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1099 Forms

How to Fill Out Form 1099-OID: A Payer’s Guide to Original Issue Discount Reporting

Updated: June 10, 2026

When you report original issue discount, small box-level mistakes on Form 1099-OID can lead to corrected forms, payee questions, or IRS mismatch notices. This article explains how to fill out Form 1099-OID correctly, including when the form applies, what each box means, and the filing checks payers should complete before submitting it.

Understanding Form 1099-OID and When It Applies

OID is interest income that generally builds up over time when a debt instrument is issued at a discount and later redeemed for a higher amount. Form 1099-OID is used to report original issue discount that a holder of a debt instrument may need to include in income.

Form 1099-OID is applicable when:

  • The OID includible in the holder’s gross income is $10 or more
  • Backup withholding was taken and not refunded, or foreign tax was withheld and paid on the OID, regardless of the threshold.

Common examples of OID-related debt instruments are:

  • Zero-coupon bonds
  • U.S. Treasury obligations issued with OID
  • Inflation-indexed debt instruments with OID
  • Covered securities with OID, acquisition premium, bond premium, or market discount adjustments
  • Tax-exempt OID on municipal bonds
  • Stripped bonds and coupons

Who Must File Form 1099-OID and When?

Who Must File

Form 1099-OID reports taxable or tax-exempt OID and may also report qualified stated interest on the same obligation. File Form 1099-OID for each holder of record when the total daily portions of OID are at least $10, or when foreign tax was withheld and paid on the OID, or federal income tax was withheld following backup withholding rules and was not returned to the payee.

The broad categories of Form 1099-OID filers include:

  • Banks and financial institutions
  • Brokerage and clearing firms
  • Bond issuers
  • Nominees holding debt instruments on behalf of beneficial owners
  • Paying agents and custodians
  • Trustees or middlemen of WHFITs
  • Certain REMIC, FASIT, and CDO filers

When to File Form 1099-OID

The 1099-OID due date follows the standard IRS filing deadlines.

Requirement Statutory deadline 2027 filing date for 2026 returns
Recipient copy January 31 February 1, 2027
Paper filing with the IRS February 28 March 1, 2027
eFiling with the IRS March 31 March 31, 2027

Notes:

  • For 2026 Form 1099-OID returns filed in 2027, the January 31 and February 28 deadlines fall on a Sunday, so they move to the next business day: February 1, 2027, and March 1, 2027. The eFiling deadline remains March 31, 2027.
  • eFiling is required when filing 10 or more aggregate information returns, unless a waiver applies.

How to Fill Out Form 1099-OID: Box-by-Box Instructions

Here are the Form 1099-OID boxes explained:

Form Field/Box What Goes Here Notes
Payer Information Payer name, address, and TIN Must match filing records and transmitter data
Recipient Information Recipient name, address, and TIN Use Form W-9 or a validated account record
Box 1 – Original Issue Discount Taxable OID for the part of the year the record holder owned the obligation Use for regular taxable OID, not Treasury OID
Box 2 – Other Periodic Interest Qualified stated interest on the same obligation Qualified stated interest for the year on the same obligation, if not reported on Form 1099-INT.
Box 3 – Early Withdrawal Penalty Penalty for early withdrawal from a time deposit, such as principal or interest forfeited Report separately; do not net against Box 1 or Box 2
Box 4 – Federal Income Tax Withheld Backup withholding amount Required when withholding applied
Box 5 – Market Discount Accrued market discount on a covered security acquired with market discount and OID Use when the recipient made the applicable market discount election
Box 6 – Acquisition Premium Acquisition premium amortization Applicable only for covered securities acquired with an acquisition premium
Box 7 – Description CUSIP number or other required identifying description Include enough detail to identify the instrument
Box 8 – OID on U.S. Treasury Obligations OID on U.S. Treasury obligations for the part of the year owned by the record holder Do not report Treasury OID in Box 1
Box 9 – Investment Expenses Single-class REMIC investment expenses Limited-use box; not for general OID reporting
Box 10 – Bond Premium Bond premium amortization allocable to interest on taxable or tax-exempt covered securities Review only when premium reporting applies
Box 11 – Tax-Exempt OID Tax-exempt OID on a covered tax-exempt obligation Separate from taxable OID reporting
Boxes 12–14 – State Information State name, payer state number, and state tax withheld Complete when state reporting is required

Form 1099-OID Pre-Filing Checklist

You can use this checklist before filing Form 1099-OID:

  • Collect the holder’s details, including legal name, TIN, mailing address, and Form W-9 when applicable.
  • Missing or invalid TINs should be reviewed to determine whether backup withholding applies.
  • For each instrument, identify whether it has OID, qualified stated interest, or both.
  • Separately track taxable OID, tax-exempt OID, and OID on U.S. Treasury obligations.
  • Reportable OID should be calculated for the part of the year the holder owned the obligation, including any related adjustments.
  • Before filing, verify federal backup withholding, state tax withheld, and foreign tax withheld and paid.
  • Each amount should be entered in the correct Form 1099-OID box.
  • When required, add account numbers, such as when filing more than one form for the same holder.
  • eFiling requirements should be checked under the 10-or-more aggregate information return rule.
  • Recipient statements must be furnished, and Form 1099-OID must be filed with the IRS by the applicable deadline.

Tax1099 Workflow and How It Helps Payers File Form 1099-OID

Step What the workflow does How it helps payers
Step 1: Import payer and recipient data Payer and recipient details can be uploaded in bulk instead of entered one record at a time. This reduces manual entry and makes high-volume Form 1099-OID filing easier to manage.
Step 2: Organize OID reporting fields Taxable OID, Treasury OID, tax-exempt OID, withholding, and related fields can be reviewed in one workflow. Payers can more easily place the right amounts in the right boxes before filing.
Step 3: Validate the data and run TIN checks Validation checks can help identify missing fields, formatting errors, and duplicate entries before submission. The TIN matching tool detects name and TIN combinations that don’t match IRS records. This helps reduce avoidable rejections, corrections, and payee record issues.
Step 4: Review filing details Federal and state filing information can be checked in one place before submission. This gives payers better visibility and control over the filing data.
Step 5: eFile IRS copies and furnish recipient statements Forms can be submitted, and recipient delivery can be managed through a single platform. Year-end reporting becomes easier to manage without handling each step separately.
Step 6: Track records and filing status Submission status, acknowledgments, and records can be tracked after filing. Payers have clearer records for corrections, follow-up, and audit trails.

Tax1099 helps save time with data import, improve accuracy with validation and TIN matching tools, and manage Form 1099-OID reporting. Teams can also use Tax1099 to eFile Form 1099-OID and many other 1099-series forms, deliver recipient copies, and maintain filing records.

Common Form 1099-OID Filing Mistakes and How to Avoid Them

  • Putting Treasury OID in Box 1: Treasury OID belongs in Box 8, not Box 1.
  • Using the wrong form: OID should be reported on Form 1099-OID when the form is required, not only through Form 1099-INT.
  • Netting the early withdrawal penalty: The early withdrawal penalty goes in Box 3 and should not reduce the amount reported in Box 1 or Box 2.
  • Skipping premium or market discount fields: Boxes 5, 6, and 10 should be reviewed when covered securities involve market discount, acquisition premium, or bond premium.
  • Skipping filing when OID is under $10 despite withholding: Form 1099-OID may still be required when federal income tax was withheld under backup withholding rules and not refunded, even if the OID is less than $10. Foreign tax withheld and paid on the OID can also trigger filing below the $10 threshold.

Real-Life Form 1099-OID Reporting Examples

Scenario Reporting result Correct box
Zero-coupon corporate bond $150 of taxable OID accrued to the holder, so Form 1099-OID is required. Box 1
Treasury obligation with OID Treasury OID is reported separately from regular taxable OID. Box 8
Tax-exempt covered security Reportable tax-exempt OID is shown separately on Form 1099-OID. Box 11
Early withdrawal from a time deposit The forfeited amount is reported apart from interest and OID. Box 3
OID below $10 with backup withholding Form 1099-OID is still required when backup withholding was taken and not refunded. Box 4 and the applicable OID box

FAQs

1. What is Form 1099-OID used for?

Form 1099-OID reports original issue discount, related stated interest, withholding, and certain premium or market discount adjustments where applicable.

2. When is Form 1099-OID required to be filed?

Generally, when reportable OID is $10 or more, foreign tax was withheld and paid on the OID, or backup withholding was taken and not refunded.

3. Where does Treasury OID go?

Treasury OID belongs in Box 8.

4. Where does tax-exempt OID go?

Tax-exempt OID needs to be put in Box 11.

5. What if backup withholding applies?

If backup withholding is applicable, then the filer will need to report the withholding in Box 4 and file the form even if the OID amount is below the normal threshold.

File Form 1099-OID with cleaner records, built-in checks, and recipient delivery in Tax1099.

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