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Reviewed by: William McLee
Reviewed date:
January 13, 2026

Form 8949 (2015 Tax Year) Checklist

Understanding Form 8949's Purpose

Form 8949 enables taxpayers to report the sale and disposition of capital assets, thereby reconciling the amounts reported on Forms 1099-B and 1099-S with the figures appearing on their tax returns. The form separates transactions into short-term holdings of one year or less and long-term holdings of more than one year, with each category requiring distinct basis-reporting classifications.

Taxpayers must align their reporting with broker statements that indicate whether cost basis was reported to the IRS, ensuring accurate reconciliation between third-party reporting and individual tax filings. Capital assets include stocks, bonds, real estate, and other investment property that generate taxable gains or losses upon disposition.

Determining Your Holding Period Classification

You must calculate the holding period by counting from the day after you acquired the property through the date you disposed of it. The purchase date establishes the beginning of your holding period and must be documented accurately to support your classification decision.

Classifying Short-Term and Long-Term Assets

Assets held for exactly one year or less qualify as short-term and require reporting in Part I of the form. Assets held for more than one year are considered long-term and are subject to reporting in Part II. The distinction between these categories directly affects your tax rate, making accurate calculation of the holding period essential for proper tax treatment.

Obtaining Required Documentation

Review your Form 1099-B or substitute statement from your broker to identify whether the basis was reported to the IRS. Brokers report the gross proceeds from sales of capital assets, which you must reconcile against your adjusted basis to calculate taxable gains or losses.

This checklist is for educational purposes only and does not constitute tax or legal advice. Always review official IRS instructions and consult a qualified professional for guidanfor whichce,.

Selecting the Appropriate Box for Short-Term Transactions

Part I requires you to check only one box per page based on your transaction characteristics. Box A applies to transactions for which the basis was reported to the IRS and for which no adjustments are needed. Box B covers transactions where the basis was reported but adjustments are required. Box C encompasses transactions not reported on Form 1099-B or those requiring different treatment.

Using the Box A Aggregation Exception

The instructions permit you to aggregate all short-term transactions under Box A where the basis was reported, and no adjustments or codes apply. You may enter combined totals directly on Schedule D, line 1b, without listing individual transactions on Form 8949, thereby creating an optional simplification for qualifying transactions.

Completing Individual Transaction Entries

List each transaction in columns (a) through (h) for Box B and Box C short-term transactions. Enter the property description, acquisition date, sale date, proceeds, cost basis, applicable adjustment codes, adjustment amounts, and calculated gain or loss.

The gain or loss calculation requires you to subtract column (e) from column (d), then add or subtract any adjustment in column (g) to reach the final figure appearing in column (h). You must reduce your proceeds by any fees or commissions paid to brokers or other intermediaries before calculating your net gain or loss on the transaction.

Reporting Long-Term Transactions Using Part II

Apply the same basis-reporting classification structure to long-term holdings using Boxes D, E, or F. Taxpayers disposing of capital assets through involuntary conversions must still report the transactions on Form 8949 unless the conversion resulted from casualty or theft.

Applying the Box D Aggregation Rule

You may aggregate all long-term transactions under Box D, where the basis was reported. No adjustments apply; enter the totals directly on Schedule D, line 8a, without including Form 8949 details. This aggregation option applies exclusively to Box D transactions and provides the same simplified reporting available for Box A short-term transactions.

This checklist is for educational purposes only and does not constitute tax or legal advice. Always review official IRS instructions and consult a qualified professional for guidanfor whichce,.

Correcting Basis Reporting Errors

When you select Box A or Box D, but the IRS-reported basis on Form 1099-B contains errors, you must enter the broker-reported basis in column (e) exactly as shown. Enter a corrective adjustment in column (g) with the appropriate code to preserve the original IRS-reported figure while capturing your correction.

This procedure enables the IRS to reconcile your return against broker reports, documenting your basis correction with supporting codes. A tax professional can help you identify reporting discrepancies and determine the appropriate adjustment codes for complex transactions involving multiple capital assets.

Calculating and Totaling Your Results

Calculate gain or loss in column (h) by subtracting column (e) from column (d), then adding or subtracting any adjustment from column (g). Sum all columns (d), (e), (g), and (h) on line 2, treating negative amounts as subtractions to reach accurate totals.

Key Requirements for 2015 Tax Year Compliance

Certain grouped transactions with a basis reported and no adjustments may be excluded from Form 8949 and instead appear as totals on Schedule D, as per the 2015 instructions. Brokers expanded their basis-reporting disclosures on Form 1099-B itself during 2015, making the form review essential for proper box selection rather than relying on independent judgment. Adjustment codes for common scenarios, including incorrect cost basis and wash-sale adjustments, are detailed in the instructions, requiring Box A and Box D filers to use column (g) for intentional reconciliations.

Form 8949 legally prohibits combining short-term and long-term transactions on a single page, thereby eliminating previous ambiguity about mixing holding periods. Taxpayers with transactions falling under multiple categories must file separate Form 8949 pages, each with distinct totals for each category, to prevent confusion between basis-reported and non-basis-reported positions and ensure accurate mapping of Schedule D lines.

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This checklist is for educational purposes only and does not constitute tax or legal advice. Always review official IRS instructions and consult a qualified professional for guidance.

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