Form 1099-DA is a new IRS information return that crypto brokers use to report your digital-asset sales. Brokers report gross proceeds first, with cost-basis reporting phasing in over time, so early forms often show what you sold but not what it cost. You reconcile the form against your own records and report the complete picture, including basis, on your return.
Part of our guide: Crypto Taxes.
The short version
- Form 1099-DA is a broker information return for digital-asset sales and exchanges. The broker files it and sends you a copy.
- Brokers report gross proceeds first. Cost-basis reporting phases in, so early forms may omit or understate basis.
- A 1099-DA is not your tax return. You still report gains and losses yourself, using your own basis records.
- Basis gaps are common, especially for assets moved between wallets and platforms, so reconciliation is the real work.
- The IRS receives its own copy, so what you report should tie to the form, with your records explaining any differences.
What the form reports
Form 1099-DA is modeled on the information returns that already exist for securities. When a broker facilitates a sale or exchange of a digital asset, it reports the transaction to you and to the IRS. The headline figure is gross proceeds, the amount you received on disposition. Over time the form is designed to carry more, including cost basis, but the reporting is being introduced in stages rather than all at once.
Why basis is often missing at first
This is the practical catch. Because basis reporting phases in, and because a broker only knows the basis of assets it can see, early forms frequently show proceeds without a reliable cost figure. If you bought a coin on one platform and sold it on another, the selling broker may have no idea what you originally paid. The result is a form that tells the IRS what you sold for while leaving the cost side to you. A blank or zero basis is not a statement that your basis is zero; it is a statement that the broker did not have the number.
How to reconcile 1099-DA with your records
Reconciliation is where the accuracy lives. Match each transaction on the form to your own records, confirm the proceeds agree, and supply the basis the broker did not. Your reported gain or loss flows onto Form 8949 and Schedule D. Where the form shows no basis, you provide it from your acquisition records, which is exactly why keeping those records over the years matters. The goal is a return that ties to the form on proceeds and is complete on basis.
What the IRS sees when you don’t
Because the IRS receives its own copy of every 1099-DA, the return is now matched against third-party data the way wage and brokerage income already is. If you report proceeds that do not tie to the forms, that mismatch is visible. And if you ignore a form that shows proceeds without basis, the worst-case reading is that your entire proceeds are gain, which overstates what you owe. Reconciling is not just good hygiene; it is how you avoid being taxed on money you never made.
What I actually see
The most common problem is the zero-basis trap. A form arrives with proceeds and no cost, the holder assumes the number is right or does not correct it, and the tax is calculated as if the entire sale were profit.
The second is cross-platform blindness. Assets bought on one venue and sold on another produce forms with no usable basis, and only the holder’s own records can fill the gap. Nobody else has the full history.
The third is treating the form as the return. A 1099-DA is an input, not an answer. People who file expecting the broker to have done the calculation discover that the reconciliation was always theirs to do.
Where this goes wrong
The holder never kept acquisition records, the 1099-DA shows proceeds with no basis, and there is nothing to reconcile against. The return then either overstates gain by treating proceeds as profit or understates it with a basis that cannot be supported. The form did its job; the missing records are what turned it into a problem. The defense is built years earlier, by exporting and keeping acquisition data as you go.
The decision rule
- Keep every 1099-DA and match it line by line to your own transaction records.
- Confirm the proceeds tie out, and treat any figure that does not as a question to resolve, not ignore.
- Supply basis the broker omitted from your acquisition records, never defaulting to zero because the form was blank.
- Report on Form 8949 and Schedule D so your gains and losses reconcile to the forms the IRS holds.
- Export acquisition data continuously, since cross-platform history is what closes the basis gaps.
If a 1099-DA shows proceeds with no basis and you cannot supply the basis yourself, you are one form away from being taxed on money you never earned.
Where this sits
The 1099-DA is only as useful as your own records. A tax records checklist is what makes reconciliation possible. Reconstructing cost basis is the repair when basis is missing. Separating transfers from sales keeps non-taxable moves off the form’s radar. It all reports through Crypto Taxes.
Sources
- IRS, About Form 1099-DA, Digital Asset Proceeds From Broker Transactions
- IRS, About Form 8949
- IRS, Notice 2014-21, virtual currency is property
- IRS, Digital assets
Related
- Crypto tax records checklist
- How to reconstruct crypto cost basis
- How to separate crypto transfers from taxable sales
- What is specific identification for crypto?
- Common crypto tax record mistakes
Last updated: 5 August 2026.
This article is general education, not legal, tax, or investment advice. Tax outcomes depend on your facts, your records, and current law, which is still developing for digital assets. Talk to a qualified CPA about your own situation.
