What is Form 1042-S?

How it works

When a US payer (a "withholding agent") sends US-source income to a non-resident — dividends, interest, royalties, services performed in the US, partnership distributions, scholarship grants — they must report it on Form 1042-S. One form per recipient, per income type, per withholding rate.

The default rate is 30% of gross on FDAP (fixed, determinable, annual or periodical) income. A treaty can reduce that rate (typically to 0–15%), but only if the recipient certifies eligibility on Form W-8BEN for individuals or Form W-8BEN-E for entities. If no W-8 is on file, the agent must withhold the full 30%, and information reporting on 1042-S is still required even if no tax was withheld.

The form goes to the recipient by March 15 of the year following the payment year, and to the IRS by the same deadline (electronically) or earlier on paper. The agent's own annual return — total amounts paid and tax withheld — is Form 1042 (without the -S), filed by 15 March.

What the boxes tell you

A 1042-S has three numbers that matter: gross income paid (box 2), tax rate applied (box 3b), and tax withheld (box 7a). The income code in box 1 tells you the IRS classification — code 06 for dividends, 01 for interest, 12 for royalties, 16 for scholarship, 17 for independent personal services, 50 for "other". Treaty country and treaty article appear in boxes 16a and 16b; if those are blank but a reduced rate was applied, the form is defective and may be rejected by the IRS or by the recipient's home tax authority claiming foreign tax credit.

Examples

• Indian developer paid by a US client. Receives $80,000 for services performed entirely from Bangalore. Services performed outside the US are not US-source FDAP — box 7a should show $0 withheld and box 1 should reflect proper foreign-source treatment. If the payer mistakenly withholds 30%, the developer files Form 1040-NR to claim a refund using the 1042-S as proof.
• French author receiving US royalties. Earns $25,000 of royalties from a US publisher. France-US treaty rate on royalties: 0%. With a valid Form W-8BEN claiming treaty benefits, the publisher withholds nothing and issues a 1042-S with box 7a = $0 and treaty article 12 cited in box 16b.

Common mistakes

• Confusing 1042-S with 1099. A non-US person never gets a 1099 — they get a 1042-S. If you're a non-resident and a 1099 lands in your inbox, the payer thinks you're a US person, and CRS / FATCA reporting will follow under that classification.
• Skipping the W-8BEN. No W-8BEN on file means full 30% withholding regardless of treaty rights. The refund route via Form 1040-NR works but takes 6 to 18 months.
• Filing 1042-S when the payment is actually ECI. Effectively connected income (services in the US, US trade or business) is reported on 1099 / W-2 mechanics for residents, or 1040-NR with attached statements for non-residents — not 1042-S. Using the wrong form leaves both halves wrong.
• Missing the 15 March deadline as the agent. Per-form penalties scale with how late the form is filed, capped per calendar year. Intentional disregard is uncapped per form.