U.S. · Tax forms
1099-INT box 6, foreign tax paid.
Foreign tax on interest, the box 7 country and the no-minimum rule.
Box 6 of Form 1099-INT is any foreign tax paid on interest, reported in U.S. dollars. Box 7 names the foreign country or U.S. territory for which that tax was paid. A form is required for a person whose foreign tax was withheld and paid, whatever the interest amount.
Find the box
Result
What the instruction says
Box 6: enter any foreign tax paid on interest. Report this amount in U.S. dollars. Box 7: enter the name of the foreign country or U.S. territory for which the foreign tax was paid and reported in box 6.
Who files and at what line
The instructions require a Form 1099-INT for each person to whom you paid amounts reportable in boxes 1, 3 or 8 of at least $10, and also for each person for whom you withheld and paid any foreign tax on interest. For that second group there is no dollar minimum.
Not the same as backup withholding
Backup withholding goes in box 4. State income tax withheld goes in the state information boxes 15 to 17, which are provided for convenience and need not be completed for the IRS.
Form 1099-OID and 1099-DIV have their own
On Form 1099-DIV the equivalents are box 7 (foreign tax paid) and box 8 (foreign country or U.S. possession). Read those separately; the numbers differ from Form 1099-INT.
Worked example (made-up figures)
A bank withheld and paid $12 of foreign tax, converted to U.S. dollars, on $60 of interest from a foreign branch. The Form 1099-INT shows $60 in box 1, $12 in box 6 and the country in box 7. If the interest were $4, the form would still be required because foreign tax was withheld and paid.
Related decoders
More 1099 interest and dividend box pages: 1099-INT box 3, 1099-INT box 11, 1099-INT box 10, 1099-DIV box 2a, 1099-OID box 8. 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 6 on a 1099-INT?
Foreign tax paid on interest, reported in U.S. dollars.
What goes in box 7?
The name of the foreign country or U.S. territory for which the foreign tax in box 6 was paid.
Does a small amount of interest still need a form?
Yes, if foreign tax was withheld and paid on it. The $10 line applies to boxes 1, 3 and 8, and foreign tax is a separate trigger.
Is U.S. backup withholding in box 6?
No. Backup withholding is box 4.
Which currency is box 6 in?
U.S. dollars.
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.