How to Reconcile Form 1099-DA With Your Crypto Transactions in 2026

A form arrived from your exchange with a proceeds number on it that looks nothing like what you think you made on crypto, and a cost basis column that is mostly empty. That combination is not a mistake, and it is not a signal that you did something wrong. That is how the new reporting regime works, and learning to reconcile Form 1099-DA against your own transaction records is the most useful thing a US crypto filer can do this year.

Here is the shape of the problem. US digital asset brokers were required to start reporting customer sales to the IRS on Form 1099-DA for transactions effected on or after January 1, 2025, and must report basis on certain transactions effected on or after January 1, 2026. On the earliest forms, most brokers reported gross proceeds and left basis blank. Proceeds are what you received. Your gain is proceeds minus what you paid, and that second number often exists only in your own records.

The IRS says so directly. Its guidance states that basis must be calculated by taxpayers before the return can be filed, and that whether or not you receive a Form 1099-DA, you must report all income, gains, and losses from digital asset transactions on your federal income tax return.

This guide covers what the form actually reports, why the two sets of numbers disagree, and the seven-step process for closing the gap on Form 8949.

Quick Answer

To reconcile Form 1099-DA, put the broker’s reported disposals next to your own transaction history and resolve every difference. Gather all accounts, not just the ones that sent a form. Sort each line into covered or noncovered using box 9. Match on asset and units before dollars. Rebuild any cost basis the form leaves blank. Verify the holding period yourself. Then report each disposal in the correct digital asset box on Form 8949, using an adjustment code only where you and the broker genuinely disagree.

Key Takeaways

• Form 1099-DA reports gross proceeds from digital asset dispositions, and in some cases basis. It does not report your profit.
• Basis reporting became mandatory for covered securities on transactions effected on or after January 1, 2026. Anything acquired before 2026, transferred in, or not custodied by that broker at acquisition is noncovered, and its basis box may be blank.
• Your broker cannot use your purchase records to report your basis. Under current law, brokers may use customer provided acquisition information solely for lot selection and not for reporting basis or acquisition dates.
• Transactions with no Form 1099-DA behind them still belong on your return.
• Reconciliation lands on Form 8949, which now uses boxes G, H, and I for short term digital assets and boxes J, K, and L for long term.

What Form 1099-DA Actually Reports

Brokers use Form 1099-DA, Digital Asset Proceeds From Broker Transactions, to report proceeds from, and in some cases basis for, digital asset dispositions to you and to the IRS.

The word doing the heavy lifting is “proceeds.” Every disposal counts toward it. Under the broker reporting rules, a sale includes disposing of digital assets in exchange for cash, stored value cards, different digital assets, or services provided by the broker, along with several other situations. So a person who bought $5,000 of crypto and rotated it through six swaps can see a five-figure proceeds total on a portfolio that never grew. That is not an error. It is what gross proceeds measures.

The broker already nets one thing out. Brokers must reduce proceeds by digital asset transaction costs, including transaction fees, commissions, and transfer taxes related to the sale. So the proceeds figure is net of the broker’s own selling costs, though not of anything you paid elsewhere.

These are the boxes that drive the rest of your work.

Box	What it carries	Why it matters when you reconcile
1b, 1c	Name of the digital asset and number of units	Your primary matching keys. Match on these before dollars.
1d	Date acquired	Left blank when units were acquired on a variety of dates, or when box 9 is checked.
1e	Date sold or disposed	Pins the disposal to a date in your own ledger.
1f	Proceeds	Already reduced by the broker’s transaction costs on the sale.
1g	Cost or other basis	Blank on most noncovered lines. This is the gap you fill.
2	Basis reported to the IRS	Decides which box you check on Form 8949.
6	Gain or loss, with short term, long term, and ordinary indicators	Verify it. It can be wrong on transferred-in lots.
8	Broker relied on customer provided acquisition information	A lot-ordering signal, not a basis signal.
9	Digital asset is a noncovered security	The most informative checkbox on the form.
12a, 12b	Units transferred in and transfer-in date	Confirms the lot arrived from somewhere else.

Why the Numbers Disagree

Three structural reasons account for nearly every mismatch, and none of them is anyone’s fault.

The covered security rule. For Form 1099-DA purposes, a covered security is a digital asset acquired after 2025 for cash, stored value cards, different digital assets, or property or services whose disposition the broker must report, in an account for which the broker provided custodial services, and only if it was acquired in that account and held there until the broker effects the disposition. Everything else is noncovered. The instructions name the categories: any digital asset the broker did not custody at acquisition, any digital asset acquired before 2026, and any digital asset transferred in.

When a broker checks box 9 to flag a noncovered asset, it does not have to complete the date acquired box, the basis box, or the gain or loss box, and does not have to check box 2. That single checkbox explains most of the empty space on a first Form 1099-DA.

The broker is not allowed to use your records. A broker may take customer provided acquisition information into account to identify which units were sold, which is lot ordering. Under current law, brokers may use that information solely for lot selection purposes and not for reporting basis or acquisition dates. The IRS confirmed the point in its broker reporting FAQs: even where a transferring broker supplies an acquisition information statement backed by purchase invoices, the receiving broker may not rely on it to report the customer’s basis on Form 1099-DA.

The broker only sees its own account. In determining whether a gain or loss is short term or long term, the broker is not required to consider other transactions, elections, or events occurring outside the account. And if the broker does not take customer provided acquisition information into account for lot ordering, it treats assets transferred into your account as acquired as of the date and time of the transfer. A coin you have held since 2019 can therefore surface with a holding period that began the week it landed at the exchange.

The Seven-Step Reconciliation

Step 1. Inventory every account, not just the ones that sent a form. For 2025, the filing requirements generally applied to US brokers, so taxpayers transacting with foreign brokers may not have received a form. Decentralized finance brokers and some foreign brokers are not required to file or furnish one. De minimis thresholds also apply in places, including $600 for certain payment processor sales and $10,000 for designated sales of qualifying stablecoins under the optional reporting method. Pull a full transaction export from each exchange, wallet, and chain before you open a single form.

Step 2. Sort each reported line into covered or noncovered. Look for box 9 first. It tells you in advance which lines will have blanks, which turns surprise into expectation.

Step 3. Match on units and dates before dollars. Use box 1b and box 1c for asset and quantity, box 1e for the disposal date, and boxes 12a and 12b for transfer-in details. Dollar figures are the least reliable key because fee treatment and pricing sources vary. Fee-paying disposals are a common source of broker lines you do not recognize: where you have not specifically identified the unit sold, the broker applies FIFO to determine which unit paid the transaction fee.

Step 4. Rebuild the missing basis. Work through the exchange’s full transaction export, blockchain explorer history, bank and card statements that funded purchases, and archived order confirmations. Defaulting to zero basis makes the entire proceeds figure taxable gain, so it is worth real effort to avoid. If your records were kept as one universal pool rather than per account, Revenue Procedure 2024-28 provides a safe harbor under section 1012(c)(1) allowing a reasonable allocation of unused basis to the assets held in each wallet or account as of January 1, 2025, by specific unit allocation or global allocation, subject to conditions. That transition is worth walking through with a tax professional.

Step 5. Verify the holding period yourself. Compare box 6 against your own acquisition date, especially on lots that were transferred in.

Step 6. Place each line in the correct Form 8949 box. Details below.

Step 7. Apply an adjustment code only where you disagree. Details below.

Example: One Sale, Reconciled

Consider a filer who bought 2 ETH in a self custody wallet in March 2023, transferred it to a US exchange in August 2026, and sold it there in November 2026. The form arrives showing 2 units of Ether, a disposal date in November, proceeds in box 1f, box 9 checked, box 1g blank, and a transfer-in date in box 12b of August 2026.

Nothing on that form is wrong. It is simply incomplete, in the way the rules require.

Element	What the form says	What the filer’s records say	Reconciliation
Asset and units	2 Ether	2 Ether	Match
Date sold	November 2026	November 2026	Match
Proceeds	Reported in box 1f, net of the broker’s selling fees	Same, plus a network fee the broker did not reflect	Adjust with code E
Cost or other basis	Blank, box 9 checked	March 2023 purchase price from the wallet’s on-chain history plus the funding bank record	Enter the correct basis in column (e)
Holding period	Box 6 blank on a noncovered line	Held since March 2023, so long term	Report in Part II
Form 8949 placement	Box 2 not checked	No basis reported to the IRS	Part II, box K

The filer lists the sale in Part II with box K checked, enters the rebuilt basis in column (e), enters code E in column (f) for the unreflected network fee, and enters that fee in column (g) as a negative number. The IRS receives a return whose proceeds figure matches the form it already holds and whose gain reflects what actually happened.

If the same 2 ETH had instead been bought on the exchange in early 2026 and sold there in November 2026, it would be a covered security. Box 1g would carry basis, box 2 would be checked, box 6 would classify the gain, and the same disposal would land in Part I with box G checked, most likely with columns (f) and (g) left blank.

Where Reconciliation Lands: The Form 8949 Boxes

Digital assets now have dedicated boxes, and the instructions are explicit that the older ones do not apply to them.

Part I, short term. Box G covers digital asset transactions reported to you with an amount shown for basis, unless the statement indicates that amount was not reported to the IRS. Box H covers transactions reported without a basis amount, or showing basis was not reported to the IRS. Box I covers transactions for which you received no form. The instructions say directly: do not use box C to report digital asset transactions, use box I.

Part II, long term. Boxes J, K, and L mirror G, H, and I. Again the instructions say: do not use box F for digital asset transactions, use box L.

Box 2 on your Form 1099-DA is the tiebreaker between the first two. Checked means basis went to the IRS, which puts you in box G or box J. Unchecked puts you in box H or box K.

There is a Schedule D shortcut, and it is narrower than most filers expect. You may report certain transactions directly on Schedule D only where the form shows basis was reported to the IRS and shows no adjustments in box 1h or box 1i, the Ordinary box in box 6 is not checked, you need no adjustment to basis, character, or gain, and you are not deferring or terminating deferral on a Qualified Opportunity Fund investment. A blank basis box disqualifies the line.

The adjustment codes you will actually use

Situation	Code	What you do
Basis in box 1g is incorrect	B	Under box H or K, enter the correct basis in column (e) and zero in column (g). Under box G or J, enter the broker’s basis in column (e) and correct it with an adjustment in column (g).
The gain type in box 6 is incorrect	T	Report the transaction on the correct part of Form 8949, entering zero in column (g) if nothing else needs adjusting.
Selling expenses or digital asset transaction costs are not reflected on the statement	E	Enter proceeds and basis as shown, then enter the unreflected costs in column (g) as a negative number.
Nondeductible wash sale loss, where applicable	W	Enter the nondeductible loss as a positive number in column (g).
An adjustment none of the above describes	O	Enter the adjustment amount in column (g).

For most transactions you leave columns (f) and (g) blank.

One clarification on wash sales, because the box invites misreading. Box 1i on Form 1099-DA covers losses from wash sales of tokenized securities under the section 1091 rules that apply to stock and securities. It is not a general statement about wash sale treatment across all digital assets, and it does not by itself establish wash sale treatment for digital assets generally.

If the form is factually wrong rather than merely incomplete, the IRS’s guidance for recipients is to request a corrected form from the issuer named in the Filer box at the top left, keep a copy of the corrected form and all correspondence, not contact the IRS because the IRS cannot correct your Form 1099-DA, and not wait to file your taxes.

Tax Reporting Requirements

1. Form 1099-DA (Digital Asset Proceeds From Broker Transactions) is an information return. Brokers file it with the IRS and furnish a statement to you. For statements covering 2025 transactions, the IRS said brokers needed to provide them to taxpayers by February 17. You do not file this form; you reconcile against it.
2. Form 8949 (Sales and Other Dispositions of Capital Assets) lists each disposal. Digital assets use boxes G, H, and I in Part I for short term and boxes J, K, and L in Part II for long term, with any correction carried by an adjustment code in column (f).
3. Schedule D (Form 1040) aggregates the Form 8949 totals into your net short term and long term capital gain or loss. Only the narrow exception described above allows direct Schedule D reporting.
4. Form 1040 carries the digital asset question and the resulting capital gain or loss. Digital asset receipts that are income rather than disposals go through the appropriate income schedule instead of Form 8949.

Common Reconciliation Mistakes (and How to Avoid Them)

• Treating proceeds as profit. Box 1f is what you received, not what you made. Subtracting basis is your job, and skipping it means paying tax on your own capital.
• Reporting only the accounts that sent a form. The absence of a Form 1099-DA is not the absence of a taxable event, and the IRS says so plainly.
• Accepting box 6 without checking it. The broker classifies the holding period from what it can see inside your account with it.
• Using box C or box F on Form 8949 for crypto. The instructions redirect digital assets to box I and box L.
• Assuming your basis method matched the broker’s. Without an adequate and timely identification of the units sold, the broker generally reports the earliest units purchased first, which is FIFO.
• Defaulting missing basis to zero. That converts the whole proceeds figure into gain. Exhaust the record-rebuilding sources first.
• Waiting for a corrected form before filing. The IRS guidance is to request the correction and not delay filing.

How CRPTM Helps You Reconcile Form 1099-DA

Reconciliation is a data problem before it is a tax problem, and the data usually lives in more places than anyone remembers. CRPTM is a crypto portfolio tracker and US crypto tax calculator built for that stage of the work.

1. Bring everything into one ledger, including the form itself. CRPTM supports different exchanges, wallets, and blockchains, with connection methods including API sync, OAuth, exchange CSV, CRPTM CSV, Native Exchange File, manual entry, and an IRS Form 1099-DA upload. Only a modest portion of these integrations support live API sync, so most accounts import by file rather than by live connection.
2. Let the flags find the gaps. The Transaction Manager marks items as “Missing Purchase History,” including the exact quantity that lacks a basis, and as “Review Txn Type,” and surfaces both counts on the tax summary. That is effectively a worklist for the noncovered lines on your form.
3. Keep transfers out of the disposal column. Self transfer matching pairs movements between your own wallets so they are not mistaken for disposals.
4. Set the method deliberately. CRPTM supports HIFO, FIFO, and LIFO cost basis methods and Universal and Wallet tracking methods, and defaults to FIFO and Wallet.
5. Generate the output and compare it. After selecting a tax year and generating the tax summary, CRPTM produces pre-filled Form 8949 and Schedule D, along with export files for TurboTax, H&R Block, and TaxAct. Report and form downloads require a paid plan. CRPTM does not e-file; you or your CPA file the forms.

Related Questions / FAQs

How do I reconcile Form 1099-DA with my own crypto records?

Gather every account, sort each reported line into covered or noncovered using box 9, match on asset and units before dollars, rebuild any missing cost basis, verify the holding period yourself, place each line in the correct Form 8949 box, and use an adjustment code only where you and the broker genuinely disagree.

Why is the cost basis box blank on my Form 1099-DA?

Because the asset is almost certainly a noncovered security. Brokers are not required to report basis on noncovered assets, which include anything acquired before 2026, anything transferred in, and anything the broker did not custody at the time you acquired it.

Do I still have to report crypto if I never received a Form 1099-DA?

Yes. The IRS states that whether or not you receive a Form 1099-DA, you must report all income, gains, and losses from digital asset transactions on your federal income tax return. Those disposals go in box I or box L on Form 8949.

Which Form 8949 box do I check for a crypto sale?

For short term digital asset transactions, box G when basis was reported to the IRS, box H when it was not, and box I when you received no form. The long term equivalents are J, K, and L. Boxes C and F do not apply to digital assets.

My Form 1099-DA shows the wrong cost basis. What do I do?

Enter code B in column (f) of Form 8949. Under box H or box K, enter the correct basis in column (e) and zero in column (g). Under box G or box J, enter the broker’s figure in column (e) and correct it with an adjustment in column (g).

Can my exchange use the purchase records I give it to report my basis?

No. Under current law, brokers may use customer provided acquisition information solely for lot selection purposes and not for reporting basis or acquisition dates.

When did cost basis reporting on Form 1099-DA become mandatory?

Brokers must report basis on certain transactions effected on or after January 1, 2026, for digital assets that are covered securities.

Does the proceeds figure already include exchange fees?

Brokers must reduce proceeds by digital asset transaction costs, including transaction fees, commissions, and transfer taxes related to the sale. Code E on Form 8949 handles costs that the statement does not reflect.

Can I report crypto totals straight on Schedule D and skip Form 8949?

Only in a narrow case: basis was reported to the IRS, there are no adjustments in box 1h or box 1i, the Ordinary box in box 6 is not checked, and you need no other adjustment. A blank basis box rules this out.

What should I do if my Form 1099-DA has incorrect information?

Request a corrected form from the issuer named in the Filer box, keep a copy of the corrected form and all correspondence, do not contact the IRS about it because the IRS cannot correct your Form 1099-DA, and do not delay filing while you wait.

Conclusion

A Form 1099-DA with a large proceeds figure and an empty basis column is not an accusation. It is an incomplete picture, and completing it is the taxpayer’s job by design. The work is finite and it repays order: inventory the accounts, sort covered from noncovered, match units before dollars, rebuild the basis the form does not carry, verify the holding period, then let the Form 8949 boxes and adjustment codes carry whatever disagreement is left.

Filers who treat the form as a starting point rather than a verdict tend to finish faster and land closer to what they actually owe. For the background on how this reporting regime arrived, see our post on the 1099-DA era. For a deeper walk through the form where reconciliation lands, see our Form 8949 guide, and for the wider picture, the 2026 overview of IRS rules and forms.

References / Sources

1. IRS, Instructions for Form 1099-DA (2026): https://www.irs.gov/instructions/i1099da
2. IRS, Understanding your Form 1099-DA: https://www.irs.gov/businesses/understanding-your-form-1099-da
3. IRS, Instructions for Form 8949 (2025): https://www.irs.gov/instructions/i8949
4. IRS, Frequently asked questions about broker reporting: https://www.irs.gov/filing/frequently-asked-questions-about-broker-reporting
5. IRS, FS-2025-06, Tax professionals can prepare now to assist their clients with reporting proceeds from certain digital asset transactions: https://www.irs.gov/newsroom/tax-professionals-can-prepare-now-to-assist-their-clients-with-reporting-proceeds-from-certain-digital-asset-transactions
6. IRS, Revenue Procedure 2024-28: https://www.irs.gov/pub/irs-drop/rp-24-28.pdf
7. IRS, About Form 1099-DA, Digital Asset Proceeds From Broker Transactions: https://www.irs.gov/forms-pubs/about-form-1099-da
8. IRS, Digital assets: https://www.irs.gov/filing/digital-assets

Disclaimer

This article is for educational purposes only and does not constitute tax, legal, or financial advice. Federal and state tax rules may change. Consult a qualified tax professional regarding your specific circumstances.