Form 1099-DA field reference
Form 1099-DA Box 11a–11c: Aggregate stablecoin or NFT reporting
What to check
- Identify whether reporting is aggregate
- Preserve transaction-level records
- Separate creator first-sale proceeds
Where Box 11a–11c flows on your return
Because Boxes 11a-11c describe an aggregate reporting method rather than a single transaction, the combined proceeds still land in Box 1f (or Box 11c specifically for NFT creator first-sale proceeds) and flow to Form 8949 as one summarized line rather than one line per underlying trade.
How Box 11a–11c works
Boxes 11a through 11c identify optional aggregate reporting that brokers may use for two narrow categories: qualifying stablecoins (tokens designed to track 1:1 with a government-issued currency through an effective stabilization mechanism and generally accepted as payment) and specified NFTs (indivisible, unique digital assets that do not provide an interest in certain excluded property). Box 11a flags which category applies, and Box 11b reports the number of underlying transactions folded into that aggregate line.
This method exists because qualifying stablecoins and specified NFTs can generate very high transaction volume relative to their tax significance, so the IRS allows brokers to summarize many small transactions on one 1099-DA line instead of itemizing every trade — a de minimis exception also excuses reporting entirely below certain proceeds thresholds for each category.
Box 11c is specific to specified NFTs: it separately reports the aggregate gross proceeds attributable to first sales by the original creator or minter, kept apart from Box 1f precisely so creator first-sale proceeds are not mixed with ordinary secondary-market resale proceeds elsewhere on the form. Because the underlying detail is aggregated, keep your own transaction-level records — the broker's summary line will not show you which individual trades made up the total if you need to verify it later.
Worked example
Ben's exchange account made 40 small stablecoin trades during the year, each below the ordinary per-transaction reporting threshold individually. Using the optional aggregate method, the broker reports one 1099-DA line: Box 11a marks "qualifying stablecoins," Box 11b shows 40 transactions, and Box 1f shows the combined proceeds across all 40 trades, which Ben reports as a single line on Form 8949.
Continue the filing flow
Frequently asked questions
Why does my 1099-DA show one line for dozens of small trades?
Your broker likely used the optional aggregate reporting method available for qualifying stablecoins or specified NFTs, which lets it combine many small transactions onto a single 1099-DA line — Box 11b shows exactly how many transactions were folded into that total.
What is Box 11c specifically for?
Box 11c reports the aggregate gross proceeds from an NFT creator's or minter's first sales, kept separate from the ordinary proceeds in Box 1f so first-sale creator proceeds are not mixed with resale proceeds elsewhere on the form.
Do I need my own records if the broker already aggregated the transactions?
Yes — the aggregate line does not show you the individual trades that made it up, so keep your own transaction history in case you need to verify the total, allocate it across multiple lots, or respond to an IRS inquiry.