What Is Form 1099-DA for Crypto? (2026 Guide)

Form 1099-DA is the new IRS information form for digital asset broker transactions. If you sold, traded, or otherwise disposed of crypto through a centralized exchange or other covered broker during 2025, you may receive one in 2026.

The important part: Form 1099-DA is not a complete crypto tax return. It can help you reconcile exchange activity, but it may not know your full cost basis, transfers, self-custody history, DeFi activity, staking income, or transactions from other platforms.

This guide is for U.S. crypto users who receive a 1099-DA and want to avoid two bad outcomes: ignoring a form the IRS also received, or blindly copying incomplete numbers and overpaying.

Short answer

Use Form 1099-DA as a matching document, not as your only source of truth.

What Form 1099-DA actually is

The IRS describes Form 1099-DA as the form used to report digital asset proceeds from broker transactions. The broker sends information to both you and the IRS, similar in spirit to other 1099 forms.

The IRS final regulations phase in the rules:

• for transactions on or after January 1, 2025, brokers report gross proceeds;
• for transactions on or after January 1, 2026, brokers must also report basis for certain covered digital assets;
• the initial final regulations did not include non-custodial or decentralized brokers that do not take possession of the assets being sold or exchanged.

In plain English: centralized platforms are becoming much more visible to the IRS, but the form still may not understand your full crypto history.

The IRS also now has a plain-English explainer page that says two things clearly: you must calculate basis before filing, and you must still report all taxable digital-asset activity whether or not you receive Form 1099-DA.

Why cost basis is the part to watch

Cost basis is what you paid for the asset, adjusted where relevant. Your taxable gain or loss is roughly:

Proceeds minus cost basis = capital gain or loss

The IRS says most 2025 Form 1099-DA statements will not include basis, and taxpayers will have to calculate basis to determine gain or loss. The 2026 instructions still make an important distinction: basis reporting is mandatory for covered assets sold after 2025, but noncovered assets can still leave box 1g blank.

That matters because an exchange often only knows your basis if the whole lifecycle happened on that same platform. The form may be incomplete if you:

• bought BTC on one exchange and later sold it on another;
• transferred coins from a hardware wallet into an exchange before selling;
• moved assets across multiple wallets;
• received crypto from mining, staking, airdrops, payments, or gifts;
• traded on several exchanges during the year.

If basis is blank, unknown, or wrong, do not panic. It does not automatically mean you owe tax on the entire proceeds amount. It means you need records that support the basis you report.

Why box 1g may still be blank

This is the part many taxpayers will miss.

The form itself can improve in 2026 without becoming complete.

Coinbase's tax help pages explain the practical split well:

• covered assets are generally crypto acquired on or after January 1, 2026 and held on the same exchange until sold;
• noncovered assets include crypto acquired before January 1, 2026 and crypto transferred in from another exchange or external wallet.

For noncovered assets, Coinbase says Form 1099-DA can show sale proceeds while the cost-basis field stays blank and the noncovered box is checked. That lines up with the IRS instructions for box 9 and box 1g.

So if box 1g is blank, the practical question is not just "did my exchange fail?" It is usually one of these:

• you sold crypto acquired before January 1, 2026;
• you transferred the asset into the selling exchange from somewhere else;
• the broker never received complete acquisition details in time;
• the asset falls outside covered-basis reporting.

What box 9 means on Form 1099-DA

Box 9 matters because it tells you the broker is treating the asset as noncovered.

That usually means the broker is reporting the sale proceeds, but not standing behind basis reporting to the IRS the way it would for a covered asset that stayed on-platform from acquisition through sale.

If box 9 is checked and box 1g is blank, that is not automatically a mistake. It can be the expected result under the new rules.

It still creates work for you, because you need to support the basis yourself when you prepare Form 8949 and Schedule D.

What to do when a 1099-DA arrives

A practical workflow looks like this:

1. Download the 1099-DA from the broker. Save the PDF and any CSV export available from the same platform.
2. Export your full transaction history. Include buys, sells, trades, deposits, withdrawals, fees, rewards, and transfers.
3. Match proceeds first. Check whether the proceeds on the form roughly line up with exchange sales and disposals.
4. Rebuild cost basis. Use your own records, prior exchange exports, wallet history, and tax software if the form is missing basis.
5. Check whether the asset was covered or noncovered. A checked noncovered box changes what the broker was required to report.
6. Prepare Form 8949 and Schedule D. The 1099-DA is informational; your return still needs the actual capital gains and losses reported properly.
7. Keep evidence. Save exports, wallet addresses, tax software reports, and notes explaining any corrections.

If your selling exchange offers a tax-lot editing tool, use it carefully. Coinbase specifically lets customers add or edit missing acquisition details for certain inbound transfers so later tax reporting is more accurate. That can help, but it does not replace keeping your own records.

If you only used one exchange, never transferred assets, and had simple buys and sells, this may be quick. If you used self-custody, DeFi, bridges, NFTs, or multiple exchanges, expect cleanup.

When crypto tax software is worth it

You do not need a paid tax tool just because you receive one 1099-DA. A small, simple history may be manageable with exchange exports and careful records.

Crypto tax software starts to make more sense when you need to connect activity across multiple sources. It can help import exchanges and wallets, identify transfers that are not taxable sales, reconstruct missing basis, and generate Form 8949 reports.

For current shortlist options, start with our best crypto tax software guide. If you want the simpler beginner path, read best crypto tax software for beginners. For a direct product decision, compare Koinly vs CoinLedger, then read the Koinly review or CoinLedger review.

What Form 1099-DA may not cover

Do not assume one form means your crypto taxes are finished. Depending on your activity, Form 1099-DA may not fully capture:

• assets held in self-custody;
• activity on platforms that are not covered brokers;
• DeFi trades, liquidity pools, bridges, or smart-contract interactions;
• staking, mining, airdrops, referral rewards, or other ordinary income;
• transactions from exchanges that did not issue a form;
• transfers between your own wallets.

The IRS explicitly reminds taxpayers that every taxpayer must report related digital asset income, gains, or losses whether they receive Form 1099-DA or not. The form is a helpful clue, not permission to ignore everything else.

Common mistakes to avoid

Treating proceeds as profit

Proceeds are the sale amount, not your gain. If a form shows $20,000 of proceeds and no basis, that does not necessarily mean $20,000 of profit.

Forgetting transferred-in assets

If you sold coins that were originally bought elsewhere, the selling exchange may not know what you paid. You need records from the original purchase source.

Treating blank basis as proof you owe tax on the full amount

Blank basis on the form is a reporting limitation, not automatic proof that your basis was zero. You still need to calculate the real basis from your records.

Ignoring forms sent to the IRS

If your broker sends Form 1099-DA to you, it also reports information to the IRS. Your return should be reconcilable with that information, even when you correct missing or incomplete basis.

Assuming no form means no tax

No 1099-DA does not erase taxable activity. You still report sales, trades, spending, and other taxable events.

Bottom line

Form 1099-DA makes crypto tax reporting harder to ignore, but it does not make it automatic.

For 2026 filing, the biggest practical issue is missing or incomplete cost basis for 2025 transactions. Use the form to check what brokers reported, then rely on complete transaction records and careful reconciliation before filing. If your history spans multiple exchanges or wallets, a crypto tax tool is often worth comparing before you submit anything.

This article is educational and not tax advice. If your activity is large, messy, business-related, or audit-sensitive, work with a qualified tax professional.