Why Early-Phase Reporting Creates Risk
Form 1099-DA reports gross proceeds from digital asset sales and other dispositions (including exchanges) that a broker effects for a customer. IRS instructions explain who counts as a broker, what constitutes a digital asset, and which sales or trades must be reported. The form reports gross proceeds for each reported sale or exchange, and brokers must furnish the payee statement by the IRS deadline, which falls on February 17, 2026 for 2025 transactions. A key risk driver sits in the rollout design.
For transactions a broker effects in 2025, the IRS instructions require gross proceeds reporting and do not require basis reporting for sales a broker effects in 2025, although a broker may voluntarily report basis information. That combination creates a predictable audit pressure point: the IRS can see the proceeds, but it may not see your basis on the broker form. If you cannot prove the basis with records, the IRS can treat much or all of the proceeds as gain, and the mismatch can become the reason the IRS selects the return for additional scrutiny.
How Form 1099-DA Feeds Matching Programs and Exam Selection
The IRS selects returns for review in several ways, and automated information matching and discrepancy filters commonly drive IRS follow-up because the IRS can compare third-party reports against what the return reports.
In practice, Form 1099-DA creates three common exam-selection pathways:
Underreporting Signals
Your return omits a disposition the broker reports, or your totals do not reconcile to the broker’s proceeds data.
You claim little or no gain on large sales without records that show when and how you got the assets, and what you paid for them.
Credibility Escalation
Your explanation conflicts with objective platform records, such as timestamps, account metadata, deposit and withdrawal logs, or linked banking trail. When the IRS detects repeatable patterns, it often escalates by testing adjacent years and related entities. This progression may begin as a civil inquiry but can result in a highly worrying criminal tax investigation if the record suggests willfulness, fabricated support, or false statements, particularly when multiple platforms, wallets, or pass-through entities are involved.
Where Taxpayers Commonly Create 1099-DA Mismatches
Most 1099-DA problems stem from reconciliation failures, not from a single “bad” transaction. These are the patterns that most often convert Form 1099-DA reporting into audit-selection risk:
Multi-Platform Fragmentation
You acquire assets on one exchange, move them through wallets or other platforms, and later dispose of them on a different platform, but you never link lots, dates, and USD values well enough to support basis and holding period.
Non-Purchase Acquisitions Without Valuation Support
You received assets from services, staking rewards, airdrops, or other transfers, but you lack defensible records showing fair market value and the basis you should carry forward.
Proceeds-Only Reporting in the Rollout Year
The broker reports proceeds for 2025 dispositions, and you report a basis-driven position that you cannot substantiate when the IRS asks for records.
Return-Position Contradictions
You answer the digital asset question incorrectly or describe activity inconsistently with what broker records later show, which converts a reporting gap into an intent issue.
California state tax exposure generally taxes capital gains at the same rates as other income for individuals, and the Franchise Tax Board can pursue civil enforcement and, where appropriate, criminal tax enforcement through its criminal investigation function.
Contact the Tax Law Offices of David W. Klasing if Form 1099-DA Reporting Has Increased Your Crypto Audit Risk
Form 1099-DA reporting gives the IRS a direct proceeds feed from custodial digital asset brokers for transactions occurring on or after January 1, 2025, which makes it harder for taxpayers to “blend” exchange activity into a return without clean reconciliation. When a broker report proceeds but your return reports little gain, the entire case turns on whether you can prove cost basis, lot tracing, and sourcing across exchanges, wallets, and on-chain transfers using records that match what platforms can corroborate.
At the Tax Law Offices of David W. Klasing, we help clients bring 1099-DA proceeds reporting into alignment with defensible tax reporting before the IRS turns a math issue into an intent issue. Our dual-licensed Civil and Criminal Tax Attorneys & CPAs handle 1099-DA driven audits, John Doe summons driven enforcement, and high-risk eggshell audit and criminal tax investigation postures where crypto activity sits at the center of the case. Our work focuses on controlling communications, building a transaction-level record that reconciles platform data to the return, and selecting the safest corrective path the facts support when prior-year reporting or basis documentation falls short.
A confidential, reduced-rate initial consultation can start the process quickly. Call the Tax Law Offices of David W. Klasing today at 800-681-1295 or request an reduced-rate initial consultation through the firm’s online scheduling option HERE.
