VOIDPaper only: marks a form on a sheet that should be ignored. It is not a correction; a filed return is undone with a corrected return.How corrections workCORRECTEDChecked on a return that replaces one already filed. Which fields to repeat, and whether two returns are needed, depends on the error.Type 1 vs Type 2 correctionsPayer's nameThe filer's legal name as tied to its EIN on IRS records, on the first line; a trade name goes on the second. Filed under the wrong name the whole batch can fail to post.Check the filer blockCalendar yearThe year the payment was made, not the year you file. The 2026 forms cover payments in 2026 and are filed in 2027.The 2027 calendarPayer's street addressStreet or P.O. box of the filer, where the recipient can write about the form. Not matched against IRS records.Payer's room or suiteSecond address line, optional.Box 1a: Description of propertyWhat goes hereFor stock and debt: the issuer's name and the number of shares or units, with a class code for stock (C common, P preferred, O other). For an option, the underlier and the shares covered. For barter, the service or property provided.Watch forFutures and forwards are described as "RFC" or "digital asset RFC"; section 1256 options as "Section 1256 option." Name each type if one form covers several.Click to open the row in the box tablePayer's city or townCity of the filer's address. A foreign filer gives the city and leaves the state blank.Payer's telephone numberRequired: a number the recipient can call about the form, with area code. The recipient copy must carry it.Box 1b: Date acquiredWhat goes hereThe acquisition date of the securities sold. Required for a covered security.Watch forLeave it blank if the securities were acquired on various dates, or you check box 5 and choose not to complete it. For a short sale, use the acquisition date of the security delivered to close it.Click to open the row in the box tableBox 1c: Date sold or disposedWhat goes hereFor a broker sale, the trade date. For a barter exchange, the date cash, property, a credit or scrip is actually or constructively received.Watch forA short sale entered into after 2010 is reported for the year the security is delivered to close it, and box 1c shows that delivery date.Click to open the row in the box tablePayer's state or provinceTwo-letter state code for a U.S. address; the province for a foreign one.Payer's countryBlank or US for a domestic address; the country for a foreign filer.Payer's ZIP or postal codeFive or nine digits for a U.S. address; the foreign postal code otherwise.Box 1d: ProceedsWhat goes hereGross proceeds from the sale, reduced by commissions and transfer taxes. A loss, such as on closing a written option, goes in parentheses. Check box 6 to show whether option premiums were netted.ThresholdFractional shares sold for gross proceeds under $20 need no form.Watch forAccrued interest on a bond sold between payment dates goes on Form 1099-INT, not here. Leave out amounts in boxes 8 to 11.Click to open the row in the box tableBox 1e: Cost or other basisWhat goes hereThe adjusted basis of the securities sold. Required for covered securities: generally stock bought after 2010 (after 2011 for average-basis stock), and certain debt and options bought after 2013 or 2015.Watch forEnter -0- only if the basis really was zero. For a noncovered security with box 5 checked and no basis reported, leave it blank. Take into account transfer statements and Form 8937 issuer returns.Click to open the row in the box tablePayer's TINThe EIN the returns are filed under; it must match the filer name on the first line. A sole proprietor may use an SSN, with the owner's name first.Check the filer blockRecipient's TINWhat goes hereThe recipient's SSN, ITIN, ATIN or EIN. Request it on Form W-9; foreign recipients give the right Form W-8 instead.Watch forYou may truncate it on the recipient's statement, never on the copy filed with the IRS. The filer's TIN is never truncated.Match it before you fileBox 1f: Accrued market discountWhat goes hereThe accrued market discount on the debt instrument sold.Watch forRequired for covered securities. With box 5 checked you may leave it blank, or complete it without penalty exposure for errors.Click to open the row in the box tableBox 1g: Wash sale loss disallowedWhat goes hereLoss disallowed under the wash sale rules of section 1091.Required whenThe sale and the replacement purchase are covered securities with the same CUSIP number in the same account. Reporting other disallowed losses is optional.Watch forAdd the disallowed loss to the basis of the replacement shares. Example: a $400 loss with 75 of 100 shares bought back is $300 disallowed.Click to open the row in the box tableRecipient's nameWhat goes hereThe customer whose sale you effected. For a barter exchange, the member or client who provided the property or services in the exchange.Watch forCorporations, IRAs, charities and other exempt recipients need no form. S corporations get a form for covered securities acquired after 2011, so the usual corporate test is not enough; a Form W-9 showing it is not an S corporation is one accepted proof.Which name goes firstShort-term gain or lossCheck it whenThe gain or loss is short term under section 1222. Take into account transfer statements, Form 8937, and the gift and inherited stock rules.Watch forShort and long term never go on the same form. Covered securities with short-term and long-term results are reported on separate forms, even from one trade.Open this box on the IRIS field mapLong-term gain or lossCheck it whenThe gain or loss is long term under section 1222. For a short sale, base it on the acquisition date of the security delivered to close the sale.Watch forShort and long term never go on the same form. With box 5 checked for a noncovered security, box 2 may be left blank.Open this box on the IRIS field mapCollectiblesCheck it whenThe proceeds in box 1d are from a transaction involving collectibles.Open this box on the IRIS field mapRecipient's street addressWhere the recipient copy is mailed. From the W-9 line 5; the IRS does not match it, but an undeliverable copy is a furnishing failure.Recipient's apartment or suiteSecond address line, optional. Keep it on its own line rather than appended to the street.OrdinaryCheck it whenAll or part of the gain or loss may be ordinary, in addition to the short-term or long-term box. Always check it for sales denominated in a foreign currency and for contingent payment debt under the noncontingent bond method.Watch forIt is not required for a market discount bond or PFIC stock.Open this box on the IRIS field mapQOFCheck it whenYou report any disposition of an interest in a qualified opportunity fund, including by gift or inheritance.Watch forQOF dispositions are reported for every holder, corporations included, each on its own form; the usual exceptions do not apply. A QOF that is not a broker may have to file itself.Open this box on the IRIS field mapBox 4: Federal income tax withheldWhat goes hereBackup withholding, generally 24%, taken because the recipient did not furnish a TIN in the required manner or for another backup withholding reason.ThresholdAny amount. Report the payment and the withholding even when no form would otherwise be needed.Watch forWithholding from a short sale opened in 2026 but still open at year end goes on a 2026 form with only box 1a and box 4. The year's total goes on Form 945.Click to open the row in the box tableBox 5: Noncovered securityCheck it whenYou choose to flag the sale of a noncovered security. Never check it for a covered security.Watch forChecked, boxes 1b, 1e, 1f, 1g and 2 may be blank, and if you fill them in you face no penalty for errors. Unchecked, you are subject to penalties on those boxes even for a noncovered security.Click to open the row in the box tableRecipient's city or townCity of the mailing address, from the W-9 line 6.Box 7: Loss not allowed based on amount in 1dCheck it whenBox 1d reports cash, stock or other property the customer received in an acquisition of control or substantial change in capital structure reportable on Form 8806.Watch forBox 1a shows the corporation's name, shares and class. Leave the other boxes blank unless you combine this with ordinary sale reporting, and then box 1e may not exceed box 1d.Click to open the row in the box tableRecipient's state or provinceTwo-letter state code; it also drives which state copies are needed when there is no withholding.State filing requirementsRecipient's countryBlank or US for a domestic address. A foreign address is a flag to check whether a W-8 and Form 1042-S were the right documents instead.Foreign payeesRecipient's ZIP or postal codeFive or nine digits for a U.S. address, or the foreign postal code.Gross proceedsCheck it whenBox 1d was not reduced by option premiums.Watch forProceeds are always reduced by commissions and transfer taxes. This box only tells whether option premiums were netted.Open this box on the IRIS field mapNet proceedsCheck it whenYou reduced box 1d by option premiums, for securities sold because an option was exercised.Watch forFor options granted or acquired after 2013, follow Treas. Reg. 1.6045-1(m) on premiums.Open this box on the IRIS field mapAccount numberWhat goes hereYour account number for this customer.Required whenYou file more than one Form 1099-B for a recipient with multiple accounts, or you check the FATCA filing requirement box. The IRS encourages one on every form.Box 2nd-tin: D TIN not.Check it whenThe IRS has notified you twice within 3 calendar years that this payee gave an incorrect TIN. The IRS then stops sending notices about this account.Watch forDo not check it if both notices came in the same year, or relate to returns for the same year. Those count as one notice, so no second B Notice is due.Open this box on the IRIS field mapBox 8: Profit or (loss) realized in 2026 on closed contractsWhat goes hereProfit or (loss) realized in 2026 on closed regulated futures, foreign currency or section 1256 option contracts.Watch forBoxes 8 to 11 are for brokers only. When you use them, complete no other numbered box except 1a and, if needed, 4.Click to open the row in the box tableBox 9: Unrealized profit or (loss) on open contracts, December 31, 2025What goes hereUnrealized profit or (loss) on these contracts open at the end of 2025.Watch forLeave out contracts open on December 31, 2025, that were transferred to another broker during 2026.Click to open the row in the box tableFATCA filing requirementCheck it whenYou are a U.S. payer reporting on Form 1099-B to meet your chapter 4 duty for a U.S. account, or an FFI reporting a U.S. account under the election in Treas. Reg. 1.1471-4(d)(5)(i)(A)Treas. Reg. 1.1471-4Treasury regulations, Cornell LII.Watch forChecking it makes the account number required.Box 10: Unrealized profit or (loss) on open contracts, December 31, 2026What goes hereUnrealized profit or (loss) on regulated futures, foreign currency or section 1256 option contracts open at the end of 2026.Click to open the row in the box tableBox 11: Aggregate profit or (loss)What goes hereThe aggregate profit or (loss) for the year on these contracts, figured from boxes 8, 9 and 10.Watch forContracts are reported in aggregate, not per trade. You may use a separate form per contract type, digital asset contracts included.Click to open the row in the box tableBox 14: State nameWhat goes hereThe state's abbreviated name, for up to two states. Keep each state on its own line.Watch forBoxes 14 to 16 are for your convenience; the IRS does not need them.Click to open the row in the box tableBox 15: State identification no.What goes hereYour state identification number, the number that state assigned to you.Click to open the row in the box tableBox 16: State tax withheldWhat goes hereState income tax withheld from this payment, if any.Watch forA state that wants a paper copy gets Copy 1; the recipient gets Copy 2.Click to open the row in the box tableBox 12: Basis reported to IRSCheck it whenYou are not checking box 5, or you check box 5 but report basis to the IRS in box 1e anyway.Watch forWith box 5 checked and no basis reported, leave box 12 unchecked.Click to open the row in the box tableBox 13: BarteringWhat goes hereGross amounts a barter exchange member or client received: cash, and the fair market value of property, services, and trade credits or scrip credited to the account.ThresholdNo form for an exchange with fewer than 100 transactions in the year, or for exchanges worth less than $1.Watch forLeave out amounts received in a later exchange of credits or scrip. No negative amounts. Noncorporate members are reported per transaction.Click to open the row in the box tableHover over a box for what goes in it; click to open its row in the table below. On a touch screen, tap the box to jump to the row.
Who must file Form 1099-B
A broker, meaning anyone who in the ordinary course of business stands ready to effect sales to be made by others, files Form 1099-B for each customer for whom it sold stocks, bonds, commodities, regulated futures contracts, foreign currency contracts, forward contracts, debt instruments, options or securities futures contracts for cash, and for certain corporate actions. A barter exchange files for each member who exchanged property or services through the exchange. Sales of digital assets by a broker are reported on Form 1099-DA from 2025.
Corporations are exempt recipients here too, with two carve-outs: a broker must report the sale of a covered security acquired after 2011 by an S corporation, and dispositions of interests in a qualified opportunity fund are reported whoever the holder is. Barter exchanges report corporate members as well, on an aggregate basis if they choose. Sales of digital assets that are also securities ("dual classification assets", including tokenized securities) go on Form 1099-DA rather than 1099-B, with narrow exceptions for section 1256 contracts and money market fund shares.
Threshold: All amounts, every sale or barter exchange, no minimum; brokers may aggregate sales of the same security on a single statement.
What is reported, box by box
| Box | What it reports | Notes |
|---|---|---|
| 1a | Description of property | The issuer's name and number of shares or units, with a class code for stock (C, P or O). Options: the underlier and shares covered. Futures: "RFC"; section 1256 options: "Section 1256 option." Barter: the property or service provided. |
| 1b | Date acquired | RequiredFor covered securities. The acquisition date. Blank if bought on various dates, or if box 5 is checked and you choose not to report it. For a short sale, the date the delivered security was acquired. |
| 1c | Date sold or disposed | The trade date for a broker sale; for barter, the date cash, property, credit or scrip was received. A short sale is reported for the year it is closed by delivery. |
| 1d | Proceeds | Each sale on its own form; fractional shares under $20 are exempt. Gross proceeds less commissions and transfer taxes, losses in parentheses. Accrued bond interest goes on 1099-INT, and contract results go in boxes 8 to 11. |
| 1e | Cost or other basis | RequiredFor covered securities (generally stock bought after 2010, certain debt and options after 2013 or 2015). Adjusted basis, using transfer statements and Form 8937. Enter -0- only for a true zero basis; blank for a noncovered security with box 5 checked. |
| 1f | Accrued market discount | RequiredFor covered securities. Accrued market discount on the debt instrument sold. May be blank when box 5 is checked. |
| 1g | Wash sale loss disallowed | RequiredWhen the sale and repurchase are covered securities with the same CUSIP in the same account; other wash sale losses are optional. Add the disallowed loss to the replacement shares' basis. |
| 2 | Short-term / long-term / ordinary | CheckboxShort term or long term, never both on one form, plus Ordinary when any part may be ordinary (always for foreign currency sales). Covered short-term and long-term lots from one trade need separate forms. |
| 3 | Collectibles or QOF | CheckboxCollectibles when box 1d is from collectibles. QOF for any disposition of a qualified opportunity fund interest, including gifts, for every holder (corporations too), one form per disposition. |
| 4 | Federal income tax withheld | Any amountBackup withholding, generally 24%, when the recipient did not give a TIN as required. Report it even when no form would otherwise be due. The year's total goes on Form 945. |
| 5 | Noncovered security | CheckboxFor noncovered securities only. Checked, boxes 1b, 1e, 1f, 1g and 2 may be blank and any you fill in carry no penalty for errors. Unchecked, those boxes are subject to penalties even for a noncovered security. |
| 6 | Reported to IRS: gross or net proceeds | CheckboxNet proceeds when box 1d was reduced by option premiums; gross proceeds otherwise. Commissions and transfer taxes are always subtracted. |
| 7 | Loss not allowed based on amount in 1d | CheckboxProceeds in box 1d from an acquisition of control or substantial change in capital structure reportable on Form 8806. Box 1a names the corporation, shares and class; other boxes stay blank unless you combine this with sale reporting. |
| 8to11 | Regulated futures and section 1256 contracts | Brokers only, reported in aggregate. Realized profit or loss on closed regulated futures, foreign currency and section 1256 option contracts, unrealized at the end of 2025 and 2026, and the aggregate. Complete no other numbered box except 1a and 4. |
| 12 | Basis reported to IRS | CheckboxCheck it whenever box 5 is not checked, or when box 5 is checked but you report basis in box 1e anyway. |
| 13 | Bartering | Barter exchanges with 100 or more transactions in the year. Cash plus the fair market value of property, services, credits or scrip received. Not later exchanges of credits or scrip, and no negative amounts. |
| 14to16 | State information | OptionalThe IRS does not need them. The state, your state ID number and state tax withheld, for up to two states. A state that wants a paper copy gets Copy 1; the recipient gets Copy 2. |
Codes for the applicable checkbox on Form 8949 (5 codes)
Enter one letter that tells the recipient where to report the transaction on Form 8949 or Schedule D. Leave it blank when boxes 8 to 11 (section 1256 contracts) are completed.
| Code | Meaning | When to use it |
|---|---|---|
| A | Short term, basis reported to the IRS | Recipient reports on Schedule D line 1a or Form 8949 with box A checked. |
| B | Short term, basis not reported to the IRS | Recipient reports on Form 8949 with box B checked. |
| D | Long term, basis reported to the IRS | Recipient reports on Schedule D line 8a or Form 8949 with box D checked. |
| E | Long term, basis not reported to the IRS | Recipient reports on Form 8949 with box E checked. |
| X | Holding period unknown | You cannot tell whether the recipient should check box B or box E on Form 8949. |
Source: Instructions for Form 1099-B (2026), Applicable Checkbox on Form 8949
Box titles follow the current revision of the form. The IRS reads the payer and recipient name, TIN, address, account number and the money boxes; the state boxes are for the state copy only.
Payments that are not reported on Form 1099-B
- Sales for exempt recipients: charities, IRAs, Archer MSAs and HSAs, the United States and the states, and corporations (other than a covered security sold by an S corporation that acquired it after 2011). For covered securities you may not treat a customer as a corporation from its name alone; you need an insurance-company name, a per se corporation, a W-9 exemption certificate showing it is not an S corporation, or a W-8 certifying a foreign corporation.
- Sales initiated by dealers in securities and financial institutions; sales by custodians and trustees reported on a properly filed Form 1041; shares in a money market fund; fractional shares with gross proceeds under $20.
- Obligor payments on nontransferable obligations such as savings bonds and CDs; retirements of registered obligations issued before 2014; sales of short-term obligations issued after 2013 (interest goes on 1099-INT); sales of foreign currency outside a forward or futures contract; Commodity Credit Corporation certificates; spot or forward sales of agricultural commodities; some precious-metal sales below the CFTC contract quantity; grants and purchases of options.
- Sales for exempt foreign persons documented on a Form W-8; sales of digital assets (Form 1099-DA); real estate (Form 1099-S).
- For barter exchanges: an exchange with fewer than 100 transactions in the year, exempt foreign persons, and exchanges of property or services worth less than $1.
Due dates and extensions
| Copy | Due | For 2026 returns |
|---|---|---|
| To the IRS, paper | February 28 | Monday, March 1, 2027 (February 28 is a Sunday) |
| To the IRS, electronic | March 31 | Wednesday, March 31, 2027 |
| To the recipient | February 15 | Tuesday, February 16, 2027 (February 15 is Presidents' Day) |
An automatic 30-day extension is available on Form 8809, filed by the due date on paper or through IRIS; a second 30 days requires a hardship showing. Recipient statements can be extended 30 days on Form 15397, online or by fax only. 10 or more information returns of any type in aggregate must be e-filed (T.D. 9972); IRIS is the only IRS intake system from filing season 2027, FIRE having been retired. A payer who e-files the originals must e-file the corrections.
For 2026 forms filed in 2027: January 31 falls on a Sunday, so that deadline moves to Monday, February 1, 2027; February 28 also falls on a Sunday, so the paper deadline moves to Monday, March 1, 2027. March 31 (electronic) and March 15 are weekdays. February 28 does not become February 29 in a leap year. The compliance calendar has every date with the weekend shifts applied.
Backup withholding and TIN matching
Gross proceeds under section 6045 are backup-withholdable, and broker accounts opened after 1983 require a certified TIN, so an account with an uncertified number is treated as one with no TIN. The amount subject to withholding on a margin-account sale is limited to the cash available for withdrawal after settlement. The 60-day awaiting-TIN exemption applies to readily tradable instruments. Withholding is reported in box 4 and on Form 945.
Brokers may use the IRS TIN Matching program.
Name and TIN errors on this form
Every information return is matched by the IRS on the first four characters of the payee's name (the name control) against the TIN. A mismatch produces a CP2100 line the following autumn and, unless the solicitation record is in order, a 972CG penalty the year after: $340 per return for 2026 forms filed in 2027 that are late or wrong, $690 for intentional disregard, with annual maximums of $4,191,500 ($1,397,000 for small filers) under Rev. Proc. 2025-32. The errors that recur on Form 1099-B:
- Account titling. Joint tenants, tenants in common, custodial, trust and IRA accounts each dictate whose name and TIN go on line 1; the first-named owner's TIN is the one the IRS matches.
- Transferred accounts. When an account moves between brokers, the receiving broker relies on the transferor's basis statement but must obtain its own W-9; a name/TIN inherited from the old firm may already be on a CP2100.
- Entity accounts with an individual's SSN. An LLC's brokerage account opened under the member's SSN reports under the member's name, not the LLC's.
- Corporate status you cannot see. "Inc." in the name is not enough to skip a covered-security sale; an S corporation is reportable. The W-9 exemption code, or a name that is an insurance company or per se corporation, is what lets you treat the customer as exempt. A broker may require an exempt recipient to furnish a W-9 and treat one that refuses as non-exempt.
- Second TIN notice box. Check it after two IRS notices within three calendar years for the same payee; two notices in one year, or for the same tax year, count as one and do not require a second B-Notice.
The name control calculator shows what the IRS will derive from a name line, and the CP2100 guide covers what to do when the notice arrives.
Recipient statements and substitutes
The recipient statement for Form 1099-B need not be a copy of the official form: a substitute may be combined with other account statements or reports, provided every required item is numbered and titled as on the official form, the tax year, form number and form name appear together, the recipient instructions are included, and, for the forms Pub 1099 lists, a telephone number with direct access to someone who can answer questions is shown. Publication 1179 (Rev. Proc. 2026-18) has the specifications; logos, slogans and advertising are not permitted on the statement itself. Statements may be furnished electronically only to a recipient who has affirmatively consented in a way that shows they can access the format, after the disclosures in Pub 1099 part M, and must stay posted through October 15. Copy B may show a truncated TIN (xxx-xx-1234); the IRS copy never may. The consent rules for furnishing statements electronically are under review: Notice 2026-4 asked for comments (due May 23, 2026) on whether the broker rules, and then the rules for every other payee statement, should change.
Corrections and state copies
A wrong amount, code or checkbox is a Type 1 correction: one corrected return with the CORRECTED box checked. The wrong form type is a Type 2 correction: a zeroed-out copy of the original plus a new original, in that order. A wrong or missing payee TIN or name is also Type 2 on paper, but IRIS corrects it in one step on the original record (Publication 5717). Publication 1099 also says you are not required to file a correction for a missing or incorrect TIN if you meet the reasonable-cause standard, only to use the right TIN on the next return, although the IRS encourages the correction. Details and the paper error charts are on the 1099 corrections page.
Form 1099-B is a Combined Federal/State Filing program form: e-file it with the CF/SF election and the IRS forwards it to participating states. Whether that satisfies a given state, or the state wants a direct filing with its own transmittal, is on each state pages.
Questions people ask about Form 1099-B
Why is the recipient date February 15 rather than January 31?
Section 6045 statements (1099-B, 1099-DA, 1099-S, and 1099-MISC boxes 8 and 10) have a February 15 statement date to give brokers time for reclassification. The IRS filing dates are unchanged.
Do we report a sale with $0 proceeds?
Yes, there is no minimum; every sale is a transaction.
Our client is an S corporation.
Report the sale if it is a covered security the S corporation acquired after 2011; other sales by an S corporation fall under the corporate exemption. QOF dispositions are reported for every holder, corporate or not.
Does a barter club with 60 trades a year file?
No. A barter exchange with fewer than 100 transactions in the year is not required to file, and neither are exchanges worth less than $1. Members who trade services directly, outside an exchange, do not file 1099-B at all (a 1099-MISC or NEC may apply).
Where does crypto go?
Form 1099-DA for sales effected by a broker on or after January 1, 2025. See the 1099-DA page.
Other federal forms
1042-S · 1097-BTC · 1098 · 1098-C · 1098-E · 1098-F · 1098-Q · 1098-T · 1098-VLI · 1099-A · 1099-C · 1099-CAP · 1099-DIV · 1099-G · 1099-INT · 1099-K · 1099-LPS · 1099-LS · 1099-LTC · 1099-MISC · 1099-NEC · 1099-OID · 1099-PATR · 1099-Q · 1099-QA · 1099-R · 1099-S · 1099-SA · 1099-SB · 3921 · 3922 · 5498 · 5498-ESA · 5498-QA · 5498-SA · 5498-TA · W-2G · 1099-DA · Comparison table
Sources: IRS Publication 1099 (2026), General Instructions for Certain Information Returns, which replaced the separate General Instructions starting with tax year 2026; Instructions for Form 1099-B (2026); Pub 1099 (2026), Guide to Information Returns and parts J, N and P; IRC 6045IRC 6045Internal Revenue Code, Cornell LII, 3406; Regulations 1.6045-1. Threshold amounts are indexed for inflation from calendar year 2027; check IRS.gov/InflationAdjustment for the current year.