: The Block reported that Ethereum’s daily transactions reached all-time highs in 2025 as DeFi, stablecoins, and NFT-related activity accelerated, suggesting traders faced greater frequency of dispositions that could feed into Form 8949 reconciliations. 2025 activity snapshot: CoinGecko’s 2025 Bitcoin and broader crypto reports indicate sustained on-chain activity across the major networks, reinforcing the reality that a growing share of US traders’ activity will flow through broker reporting mechanisms like 1099-DA and the Form 8949 workflow. Technical Decoding & NuanceThe 1099-DA rollout changes the disclosures brokers must provide. For 2025 sales, brokers must file Form 1099-DA, reporting gross proceeds for digital asset dispositions, but they are not required to report basis information. This means many US traders will still need to compute gains and losses themselves on Form 8949, unless a broker voluntarily reports basis information. The 2025 IRS 1099-DA instructions make clear that basis reporting becomes mandatory only for sales effective in 2026 (and only for covered securities), with voluntary reporting for noncovered securities possible in 2026 and beyond. This two-year lag creates an interim path where 8949-compliant reporting remains essential for most filers. 8949 box navigation for digital assets: The 2025 Form 8949 Instructions specify that digital asset transactions should not be reported using Box C. Instead, Box I is the designated box for digital asset transactions where no 1099-B/1099-DA is received (or where you can’t classify the transaction under other boxes). The instructions also show how to align 1099-B/1099-DA-reported transactions with Box A/B (basis reported) or Box B/H (no basis reported) as applicable. This nuance will require traders to track whether their broker provided basis information and to reflect any adjustments on Schedule D as applicable. Box Y coding and basis reporting: The Form 1099-DA guidance indicates that if a broker does not report basis information for 2025 sales, they may use code Y in the Applicable checkbox on Form 8949 to reflect the lack of basis reporting. This coding convention is part of a transitional regime designed to minimize penalties while the IRS and Treasury build out full basis-tracking capabilities for all digital assets in the future. The 2026–2027 basis rollout: The Treasury press release on the final regulations confirms the staged approach: gross proceeds reporting begins in 2026 for 2025 sales, and basis reporting for covered securities begins in 2027 for 2026 sales. This timeline clarifies the long arc of digital asset reporting and the ultimate objective of parity with traditional securities reporting on Form 8949 and related schedules. Implications for US TradersFiling load and compliance posture: 2025 will be a transitional year where brokers provide 1099-DA with gross proceeds while traders reconcile gains and losses on Form 8949 without a full basis picture from brokers. Trainees and seasoned traders alike should maintain meticulous transaction logs, wallet addresses, and acquisition dates to ensure accurate cost-basis computation for 2025 dispositions. Planning for 2026–2027: As basis-tracking obligations begin to crystallize for covered digital assets in 2026 and 2027, traders should anticipate more complete broker data for tax years beyond 2025. Tax professionals will likely shift toward hybrid methods that combine 1099-DA data with robust taxpayer-held records to ensure accurate reporting on Form 8949 and Schedule D, particularly for traders with cross-broker activity or self-custodied wallets. Two Perspectives in PlayPro-regulatory: Supporters argue that the 1099-DA framework, even if imperfect in 2025, will improve tax transparency, reduce the underreporting of crypto gains, and bring digital asset taxation more in line with traditional financial reporting. The June 2024 final regulations emphasize that gross-proceeds reporting and eventual basis reporting will aid taxpayers and the IRS in reconciling digital asset transactions with tax returns. Critiques: Critics warn that 2025’s lack of mandatory basis data in 1099-DA can create filing uncertainty for ordinary traders, particularly those who move assets across wallets or exchanges. They also point to the complexity of DeFi staking, yield, and non-custodial activity, which may not neatly map onto the 1099-DA framework until 2027. The ongoing evolution of the reporting regime—from 1099-DA to Form 8949 disclosures—will require ongoing education for taxpayers and tax professionals alike. In short, the IRS’s Form 8949 playbook for crypto dispositions is entering a period of transition. For 2025 taxes, the 1099-DA regime will provide gross-proceeds data, but cost basis remains largely a trader’s responsibility. By 2026–2027, the framework aims for broader basis reporting, tighter broker data, and a Form 8949 reporting experience that more closely mirrors the taxation of traditional securities. Traders should stay current with IRS notices, guidance, and the evolving 1099-DA instructions to ensure compliance and minimize penalties.
SOURCES & Factual References
U.S. Department of the Treasury, IRS Release Final Regulations Implementing Bipartisan Tax Reporting Requirements for Sales and Exchanges of Digital Assets (June 28, 2024). https://home.treasury.gov/news/press-releases/jy2438Instructions for Form 8949 (2025) - Internal Revenue Service. https://www.irs.gov/instructions/i8949Understanding Form 1099-DA - Internal Revenue Service. https://www.irs.gov/businesses/understanding-your-form-1099-daDigital assets (IRS) - https://www.irs.gov/filing/digital-assets2025 Instructions for Form 1099-DA (IRS) - https://www.irs.gov/pub/irs-prior/i1099da--2025.pdfInternal Revenue Bulletin: 2024-31 (IRS) - https://www.irs.gov/irb/2024-31_irb2025 DeFi Tax & 1099-DA guidance (CoinGecko 2025 Crypto Industry Report) - https://assets.coingecko.com/reports/2025/CoinGecko-2025-Annual-Crypto-Industry-Report.pdfEthereum on-chain metrics (The Block) - https://www.theblock.co/data/on-chain-metrics/ethereum/transactions-on-the-ethereum-network-dailyCoinGecko 2025 Bitcoin Report (Active Addresses & On-Chain Metrics) - https://www.coingecko.com/research/publications/bitcoin-report-2025Note: The article’s macro-on-chain figures reflect the latest public reports as of 2025 and 2026; figures are subject to update as new data releases occur.
Further Reading
MiCA's Impact on US-Facing Stablecoin Issuers: An In-Depth Learning Guide
Understanding State-Level Money Transmitter Licensing: An In-Depth Learning Guide