How do I report Form 1099-DA on Form 8949 and Schedule D?
Work row by row. Each Form 1099-DA row carries an "Applicable checkbox on Form 8949" code (G, H, J, K, or Y), proceeds in box 1f for column (d), and, when the broker reported it, basis in box 1g for column (e). Form 8949 totals roll to Schedule D by box. First, though: a Form 1099-DA row records what the broker saw, not what the transaction was. Before a row goes on Form 8949 as a sale, the hash behind it needs a category. A withdrawal to the client's own wallet, or another non-disposition the broker reported, belongs in review, not on the return as a disposal. CryptoTaxEdge classifies hashes (category, treatment, confidence, review flag). It does not prepare Form 8949.
Key takeaways
- Form 8949 digital-asset boxes are G, H, I (short-term) and J, K, L (long-term). Do not use box C or F for digital assets.
- The Form 1099-DA checkbox maps directly: G or J when basis was reported to the IRS, H or K when it was not. Code Y means holding period unknown to the broker; use your records, and land the row in H or K.
- 2025 forms (the ones extension filers are finishing now) are mostly proceeds-only. Basis was voluntary, and brokers use code Y when basis is not reported.
- Proceeds from box 1f go in column (d). If box 2 shows basis was reported, box 1g goes in column (e) even if it is wrong; enter code B in column (f) and the correction in column (g). Blank basis is not zero: see Is blank cost basis on Form 1099-DA the same as zero?.
- A row the hash shows was not a disposition (for example, a self-wallet transfer) is a reconciliation item: contact the issuer, request a corrected form, and do not wait to file. It is not a silent disposal on Form 8949.
- Disposals with no Form 1099-DA (most DeFi and self-custody activity) still get reported, in box I or L.
What Form 1099-DA is, and what it is not
Form 1099-DA is the broker information return under §6045 and Treas. Reg. §1.6045-1 (as amended by T.D. 10000). For 2025 sales, gross proceeds are mandatory and basis is voluntary; for sales after 2025, basis is mandatory for covered securities (acquired after 2025 in that broker's custodial account and held there until sale), and transferred-in or pre-2026 lots are noncovered (draft: Covered vs noncovered digital assets on Form 1099-DA for 2026).
Three limits shape every reconciliation:
- The form only sees the broker's account. It does not see the client's other wallets, so recipients must use the form and their other records (Understanding your Form 1099-DA).
- Some activity is excluded. Rewards and staking are not reported on Form 1099-DA, and Notice 2024-57 relieves brokers from reporting wrapping, LP, staking, lending, short-sale, and notional principal contract transactions until further guidance (wrapping, staking, or LP; DeFi).
- No form does not mean no reporting. Report all digital-asset income, gains, and losses whether or not you receive a Form 1099-DA.
Form 1099-DA to Form 8949: field by field
| Form 1099-DA field | Where it goes on Form 8949 | Note |
|---|---|---|
| Applicable checkbox code G / H / J / K | Box G / H (Part I) or J / K (Part II) | One box per Part; use separate Parts for each box |
| Code Y | Box H or K | Holding period unknown to the broker; determine short-term or long-term from records |
| No Form 1099-DA received | Box I or L | Do not use box C or F for digital assets |
| Box 1b name, box 1c units | Column (a) | Name or symbol, exact units, and sale transaction ID if available |
| Box 1d date acquired | Column (b) | "VARIOUS" allowed for lots bought on several dates (still split short-term / long-term) |
| Box 1e date sold | Column (c) | |
| Box 1f proceeds | Column (d) | Enter the proceeds shown; unreflected digital asset transaction costs use code E in column (f) |
| Box 1g basis, box 2 checked | Column (e) as shown | If wrong, code B in column (f) and the Worksheet for Basis Adjustments amount in column (g) |
| Box 1g blank, or box 2 not checked | Column (e) from records | Enter basis from records in (e). If a basis was shown but not reported and it is wrong, code B in column (f) and -0- in column (g) |
| Box 1i wash sale loss disallowed | Code W in column (f), amount in column (g) | Tokenized securities scope; see the wash-sale page |
| Box 6 short-term / long-term | Part I or Part II | If the type of gain is wrong, report on the correct Part with code T |
| Box 9 noncovered | Usually H or K | Basis often blank; reconstruct from records (missing basis) |
| Box 12a / 12b units and date transferred in | Supporting evidence | Lot came from outside the broker; acquisition facts live in prior hashes |
Two practical notes. First, the 2025 Form 8949 instructions refer to code X in the "Applicable checkbox on Form 8949" box for an unknown holding period, while the Form 1099-DA instructions (2025 and 2026) tell brokers to use code Y. On a Form 1099-DA, read Y as that signal. Second, covered short-term, covered long-term, and noncovered sales go on separate forms even from one trade, so one sale can produce several rows.
Form 8949 to Schedule D
| Form 8949 box checked | Schedule D (Form 1040) line |
|---|---|
| G (short-term, basis reported) | 1b |
| H (short-term, basis not reported) | 2 |
| I (short-term, no form) | 3 |
| J (long-term, basis reported) | 8b |
| K (long-term, basis not reported) | 9 |
| L (long-term, no form) | 10 |
Exception 1 lets basis-reported rows with no adjustments skip Form 8949 and go to line 1a or 8a. Exception 2 allows an attached statement with the same detail, with summary totals on Form 8949 using code M. Firms choose the presentation.
Classification first, and the edges that stay with the firm
When a broker-reported row does not match the books, ask what the on-chain event was: a sale, a swap, a self-transfer, or something a human must settle.
- A row with no matching disposal. If classified history shows a move to the client's own wallet, the form overstates dispositions (companion draft: My 1099-DA treated a wallet transfer as a sale). Contact the issuer, keep the original and correspondence, and do not wait to file. If no corrected form arrives before filing, how the row is presented is firm methodology and preparer judgment (code O covers other adjustments); we do not choose it.
- A row with the wrong facts. Wrong basis, date, or holding period. Form 8949 supplies the mechanics (code B, code T, the basis worksheet). Request a corrected form from the issuer; the IRS cannot correct it.
- A disposal with no row. Self-custody and DeFi swaps still go on Form 8949 in box I or L. See Why don't my 1099-DAs match my crypto tax software?.
How CryptoTaxEdge fits
Classification is a hash in, a record out. POST https://app.cryptotaxedge.com/v1/classify with { "chain", "hash" }. One category, one treatment from the closed enum (disposal, income, non_taxable, expense, needs_review), confidence 0 to 100 as a routing signal, needs_review: true and taxable: null when a treatment cannot be honestly asserted. Confidence is not an accuracy percentage.
Custodial trades usually settle on the broker's ledger with no sale hash. The hashes that matter are around the row: lot-opening acquisitions, the deposit behind a transfer-in in box 12a or 12b, and any withdrawal the broker may have reported as a sale. An on-chain exchange of one asset for another is served as swap (house treatment disposal) when the engine resolves the shape; a shape it cannot resolve routes to needs_review. A one-way transfer whose counterparty is not verified as the client's own wallet serves as category transfer with needs_review and taxable: null (Standard GAP-1); verified self-transfers serve non_taxable. Those records tell the firm which rows to carry and which to take to the issuer. We do not write the Form 8949 row.
Worked example
A client on extension is finishing a 2025 return. A U.S. custodial exchange issued a 2025 Form 1099-DA with two rows, both code Y, box 1g blank.
Row 1: 1.50000000 ETH, proceeds $4,800 in box 1f, box 12a shows 1.5 ETH transferred in. The sale happened on the exchange's books, so there is no sale hash. The firm enters the 2023 acquisition hash and the deposit hash. The acquisition serves as swap (USDC for ETH), setting the acquisition date and basis facts. The row is a real long-term disposal. On Form 8949 it goes in Part II, box K: proceeds $4,800 in column (d), basis from records in column (e). The total rolls to Schedule D line 9.
Row 2: 0.20000000 BTC, proceeds $19,000 in box 1f. The client says they never sold BTC in 2025. The outbound hash serves as transfer with needs_review: true and taxable: null, because the destination is not yet verified as the client's own wallet. The firm confirms the address is the client's hardware wallet. That confirmation, kept in the firm's workpapers, settles the treatment; the served record stays a review-routed transfer. The row is not carried to Form 8949 as a sale. The client, with the firm's help, contacts the issuer, requests a corrected form, and keeps the original and all correspondence; the firm decides how to present the row if the correction does not arrive before filing.
Not on the form: a swap in self-custody. In August 2025 the client swapped SOL for USDC in a self-custody wallet. No Form 1099-DA exists. The swap hash serves as swap (house treatment disposal) and goes on Form 8949 in box I or L by holding period.
This example is illustrative, not advice.
What CryptoTaxEdge does not do on this page
- We do not prepare Form 8949 or Schedule D, or choose boxes, codes, or adjustment amounts.
- We do not decide whether a broker row was correct, request corrected forms, or contact issuers.
- We do not compute basis, holding period, gain, or loss, or treat blank basis as zero.
- We do not connect to wallets or take custody. Hash in; category, treatment, confidence, and review flag out.
Classify a transaction at https://cryptotaxedge.com/explorer?src=answers (ten a day, no signup).
Frequently asked questions
Do I have to list every Form 1099-DA row on Form 8949?
Not always. Exception 1 lets basis-reported rows with no adjustments go directly on Schedule D line 1a or 8a, and Exception 2 allows an attached statement instead of individual rows. Rows with blank basis or any adjustment go through Form 8949.
What does code Y on my Form 1099-DA mean?
The broker could not determine short-term or long-term. The row belongs in box H or K, and the holding period comes from the client's records. On 2025 forms, brokers use code Y whenever basis is not reported.
My Form 1099-DA shows a sale that was a transfer to my own wallet. What now?
Confirm it at the hash level, then contact the issuer, keep the original and correspondence, and do not wait to file. How to present the row if no correction arrives is a preparer decision.
Is a 2025 Form 1099-DA different from a 2026 one?
Yes. For 2025 sales, basis was voluntary (most rows blank basis and code Y). For 2026 sales, basis is mandatory for covered securities, so more rows carry G or J, and noncovered rows carry box 9.
Accounting firm with crypto clients? See the Firm plan.
This is informational only, not tax advice; verify with a qualified tax professional.