A 1099 composite is a single packet your brokerage firm assembles that bundles every Form 1099 your investment account generated during the year into one organized document. Instead of receiving separate mailings for interest, dividends, and securities sales, you get one statement to work from at tax time. Your brokerage sends the same information to the IRS, so the agency already has every figure on it before you file.
What’s Inside the Statement
A composite is not its own IRS form. It’s a brokerage-created package that wraps several standard 1099s together. The forms you’ll most commonly find inside are:
- 1099-INT for interest earned from bonds, bank deposits, certificates of deposit, and similar fixed-income holdings.
- 1099-DIV for dividends from stocks, ETFs, mutual funds, and REITs, plus any capital gain distributions.
- 1099-B for proceeds and cost basis from every sale or exchange of securities during the year.
- 1099-OID for original issue discount on bonds purchased below face value.
- 1099-MISC for items like royalties or substitute payments in lieu of dividends.
Most composites also include supplemental pages that are not part of the official IRS forms. These pages often list cost basis for older securities, unrealized gains and losses, and a summary of tax-exempt income. The supplemental section matters most when you hold non-covered securities whose basis the brokerage wasn’t required to report to the IRS.
When to Expect It and What Corrections Mean
Brokerages must furnish your composite by February 17, 2026 for the 2025 tax year.1Internal Revenue Service. General Instructions for Certain Information Returns (2025) That deadline applies specifically to statements that include a 1099-B, which covers nearly every investment account with trading activity. If the brokerage needs more time, it can request up to 30 extra days from the IRS.
Corrected composites are common. Mutual funds sometimes reclassify distributions weeks after the original mailing, forcing the brokerage to issue a revised statement. If a corrected composite arrives after you’ve already filed, compare every figure against your return. When the corrected numbers change your tax liability, file Form 1040-X to amend.2Internal Revenue Service. Instructions for Form 1040-X You generally have three years from the original filing date to submit the amendment for a refund.
Reporting Interest From the 1099-INT Section
The 1099-INT section feeds directly into Schedule B of your Form 1040. You’re required to file Schedule B if your total taxable interest or ordinary dividends for the year exceed $1,500.3Internal Revenue Service. Instructions for Schedule B (Form 1040)
Box 1 reports your taxable interest, including income from corporate bonds, Treasury securities, CDs, and bank accounts. This amount transfers to Schedule B and ultimately to your Form 1040. Box 8 reports tax-exempt interest, primarily from municipal bonds. That amount is not taxable at the federal level and does not go on Schedule B, but the IRS still wants to see it, so you report it on line 2a of Form 1040 for informational purposes.3Internal Revenue Service. Instructions for Schedule B (Form 1040) Many states tax interest from bonds issued by other states, even though the federal government doesn’t.
Reporting Dividends From the 1099-DIV Section
The 1099-DIV section deserves careful reading because different types of dividends are taxed at different rates. All dividend figures go on Schedule B if they exceed the $1,500 threshold, but how they flow to the rest of your return varies.
Ordinary and Qualified Dividends
Box 1a shows your total ordinary dividends, taxed at your regular income tax rate.4Internal Revenue Service. Form 1099-DIV Dividends and Distributions Box 1b shows the subset of those dividends that qualify for the lower long-term capital gains rates. Box 1b is always included within Box 1a, not added on top of it. Most dividends from large domestic companies will be qualified. REIT dividends and short-holding-period dividends typically won’t be.
Capital Gain Distributions
Box 2a reports capital gain distributions from mutual funds and REITs. These are long-term capital gains the fund realized by selling appreciated holdings inside the fund. Even though you didn’t sell your own shares, the IRS treats this income as your long-term gain. Report Box 2a directly on Schedule D, line 13.5Internal Revenue Service. Mutual Funds Costs Distributions etc
Section 199A Dividends
Box 5 reports Section 199A dividends, which are ordinary dividends paid by REITs or by mutual funds that hold REITs. These can qualify for the 20% qualified business income deduction under Section 199A, which effectively reduces the tax rate on that income.6Internal Revenue Service. Instructions for Form 1099-DIV The Box 5 amount is already included in Box 1a. If your composite shows a figure in Box 5, make sure your tax software or preparer applies the deduction. The savings can be substantial and the box is easy to overlook.
Reporting Sales From the 1099-B Section
The 1099-B section is where most of the complexity lives. It lists every sale or exchange of securities in your account, along with the date acquired, date sold, proceeds, and (for covered securities) your cost basis. This data goes onto Form 8949, which feeds summary totals to Schedule D.7Internal Revenue Service. About Form 8949, Sales and other Dispositions of Capital Assets
The holding period drives your tax rate. If you held the security for one year or less, any gain is short-term and taxed at your ordinary income rate. Hold it longer than one year and the gain is long-term, qualifying for the preferential capital gains rates of 0%, 15%, or 20% depending on your income.8Internal Revenue Service. Topic No. 409, Capital Gains and Losses
Covered vs. Non-Covered Securities
Your composite splits transactions into categories based on whether the brokerage reported your cost basis to the IRS. Stocks and ETFs are covered if acquired on or after January 1, 2011; mutual fund and DRIP shares if acquired on or after January 1, 2012; and bonds and options if acquired on or after January 1, 2014, with more complex instruments covered starting in 2016. For covered securities, the brokerage reports your cost basis in Box 1e of the 1099-B and sends it to the IRS.9Internal Revenue Service. Instructions for Form 1099-B (2026) For non-covered securities, Box 1e may be blank. You’re responsible for entering the correct basis yourself, usually from your own records or from the supplemental pages of the composite.
When You Can Skip Form 8949
If you have covered securities where the basis was reported to the IRS and no adjustments appear in Box 1f or 1g, the IRS lets you skip Form 8949 for those transactions. Report the aggregate short-term totals directly on Schedule D, line 1a, and long-term totals on line 8a.10Internal Revenue Service. 2025 Instructions for Schedule D (Form 1040) This shortcut can save pages of paperwork if you had dozens of trades during the year. Any transaction that needs an adjustment or lacks reported basis still goes through Form 8949 line by line.
Wash Sales
A wash sale happens when you sell a security at a loss and then buy the same or a substantially identical security within 30 days before or after that sale.11Internal Revenue Service. Link and Learn Taxes – Case Study 1 Wash Sales The IRS disallows the loss on that sale. Your brokerage reports the disallowed amount in Box 1g of the 1099-B.9Internal Revenue Service. Instructions for Form 1099-B (2026)
The disallowed loss isn’t gone forever. It gets added to the cost basis of the replacement shares, so you’ll recognize it when you eventually sell those. On Form 8949, list the wash sale transaction with code “W” in column (f) and enter the disallowed amount as a positive number in column (g).12Internal Revenue Service. 2025 Instructions for Form 8949
One wrinkle that catches active traders: your brokerage only tracks wash sales within a single account. If you sell at a loss in one account and buy the same stock in another account or in your IRA within the 30-day window, the brokerage won’t flag it on your 1099-B. You’re still responsible for making the adjustment yourself on Form 8949.
Capital Loss Limit
If your capital losses for the year exceed your capital gains, you can deduct the excess against your ordinary income, but only up to $3,000 per year, or $1,500 if you’re married filing separately.13Office of the Law Revision Counsel. 26 USC 1211 – Limitation on Capital Losses Any remaining loss carries forward to future tax years indefinitely. The composite gives you the raw data but won’t calculate this limit for you, and any carried-forward losses from prior years won’t appear on it because the brokerage doesn’t track them.
Foreign Tax Credit and Backup Withholding
Box 7 of the 1099-DIV section shows foreign taxes withheld on dividends from international investments.4Internal Revenue Service. Form 1099-DIV Dividends and Distributions You can claim this as either a deduction on Schedule A or a credit on your return. The credit is almost always the better deal because it reduces your tax dollar for dollar rather than just lowering your taxable income. If the total foreign tax paid is $300 or less ($600 on a joint return) and all of it was reported on your 1099 statements, you can claim the credit directly on Schedule 3, line 1 without filing Form 1116.14Internal Revenue Service. Foreign Tax Credit – How to Figure the Credit Above that threshold, you’ll need to complete Form 1116.
If you see an amount in Box 4 of the 1099-INT, 1099-DIV, or 1099-B sections, your brokerage withheld federal income tax at a flat 24% rate.15Internal Revenue Service. Backup Withholding This usually happens because of a missing or incorrect taxpayer identification number, or because the IRS previously notified the brokerage that you underreported interest or dividends.16Internal Revenue Service. Topic no. 307, Backup Withholding Report the withheld amount on your Form 1040 as a tax payment. It works like any other withholding credit.
What Won’t Be on Your Composite
Not every investment reports through a 1099, and some of the common exceptions catch people who expect everything in one document.
If you own shares in a partnership, master limited partnership, or S corporation, your share of income and deductions comes on a Schedule K-1 rather than a 1099.17Internal Revenue Service. Partners Instructions for Schedule K-1 (Form 1065) K-1s often arrive later than composites, sometimes not until March or April, which can delay your filing.
Cryptocurrency and other digital asset transactions are reported on the new Form 1099-DA. As of 2026, brokers of digital assets must furnish Form 1099-DA to customers.18Internal Revenue Service. Treasury, IRS Issue Proposed Regulations to Make It Easier for Digital Asset Brokers to Provide 1099-DA Statements Electronically Whether your brokerage includes these in the same composite package as your traditional 1099 forms depends on the firm. Either way, capital gains reporting works the same as securities sales: the data goes on Form 8949 and flows to Schedule D.
What Happens If You Get It Wrong
Because the IRS receives a copy of your composite, its automated matching system will flag discrepancies. The most common mistake is simply leaving income off your return. The IRS considers omitting income shown on a 1099 to be a textbook example of negligence.19Internal Revenue Service. Accuracy-Related Penalty
The accuracy-related penalty is 20% of the underpayment caused by the error, on top of the tax you owe plus interest.19Internal Revenue Service. Accuracy-Related Penalty A separate penalty applies for a substantial understatement, which for individuals means understating your tax by the greater of 10% of the correct tax or $5,000.
If a corrected composite arrives after you’ve filed and the new figures change your tax, file Form 1040-X as soon as practical. Filing the amendment voluntarily, before the IRS catches the mismatch, generally avoids the negligence penalty. The same applies if you discover your own error, such as forgetting to report a small 1099-INT from a secondary bank account. Catching it first is always cheaper than waiting for the IRS notice.