Form 1099-B Tax Year 2016 Recipient Checklist
Overview and Context
Form 1099-B for tax year 2016 requires reconciliation of covered securities with basis reporting to the IRS. Covered securities include stock acquired in 2011 or later, mutual fund shares acquired in 2012 or later, and debt instruments and options acquired in 2014 or later years. The form reports Section 1256 contract aggregate results in boxes 10 through 13 for regulated futures, foreign currency, and option contracts, which are then reported on Form 6781 for special tax treatment.
Programs Not Applicable
No stimulus reconciliation, Affordable Care Act shared responsibility provisions, or other 2016-specific above-the-line adjustments apply to Form 1099-B reporting. The form structure remains stable in 2016 with no major schedule redesigns affecting recipients. The focus remains on accurately reporting broker and barter exchange transactions, adhering to established capital gains and derivative contract frameworks.
Ten-Step Compliance Checklist
Step 1: Verify Account Identification
Confirm that your taxpayer identification number appears correctly on Copy B received from your broker. The form may display only the last four digits of your Social Security number, Individual Taxpayer Identification Number, Adoption Taxpayer Identification Number, or Employer Identification Number for privacy protection, but the payer reports your complete number to the IRS. Cross-check this information against your prior-year forms to ensure consistency and prevent identification mismatches that could trigger IRS notices.
Step 2: Gather All Forms and Statements
Collect all Form 1099-B copies received by February 15, 2017, including Copy B for your records and any state copies required by your state tax authority. Obtain separate broker statements detailing transactions with incomplete reporting on the Form 1099-B.
Request clarification from your broker regarding any losses on reportable changes in control or capital structure indicated by Box 15 being checked, as these losses require special handling and cannot be deducted based solely on the proceeds shown in Box 1d.
Step 3: Identify Transaction Classification
Determine whether each transaction represents short-term gain or loss, long-term gain or loss, or ordinary income according to Box 2. Short-term transactions involve securities held one year or less, while long-term transactions involve securities held more than one year.
Review Form 8949 instructions to confirm the applicable checkbox for each transaction type. If Box 2 shows ordinary income classification, consult Publication 550 or Publication 1212 to determine whether special rules apply, such as those governing contingent payment debt instruments or market discount treatment.
Step 4: Assess Covered and Noncovered Status
Examine Box 5 to determine whether securities are covered or non-covered. When Box 5 is unchecked, the security is covered, and the broker reports the basis in Box 1e to the IRS. When Box 5 is checked, the security is noncovered, typically including stock purchased before 2011, mutual fund shares purchased before 2012, debt acquired before 2014, options granted or acquired before 2014, or dividend reinvestment plan shares purchased before 2012.
For non-covered securities, boxes 1b, 1e, 1f, 1g, and Box 2 may be blank, requiring you to obtain basis information from your records or separate broker statements.
Step 5: Adjust for Market Discount and Wash Sales
Check Box 1f for accrued market discount amounts. When present, consult Schedule D instructions and Publication 550 to determine the proper basis adjustment and whether the market discount should be included in current income or deferred to future years. Review Box 1g for wash sale loss disallowance amounts.
When Box 1g shows a disallowed loss, you cannot deduct that loss on your 2016 return. Instead, add the disallowed amount to the basis of the replacement securities you acquired within 30 days before or after the sale. This preserves the economic loss for recognition when you eventually sell the replacement securities.
Step 6: Report Proceeds and Withholding
Enter the proceeds from Box 1d on Form 8949 or Schedule D as instructed. The amount shown in Box 1d may represent gross proceeds or proceeds reduced by commissions, transfer taxes, and option premiums, depending on the broker’s record-keeping method. Checkboxes within Box 1d indicate which approach the broker used.
If Box 4 contains a backup withholding amount, include that amount on your 2016 Form 1040 as federal income tax withheld. Backup withholding occurs when you fail to provide a valid taxpayer identification number or when the IRS notifies the broker of identification problems.
Step 7: 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 2016. Box 11 displays the year-end adjustment for open contracts as of December 31, 2015, reconciling the prior year's mark-to-market treatment with actual results. Box 12 shows unrealized profit or loss on contracts still open on December 31, 2016, which are marked to market and treated as closed for tax purposes. Box 13 displays the aggregate profit or loss, calculated by combining the amounts from Boxes 10, 11, and 12.
Report the Box 13 amount on Form 6781, which applies special tax treatment, classifying 60 percent of gain or loss as long-term and 40 percent as short-term, regardless of the actual holding period.
Step 8: Handle Corporate Actions
When Box 1a identifies a corporation undergoing a reportable change in control or capital structure, and Box 1d shows the aggregate cash and fair market value of property you received, recognize any required gain according to broker notification and tax rules. Review Box 15 carefully. When Box 15 is checked, you cannot deduct losses based on the amount shown in Box 1d.
The broker must provide a separate statement explaining the corporate action and identifying any nondeductible losses. Consult Form 8949 instructions and Publication 550 for proper treatment of gains and losses from corporate reorganizations.
Step 9: Complete Form 8949 and Schedule D
Compile all Form 1099-B entries and prepare Form 8949 to report your capital asset sales. Organize transactions by the applicable Form 8949 checkbox indicated on each 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, the acquisition date from either Box 1b or your records, the sale date from Box 1c, the proceeds from Box 1d, the cost basis from either Box 1e or your records, and any adjustments from either Box 1f or 1g. Transfer the Form 8949 totals to Schedule D and attach both forms to your Form 1040.
Step 10: File Your Return
Sign and date your 2016 Form 1040, along with all attached schedules, by April 18, 2017, or your applicable extension deadline. The standard April 15 deadline is extended to April 18, 2017, due to Emancipation Day, which is observed in the District of Columbia. File your complete return with the IRS at the address designated in the 2016 Form 1040 instructions based on your state of residence and whether you are enclosing payment. Retain Copy B of all Forms 1099-B and supporting broker statements with your tax records for at least three years.
Keep additional documentation for complex transactions or those involving non-covered securities for which you determined the basis from personal records.
Important Form Details
Basis Reporting Requirements
Brokers must report cost basis in Box 1e for covered securities. The basis amount includes purchase price plus commissions and transfer taxes. For securities acquired through the exercise of non-compensatory options granted or acquired on or after January 1, 2014, brokers must adjust the basis to include option premiums.
For non-compensatory options granted or acquired before January 1, 2014, brokers may, but are not required to, adjust the basis for option premiums. Compensatory options do not include option-related amounts in the basis because those amounts are already reported as compensation on Form W-2.
Proceeds Reporting Methods
Brokers may report gross or net proceeds after reducing commissions, transfer taxes, and option premiums. Checkboxes within Box 1d indicate which method the broker used. Understanding the reporting method helps you calculate gain or loss accurately. When proceeds are reported net of costs, you should not separately deduct those costs when calculating your taxable gain or loss. Consistency between the broker’s reporting and your tax return calculations prevents discrepancies that trigger IRS inquiries.
Holding Period Determination
Box 2 indicates whether any gain or loss is short-term or long-term. For covered securities, brokers determine the holding period from the acquisition date in Box 1b to the sale date in Box 1c. The holding period begins on the day after acquisition and extends to the sale date. Securities held for one year or less generate short-term capital gain or loss taxed at ordinary income rates. Securities held for more than one year generate long-term capital gains or losses, which are eligible for preferential tax rates. For non-covered securities with Box 5 checked, Box 2 may be blank, and you must determine the holding period from your personal records.
Loss Limitations
Box 15 serves as a critical indicator for loss treatment. When checked, it means you cannot claim a loss on your tax return based on the gross proceeds shown in Box 1d. This typically occurs with certain corporate reorganizations, acquisitions of control, or substantial capital structure changes where tax law prohibits loss recognition despite an apparent economic loss.
Your broker must provide a separate statement explaining why the loss is disallowed and may report any allowable loss through other means. Do not report disallowed losses on Form 8949 or Schedule D when Box 15 is checked.
Wash Sale Rules
Wash sales occur when you sell securities at a loss and purchase substantially identical securities within 30 days before or after the sale. The loss is temporarily disallowed and added to the basis of the replacement securities. Box 1g shows wash sale loss disallowance amounts that brokers identify within a single account.
However, brokers cannot track wash sales across multiple accounts or different brokerage firms. You must review all your trading activity to identify any additional wash sales and make the necessary adjustments when preparing your return. Publication 550 provides comprehensive guidance on identifying and reporting wash sales.
This checklist gives you all the information you need to correctly report your 2016 Form 1099-B transactions, making sure you follow IRS rules and handle capital gains, losses, and derivative contracts properly.
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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.

