Form 1099-B Tax Year 2017 Recipient Checklist
Overview and Applicability
Form 1099-B for tax year 2017 reports broker and barter exchange transactions under baseline capital gains rules with no stimulus reconciliation, Affordable Care Act shared responsibility provisions, or Tax Cuts and Jobs Act changes affecting this form. The 2017 instructions emphasize the distinction between covered and noncovered securities, with noncovered status indicated by a check in Box 5 for securities acquired before specified cutoff dates. The form continues established Section 1256 contract treatment, providing aggregate profit and loss reporting for regulated futures, foreign currency, and option contracts.
Programs Not Applicable
No Economic Impact Payment reconciliation, Affordable Care Act shared responsibility payment reporting, or Tax Cuts and Jobs Act line redesigns apply to Form 1099-B in 2017. The form operates under pre-Tax Cuts and Jobs Act capital gains reporting rules and standard broker and barter transaction reporting requirements that have been in place for several years. The focus remains on accurate basis reporting for covered securities and proper classification of gains and losses.
Ten-Step Recipient Checklist
Step 1: Verify Identification Information
Confirm the payer’s name, federal identification number, and your taxpayer identification number are correctly reported. The 2017 instructions permit the payer to display only the last four digits of your Social Security Number, Individual Taxpayer Identification Number, Adoption Taxpayer Identification Number, or Employer Identification Number on Copy B furnished to you for privacy protection. Your complete identification number has been reported to the IRS on Copy A. Verify the account number and CUSIP number match your brokerage records to ensure accurate transaction matching.
Step 2: Review Transaction Details
Examine Box 1a for the description of the property sold, such as the number of shares and the company name. Confirm Box 1b shows the date acquired unless Box 5 is checked, indicating noncovered securities, or unless acquisition dates vary for multiple lots sold in a single transaction. Verify Box 1c shows the correct trade date of sale or exchange for 2017 transactions.
Reconcile Box 1d proceeds, which may be reported as gross proceeds or proceeds reduced by commissions and transfer taxes, against your broker statement and trade confirmations.
Step 3: Verify Cost Basis Reporting
Examine Box 1e for the cost or other basis reported by your broker. For covered securities with Box 5 unchecked, brokers are required to report the basis to the IRS. The basis amount generally includes purchase price plus commissions and transfer taxes. When Box 5 is unchecked, and Box 1e contains a basis amount, this information has been reported to the IRS and should match your records. If adjustments are needed, you must report them on Form 8949.
For securities acquired through the exercise of non-compensatory options granted or acquired on or after January 1, 2014, Box 1e reflects the basis adjusted to include the option premium.
Step 4: Assess Noncovered Security Status
Check Box 5 to determine whether securities are covered or noncovered. When Box 5 is checked, the securities sold are noncovered. The 2017 instructions define noncovered securities as stock purchased before 2011, stock in most mutual funds purchased before 2012, stock purchased in or transferred to a dividend reinvestment plan before 2012, debt acquired before 2014, options granted or acquired before 2014, and securities futures contracts entered into before 2014.
When Box 5 is checked, Box 1b, Box 1e, Box 1f, Box 1g, and Box 2 may be blank. You are responsible for determining and reporting your cost basis and holding period on Form 8949 and Schedule D using your purchase records.
Step 5: Review Gain and Loss Classification
Examine Box 1g for any amount of disallowed wash sale losses. The 2017 instructions direct you to Schedule D, Instructions for Form 8949, and Publication 550 for comprehensive details on wash sales. When Box 1g shows a disallowed loss, you cannot deduct that loss on your 2017 return. Instead, add the disallowed amount to the basis of the replacement securities you purchased within 30 days before or after the sale.
Review Box 2 to determine whether the transaction is classified as short-term gain or loss, long-term gain or loss, or ordinary income. If the ordinary box is checked, consult Publication 550 or Publication 1212 to determine whether special rules apply, such as treatment for contingent payment debt instruments or market discount provisions.
Step 6: Check Market Discount and Option Adjustments
Review Box 1f for codes and amounts. Box 1f may contain accrued market discount amounts or codes indicating special transaction types. Code C indicates collectibles subject to a maximum tax rate of 28 percent. Code W indicates the disallowance of losses from wash sales. Code D indicates market discount.
When Box 1f contains an accrued market discount amount, consult the 2017 Schedule D instructions, Instructions for Form 8949, and Publication 550 for proper treatment. For securities acquired through exercise of non-compensatory options granted or acquired on or after January 1, 2014, Box 1e includes basis adjusted for your option premium as a mandatory requirement. For options granted before January 1, 2014, your broker may have an adjusted basis, but was not required to do so.
Step 7: Report Federal Tax Withholding
Review Box 4 for federal income tax withheld through backup withholding. Backup withholding is required when you fail to furnish your taxpayer identification number to the payer or when the IRS notifies the payer of identification problems. The backup withholding rate for 2017 is 28 percent.
Include the Box 4 amount on your 2017 income tax return as federal income tax withheld. Verify the backup withholding amount against your broker records and Form W-9 status to ensure accuracy.
Step 8: Process Section 1256 Contracts
Review boxes 10 through 13 if your form reports regulated futures contracts, foreign currency contracts, or Section 1256 option contracts. Box 10 shows realized profit or loss on contracts closed during 2017. Box 11 displays the year-end adjustment for contracts that were open as of December 31, 2016, reconciling prior-year mark-to-market amounts with actual results upon those contracts’ closure or re-marking to market in 2017.
Box 12 shows unrealized profit or loss on contracts still open on December 31, 2017, which are marked to market and treated as closed on that date for tax purposes. Box 13 displays the aggregate profit or loss, calculated by combining the results from Boxes 10, 11, and 12.
Report the Box 13 amount on Form 6781, which applies special Section 1256 treatment, classifying 60 percent of gain or loss as long-term and 40 percent as short-term, regardless of actual holding period.
Step 9: Handle Loss Limitations
Check Box 15 carefully. When Box 15 is checked, it indicates that loss is not allowed based on the amount reported in Box 1d. This typically occurs with reportable changes in control or capital structure where tax law prohibits loss recognition.
When Box 15 is checked, you cannot claim the loss on your tax return. Consult the separate broker statement for details about the corporate action and any allowable loss information. Refer to the 2017 Form 8949 and Schedule D instructions for proper reporting of gains from these transactions.
Step 10: Compile and Report
Collect copies of all broker statements, trade confirmations, and prior-year Forms 1099-B to verify basis and holding periods. Report each transaction on Form 8949 for 2017, selecting the applicable checkbox referenced on the Form 1099-B.
Part I of Form 8949 reports short-term transactions using checkboxes A, B, or C. Part II reports long-term transactions using checkboxes D, E, or F. For each transaction, enter the description from Box 1a, acquisition date from Box 1b or your records, sale date from Box 1c, proceeds from Box 1d, cost basis from Box 1e or your records, and any adjustments from Boxes 1f or 1g.
Transfer the Form 8949 totals to Schedule D and attach both forms to your Form 1040. Retain Form 1099-B and all supporting documentation for at least three years.
Special Considerations
Nonresident Aliens and Foreign Recipients
Nonresident aliens receiving broker proceeds may be subject to different withholding and reporting requirements. Your payer may have withheld federal income tax and filed Form 1042-S instead of or in addition to Form 1099-B. Consult the Instructions for Form 1042-S and Publication 515 for treatment of investment income from U.S. sources. Form 1099-B reports proceeds and gains at full amounts without treaty-based reductions. Tax treaty provisions may provide reduced rates or exemptions that you claim when filing your return.
Basis Reporting Responsibilities
For covered securities with Box 5 unchecked, brokers report their basis to the IRS in Box 1e, and you should generally use that amount when calculating gain or loss. However, you remain responsible for making any necessary adjustments not reflected in the broker’s reporting, such as wash sales involving multiple accounts or gift tax paid on gifted securities.
For noncovered securities with Box 5 checked, you must independently establish and report your cost basis on Form 8949 and Schedule D because the broker has not reported it to the IRS. Maintain comprehensive purchase records, including the date acquired, amount paid, and all corporate action adjustments.
Form 8949 Requirements
Most taxpayers must use Form 8949 to report transactions before entering totals on Schedule D. The Schedule D instructions provide limited exceptions for reporting certain transactions directly on Schedule D without Form 8949. Still, these exceptions apply only in specific circumstances. When in doubt, it's best to complete Form 8949 to ensure proper reporting.
Form 8949 allows you to make adjustments to amounts reported on Form 1099-B and provides a clear audit trail for the IRS to verify your calculations.
Collectibles Treatment
When Box 1f contains code C, the transaction involves collectibles such as art, antiques, stamps, coins, or precious metals. Collectibles gains are taxed at a maximum rate of 28 percent under the 2017 tax law, which is higher than the preferential rates applied to most long-term capital gains. Report collectibles transactions on the appropriate line of Schedule D and consult Publication 550 for comprehensive guidance on collectibles treatment and holding period requirements.
Wash Sale Coordination
Brokers identify wash sales occurring within a single account and report disallowed losses in Box 1g. However, brokers cannot track wash sales across multiple accounts you maintain with the same broker or with different brokers. You must review all your trading activity across all accounts to identify additional wash sales and make the necessary adjustments when preparing your return. Publication 550 provides detailed guidance on identifying substantially identical securities and calculating the 30-day window before and after each sale.
This checklist provides comprehensive guidance for accurately reporting 2017 Form 1099-B transactions, ensuring compliance with IRS requirements and proper treatment of capital gains, losses, and derivative contracts under established tax rules.
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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.

