U.S. · Tax forms
1099-OID box 8, Treasury OID.
OID on Treasury obligations, negative amounts, and the payer name rule.
Box 8 of Form 1099-OID is original issue discount on a U.S. Treasury obligation for the part of the year the record holder owned it. The instructions say not to include it in box 1, and that the amount may be negative, for example when a Treasury Inflation Protected Security has a deflation adjustment.
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What the instruction says
Enter the amount of OID on a U.S. Treasury obligation for the part of the year it was owned by the record holder. Do not include this amount in box 1. The payer may enter any qualified stated interest on the Treasury obligation in box 2. The amount in box 8 may be a negative number.
Who files and at what line
Form 1099-OID is filed when the total daily portions of OID for a holder is at least $10 and the filer is an issuer, a financial institution with qualifying deposit arrangements, a broker or middleman holding an OID obligation as nominee, or one of the other filer types the instructions list. A form is also required, whatever the amount, where foreign tax was withheld and paid on the OID or backup withholding was withheld and not refunded.
Backup withholding on OID
The box 4 instruction applies the backup withholding rate to amounts in boxes 1, 2 and 8, but limited to the cash paid on the obligations. Before applying the rate, the payer may reduce the amounts reported in boxes 1 and 2 by the amount reported in box 3. See part N of the General Instructions for the rate.
Payer name on Treasury obligations
If you make payment on a U.S. Treasury obligation on which OID is reportable, the instructions tell you to enter your own name, address and TIN on Forms 1099-OID and 1096, not those of the U.S. Treasury Department or the Bureau of the Fiscal Service.
Worked example (made-up figures)
An investor owns a Treasury obligation through a broker for the whole year. The broker computes $210 of OID for the year and enters $210 in box 8 and nothing in box 1. If the obligation is a Treasury Inflation Protected Security and the year ended with a deflation adjustment, box 8 can show a negative number such as -$30.
Related decoders
More 1099 interest and dividend box pages: 1099-INT box 3, 1099-INT box 11. For the 1099-R box 7 codes see the 1099-R distribution codes lookup.
Sources
- Instructions for Forms 1099-INT and 1099-OID (01/2024): the box-by-box section for this form. Read November 2, 2026. The IRS page was last reviewed April 30, 2026.
Edition read: Instructions for Forms 1099-INT and 1099-OID (01/2024). These instructions are continuous use and are updated as needed, so check the current version before relying on a detail. This page summarizes the instructions and does not replace them; the worked example uses made-up figures.
Frequently asked questions
What is box 8 on Form 1099-OID?
Original issue discount on a U.S. Treasury obligation for the part of the year it was owned by the record holder.
Can box 8 be negative?
Yes. The instructions give a Treasury Inflation Protected Security with a deflation adjustment as an example.
Is Treasury OID included in box 1?
No. The instruction says not to include the box 8 amount in box 1.
Where does Treasury interest paid in cash go?
The instructions say the payer may enter qualified stated interest on the Treasury obligation in box 2 of Form 1099-OID.
What is the dollar line for filing a 1099-OID?
The instructions call for a form when the total daily portions of OID for a holder is at least $10, with a no-minimum rule for foreign tax withheld and paid or backup withholding withheld and not refunded.
Not tax advice
This page summarizes IRS instructions, mostly written for the people who prepare the form, and is not tax, legal or financial advice. The payer, a CPA or an enrolled agent can confirm what a box means for your return. Everything runs in your browser; nothing you enter is sent anywhere.