A combined tax statement for 1099 forms is a single packet your brokerage sends each year that bundles several IRS information returns, usually Form 1099-INT, Form 1099-DIV, and Form 1099-B, with 1099-OID, 1099-MISC, or 1099-NEC sections added when they apply.1Internal Revenue Service. About Form 1099-B, Proceeds from Broker and Barter Exchange Transactions Your job is to carry each section to the right place on your return. The sections are labeled with IRS form numbers, and the numbered boxes inside each section match the boxes on the official form the IRS already has on file from your broker. If what you report doesn’t match, an IRS matching program will flag it, so the numbers need to come across exactly.
When It Arrives and Whether to Wait
Brokerages are not required to mail consolidated statements until mid-February, and complex ones often arrive in early March. Accounts holding mutual funds, REITs, or partnerships depend on income reclassifications that trickle in from those entities after year-end, and corrected statements routinely go out from late February through early April as fund companies finalize allocations.
If you file and then receive a corrected statement that changes your tax liability, you will generally need to file Form 1040-X to amend.2Internal Revenue Service. Topic No. 154, Form W-2 and Form 1099-R (What to Do if Incorrect or Not Received) The cleaner move is to hold off until your brokerage marks the statement final, especially if your account has produced corrections in prior years. Most brokerages note on the statement or on their website whether another correction cycle is expected.
Reporting the Interest Section (1099-INT and 1099-OID)
Start with Box 1 of the 1099-INT section, which shows your total taxable interest. If your combined taxable interest from all sources is more than $1,500, list each payer and amount on Schedule B (Form 1040) and carry the total to your 1040.3Internal Revenue Service. About Schedule B (Form 1040), Interest and Ordinary Dividends Below that threshold, the interest still goes on your 1040, but you skip the Schedule B detail.
A 1099-OID section represents the annual portion of discount on bonds you bought below face value, and it counts as interest income. Report Box 1 from that section on Schedule B, line 1 alongside your other interest.4Internal Revenue Service. Instructions for Schedule B (Form 1040) If you paid more than the original issue price (acquisition premium), the OID may be reduced, and your statement should already reflect that adjustment.
Tax-Exempt and Private Activity Bond Interest
Box 8 of the 1099-INT section shows tax-exempt interest, usually from municipal bonds. It isn’t taxed federally, but you still report it on Form 1040 line 2a because the IRS uses it to decide whether other income, particularly Social Security benefits, becomes taxable.5Internal Revenue Service. Internal Revenue Service Form 1099-INT Box 9 shows interest from specified private activity bonds. That interest is generally tax-exempt for regular income tax but can trigger the Alternative Minimum Tax, so a significant Box 9 figure means you may need to complete Form 6251.
Reporting the Dividend Section (1099-DIV)
Box 1a shows total ordinary dividends, and the full amount goes on your Form 1040 (and on Schedule B if your total ordinary dividends exceed $1,500).6Internal Revenue Service. Instructions for Recipient – Form 1099-DIV Box 1b shows the portion of those dividends that qualify for the lower long-term capital gains rates of 0%, 15%, or 20%. Box 1b is a subset of Box 1a, not an additional amount. The qualified figure flows into the Qualified Dividends and Capital Gain Tax Worksheet in the 1040 instructions, which applies the preferential rate.
Section 199A REIT Dividends
Box 5 shows Section 199A dividends, typically from real estate investment trusts. These qualify for a deduction of up to 20% of the amount received, claimed on Form 1040 through the qualified business income deduction worksheets, and you do not have to itemize to take it.7Internal Revenue Service. Qualified Business Income Deduction If you hold REIT funds in a taxable account, skipping this box leaves money on the table.
Substitute Payments Hide in the 1099-MISC Section
If your brokerage lends out shares in a margin account, you may receive substitute payments instead of actual dividends. These show up in Box 8 of the 1099-MISC section of your consolidated statement, not in the 1099-DIV section.8Internal Revenue Service. Instructions for Forms 1099-MISC and 1099-NEC They do not qualify for the lower qualified dividend rates and are taxed as ordinary income at your full marginal rate, even if the underlying stock would have paid a qualified dividend.
Foreign Taxes in Box 7
Box 7 of the 1099-DIV section shows foreign taxes withheld on dividends from international investments.6Internal Revenue Service. Instructions for Recipient – Form 1099-DIV You can deduct the amount on Schedule A or claim it as a credit, and the credit is almost always better because it cuts tax dollar for dollar. If the total foreign tax you are claiming as a credit is $300 or less ($600 or less if married filing jointly), you can claim it directly on Form 1040 without any additional forms.9Internal Revenue Service. Instructions for Form 1116 Above those thresholds, you will generally need Form 1116.
Reporting the Securities Section (1099-B)
The 1099-B section is usually the longest part of the statement and the one where mistakes happen most. Every security you sold during the year appears here, and the data feeds Form 8949 and Schedule D.
The Shortcut Many Investors Can Use
Before entering individual transactions, check whether you qualify for the aggregation exception. If basis was reported to the IRS (covered securities) and no adjustments are needed, no wash sales, no basis corrections, you can skip Form 8949 and enter the summarized totals directly on Schedule D, line 1a for short-term or line 8a for long-term.10Internal Revenue Service. Form 8949 – Sales and Other Dispositions of Capital Assets Your consolidated statement usually provides those aggregated totals in a summary section.
When You Need Form 8949
If any transactions need adjustments, involve non-covered securities, or include wash sale disallowances, you need Form 8949. The form splits into Part I for short-term holdings (one year or less) and Part II for long-term holdings (more than one year), and within each part you check a box to categorize each group of transactions:11Internal Revenue Service. Instructions for Form 8949 Sales and Other Dispositions of Capital Assets
- Box A (short-term) or Box D (long-term): basis was reported to the IRS. Both you and the IRS have the same cost basis figure.
- Box B or Box E: basis was not reported to the IRS, and you must supply it from your own records.
- Box C or Box F: transactions not reported on any Form 1099-B, such as private sales.
- Boxes G through L: the same categories for digital asset transactions reported on Form 1099-DA.
Enter the total proceeds, total cost basis, and any adjustments for each group. The net results carry to Schedule D, which combines short-term and long-term figures into a single net gain or loss.
Covered Versus Non-Covered Securities
Your statement flags each transaction as “covered” or “non-covered.” For covered securities, the broker was required to report your cost basis to the IRS, so the proceeds and basis on your statement should match what the IRS already has.12Internal Revenue Service. Instructions for Form 1099-B For non-covered securities, the broker only reports sale proceeds. If you don’t supply the correct basis on Form 8949, the IRS will treat the entire sale price as gain. Dig up original purchase confirmations, reinvested dividend records, and corporate action history (splits, mergers, spin-offs) to reconstruct the basis.
The $3,000 Capital Loss Limit
If your total capital losses exceed your total capital gains, you can deduct up to $3,000 of the net loss against your other income, or $1,500 if married filing separately.13Internal Revenue Service. Topic No. 409, Capital Gains and Losses Any excess carries forward to future tax years indefinitely and keeps its character: short-term stays short-term, long-term stays long-term, applied on next year’s Schedule D.
Wash Sale Adjustments
The most common adjustment on a consolidated statement is a wash sale disallowance. If you sell a security at a loss and buy a substantially identical security within 30 days before or after the sale, you can’t deduct the loss right away.14Office of the Law Revision Counsel. 26 USC 1091 – Loss From Wash Sales of Stock or Securities The statement identifies the disallowed amount in the 1099-B detail.
The loss isn’t lost. It gets added to the cost basis of the replacement security. On Form 8949, report the transaction using Box C (short-term) or Box F (long-term), enter adjustment code “W,” and add the disallowed amount to basis.15Internal Revenue Service. Income – Capital Gain or Loss Workout When you later sell the replacement security without triggering another wash sale, the deferred loss comes through as a smaller gain or larger loss.
One wrinkle your broker can’t see: wash sales across different accounts. If you sell a stock at a loss in your taxable account and buy the same stock within 30 days in your IRA, the loss is still disallowed, but your consolidated statement won’t flag it because the broker only sees one account. Tracking those is on you.
The 3.8% Net Investment Income Tax
All the investment income you just reported, interest, dividends, and capital gains, may be subject to an additional 3.8% Net Investment Income Tax if your modified adjusted gross income exceeds:16Internal Revenue Service. Topic No. 559, Net Investment Income Tax
- $200,000 for single or head of household filers
- $250,000 for married filing jointly
- $125,000 for married filing separately
These thresholds are not adjusted for inflation, so more taxpayers cross them each year. The 3.8% applies to the lesser of your net investment income or the amount by which your modified adjusted gross income exceeds the threshold, calculated on Form 8960.17Internal Revenue Service. 2025 Instructions for Form 8960 If you are anywhere near these levels, add this before assuming the consolidated statement tells you your full bill.
What You Can’t Deduct
Your consolidated statement may list investment advisory fees, custodial charges, or other account expenses. Under current law, miscellaneous investment expenses are non-deductible for individual taxpayers. If your statement shows those fees, they have no effect on your return.