Form 1099-B is one of the few 1099 forms that can show not just how much money changed hands, but also whether the IRS receives cost basis and holding-period details for the transaction. That makes it especially important for brokers and barter exchanges handling sales, redemptions, exchanges, or barter activity.
Keep reading to understand in more detail Form 1099-B requirements for 2026, including who must file, what transactions to report, which details belong on the form, and when recipient and IRS copies are due.
What Is Form 1099-B?
The IRS title for Form 1099-B is “Proceeds From Broker and Barter Exchange Transactions”, which is a long way of saying that the form tracks certain sales and exchanges handled by brokers or barter exchanges. Taxpayers use the information on it to report capital gains, capital losses, or barter income on their returns.
You will often see this form tied to investment activity, including stocks, bonds, mutual fund shares, options, commodities, and futures contracts. It can also cover certain debt instruments, currency contracts, corporate actions, and barter exchanges.
Who Must File Form 1099-B?
For Form 1099-B, a transaction is generally reportable when a broker handles a sale or exchange of securities, commodities, regulated futures contracts, foreign currency contracts, forward contracts, debt instruments, options, securities futures contracts, or similar assets for cash. Form 1099-B can also apply to barter exchange transactions, certain Form 8806 corporate actions, and QOF dispositions.
As a general rule, a broker or barter exchange must file Form 1099-B for each person for whom it handled a reportable sale, exchange, or qualifying corporate action.
| Filer type | When Form 1099-B may be required |
|---|---|
| Broker | Selling a customer’s stocks, commodities, regulated futures contracts, foreign currency contracts, forward contracts, debt instruments, options, securities futures contracts, or similar assets for cash |
| Barter exchange | A member exchanges property or services through the barter exchange |
| Broker processing corporate actions | A customer receives cash, stock, or other property from an acquisition of control or substantial change in capital structure reportable on Form 8806 |
| QOF reporting a disposition | A disposition of an interest in a Qualified Opportunity Fund must be reported, even if the QOF is not a broker or barter exchange and does not know that one already reported it |
The shorthand version is that if your business is a broker, barter exchange, or QOF that handled a reportable sale, exchange, qualifying corporate action, or QOF disposition, you generally need to file Form 1099-B.
1099-B Requirements by Transaction Type
Rather than starting with form boxes, it’s easier to start with the transaction itself. Use this checklist to see what belongs on the form and where to focus.
| Transaction type | Report on 1099-B? | Key filing focus |
|---|---|---|
| Broker-handled stock sale | Yes | Property description, sale date, proceeds, and basis and holding term when required |
| Mutual fund or ETF sale | Yes | Basis and short- or long-term reporting when required |
| Bond or debt instrument sale | Yes | Proceeds and basis when required, with accrued market discount or wash-sale loss details where relevant |
| Options trade | Yes, if reportable | Contract specifics, proceeds, basis, and the closing date |
| Regulated futures contract | Yes | Reported on an aggregate basis, including realized, unrealized, and aggregate profit or loss amounts |
| Barter exchange trade | Yes | Cash received added to the fair market value of property or services received through the exchange |
| Corporate acquisition or capital change | Yes, when the broker knows or has reason to know the transaction is reportable | Cash, stock, or other property the customer received from a Form 8806-reportable corporate action |
| Digital asset sale | Generally, Form 1099-DA instead; Form 1099-B may apply only in limited exceptions | For 2026, use Form 1099-DA for most broker-reported digital asset sales, unless a Form 1099-B exception applies |
Key Form 1099-B Boxes Filers Should Understand
The form has plenty of boxes, but most filing mistakes cluster around a handful of them, mainly dates, proceeds, basis, and how the transaction is classified.
| Box | What it reports | Why it matters |
|---|---|---|
| Box 1a | The property sold | Pins down exactly what changed hands |
| Box 1b | Acquisition date | Helps support the short-term or long-term classification when the date is required |
| Box 1c | Date sold or disposed of | Marks when the sale actually happened |
| Box 1d | Proceeds | The sale proceeds, reduced by related commissions and transfer taxes |
| Box 1e | Cost or other basis | The adjusted basis used to work out gain or loss, when basis reporting is required |
| Box 1f | Accrued market discount | Relevant for some debt instruments |
| Box 1g | Wash sale loss disallowed | Shows the nondeductible loss in a wash sale transaction |
| Box 2 | Short-term, long-term, or ordinary | Sets the transaction’s classification |
| Box 4 | Federal income tax withheld | Comes into play with backup withholding |
| Boxes 8–11 | Regulated futures, foreign currency, and Section 1256 option contracts | Show realized, unrealized, and aggregate profit or loss amounts |
| Box 13 | Bartering | Cash received plus the FMV of property, services, trade credits, or scrip credited by the exchange |
| Boxes 14–16 | State information | Cover the state, filer’s state ID number, and any state tax withheld |
Is There a 1099-B Threshold?
Form 1099-B behaves differently from forms like 1099-MISC or 1099-NEC, where the filing decision often begins with a simple dollar threshold. For brokers and barter exchanges, the requirement is tied to the type of transaction and the person it was handled for, though some exceptions apply, such as certain exempt recipients and small barter exchanges under $1.
In practice, that means you shouldn’t assume a small broker transaction can be ignored just because the dollar amount is low. The more useful question to ask is whether this was a reportable broker or barter exchange transaction in the first place.
Form 1099-B Deadlines
Form 1099-B gives you a slightly later recipient deadline than many other 1099 forms.
| Filing task | Statutory deadline | Deadline for 2026 returns to be filed in 2027 |
|---|---|---|
| Send the recipient their copy | February 15 | February 15, 2027 |
| Submit Copy A on paper to the IRS | February 28 | March 1, 2027 |
| eFile with the IRS | March 31 | March 31, 2027 |
Note: If a deadline falls on a Saturday, Sunday, or legal holiday, the due date moves to the next business day. For 2027, February 28 falls on a Sunday, so the paper filing deadline moves to March 1, 2027.
OBBBA Update: Does It Change Form 1099-B Requirements?
The One Big Beautiful Bill Act (OBBBA) did not broadly replace the core Form 1099-B broker and barter exchange reporting rules.
For brokers, the main 2026 filing issue to watch is digital asset reporting. For 2026 transactions, brokers generally report digital asset sales on Form 1099-DA rather than Form 1099-B when the transaction is covered by the digital asset reporting rules. If your business handles crypto or other digital asset sales, confirm whether the transaction belongs on Form 1099-DA or one of the limited Form 1099-B exceptions applies.
Common Form 1099-B Filing Mistakes to Avoid
Review the form for these issues before filing:
- Wrong reporting test: A Form 1099-B filing decision should start with whether the broker, barter exchange, or QOF handled a reportable transaction, not whether the transaction met a simple income threshold.
- Digital asset mix-ups: Some digital asset sales may belong on Form 1099-DA instead of Form 1099-B.
- Basis gaps: Covered securities may require adjusted basis, not just gross proceeds.
- Date errors: Acquisition and sale dates need to match the broker’s transaction records.
- Term mismatch: Short-term, long-term, or ordinary treatment can be wrong if the holding-period details are not checked.
- Box 4 missed: Backup withholding belongs in Box 4 when federal income tax was withheld.
- Missed barter activity: Barter exchange transactions can be reportable and should not be left off the form.
- State details left out: State information may be needed when state tax was withheld or direct state reporting applies.
- Wrong filing method: Paper filing is not an option when the filer meets the 10-return electronic filing threshold.
How to File Form 1099-B Online
Filing Form 1099-B online takes a lot of the manual weight out of preparing broker and barter exchange returns. With 1099Online, you can enter payer and recipient details, complete the required transaction fields, review the form, and eFile with the IRS.
Online filing can ease the burden of collecting and entering data manually, as well as reduce the time it takes between filing and IRS acceptance. It can also reduce rejection risk when the platform checks required fields before filing. That’s important because each transaction can carry several data points and even one missing date, basis amount, or transaction indicator can confuse the recipient and raise the odds of a correction later.
FAQs
1. Who needs to file Form 1099-B?
Brokers, barter exchanges, and QOFs generally file Form 1099-B for reportable sales, exchanges, barter transactions, qualifying corporate actions, or QOF dispositions.
2. Is there a minimum threshold for Form 1099-B?
No. Form 1099-B is based on the type of reportable transaction, so there is no general payment threshold. However, specific exceptions can apply.
3. When is Form 1099-B due?
Recipient copies are generally due February 15, paper filing with the IRS is due February 28, and eFiling is due March 31. For 2026 returns filed in 2027, the paper deadline moves to March 1, 2027, because February 28 falls on a Sunday.
Form 1099-B reporting has too many details for guesswork. 1099Online helps you organize the required fields and eFile your returns on time.