Example 1—Basis Reported to the IRS

Official source

You received a Form 1099-B or Form 1099-DA reporting the sale of stock you held for 3 years. It shows proceeds (in box 1d on Form 1099-B or box 1f on Form 1099-DA) of $6,000 and cost or other basis (in box 1e on Form 1099-B or box 1g on Form 1099-DA) of $2,000. Box 12 on Form 1099-B or box 2 on Form 1099-DA is checked, meaning that basis was reported to the IRS. You don’t need to make any adjustments to the amounts reported on either Form 1099-B or Form 1099-DA or enter any codes. This was your only 2025 transaction. Instead of reporting this transaction on Form 8949, you can enter $6,000 on Schedule D, line 8a, column (d); $2,000 in column (e); and $4,000 ($6,000 − $2,000) in column (h).

If you had a second transaction that was the same except that the proceeds were $5,000 and the basis was $3,000, combine the two transactions. Enter $11,000 ($6,000 + $5,000) on Schedule D, line 8a, column (d); $5,000 ($2,000 + $3,000) in column (e); and $6,000 ($11,000 − $5,000) in column (h).

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Example 1—Basis Reported to the IRS

Official source

You received a Form 1099-B or Form 1099-DA reporting the sale of stock you held for 3 years. It shows proceeds (in box 1d on Form 1099-B or box 1f on Form 1099-DA) of $6,000 and cost or other basis (in box 1e on Form 1099-B or box 1g on Form 1099-DA) of $2,000. Box 12 on Form 1099-B or box 2 on Form 1099-DA is checked, meaning that basis was reported to the IRS. You don’t need to make any adjustments to the amounts reported on either Form 1099-B or Form 1099-DA or enter any codes. This was your only 2025 transaction. Instead of reporting this transaction on Form 8949, you can enter $6,000 on Schedule D, line 8a, column (d); $2,000 in column (e); and $4,000 ($6,000 − $2,000) in column (h).

If you had a second transaction that was the same except that the proceeds were $5,000 and the basis was $3,000, combine the two transactions. Enter $11,000 ($6,000 + $5,000) on Schedule D, line 8a, column (d); $5,000 ($2,000 + $3,000) in column (e); and $6,000 ($11,000 − $5,000) in column (h).