AI agents for business finance: what they can and can't do
What AI agents can do in bookkeeping, close, collections and compliance today, where a person must stay in charge, and how to judge a product.
The short answer
Form 1042-S applies when a US withholding agent pays US-source income, such as pay for work physically done in the US or royalties for US use, to a foreign person. With no US income tax treaty with Nigeria, the general 30% rate is not reduced by treaty. Forms 1042-S for 2026 are due to the IRS and the recipient by 15 March 2027.
What Form 1042-S is for
Form 1042-S reports income paid to foreign persons that is subject to chapter 3 withholding. The IRS instructions for Form 1042-S (2026) say every withholding agent must file it, and the definition of withholding agent is broad: if your US company controls the payment, you are likely it. Publication 515 says most types of US-source income received by a foreign person are subject to US tax of 30%, unless a treaty reduces it.
For Nigerian payees there is no treaty reduction to claim. The IRS list of US income tax treaties (reviewed 3 Jan 2026) includes Egypt, Morocco, South Africa and Tunisia in Africa, and not Nigeria. A W-8BEN from a Nigerian payee documents foreign status; it cannot claim a treaty rate that does not exist.
When it applies to a Nigerian contractor
For most remote work it does not. Pay for services is generally sourced where the work is physically done, so a contractor working only from Lagos is usually paid foreign-source income outside the regime; see whether you need a 1099. These are the cases that bring a Nigerian payee into it:
| Situation | Likely US-source? | What to do |
|---|---|---|
| Contractor flies to Houston for a two-week on-site project | Yes, for the US days | Apportion the fee; withhold and report the US part |
| You license a Nigerian musician's track for a US advert | Royalties for US use usually are | Withhold at 30% and file 1042-S |
| Nigerian speaker paid for a talk delivered in New York | Yes | Withhold and report |
| Developer in Lagos builds your app remotely | Usually no | Keep W-8BEN and records; no 1042-S |
| Nigerian company provides customer support from Abuja | Usually no | Keep W-8BEN-E and records |
The 1042-S instructions include a category described as "compensation for independent personal services performed in the United States", which is the line an on-site visit falls under.
Worked example
Example only. A Georgia company pays a Lagos engineer $20,000 for a project: 18 working days in Lagos and 2 working days on site in Atlanta, 20 days in total. On a time basis, the US-source part is 2/20 x $20,000 = $2,000. Withholding at 30% is $600, so the engineer receives $19,400 and the company deposits $600 with the IRS and reports $2,000 of gross income and $600 withheld on Form 1042-S. Time apportionment is one common approach; how your contract describes the work matters, so agree the method with your adviser before paying.
Deadlines and copies
- Forms 1042-S for 2026 are due by 15 March 2027 (Publication 515 and the 1042-S instructions); if 15 March falls on a weekend or holiday, the next business day.
- Copy A goes to the IRS with Form 1042-T if filed on paper; Copies B, C and D go to the recipient.
- E-filing is required if you must file 10 or more information returns in the year.
- You also file the annual Form 1042 return summarising the tax withheld; check its current due date in the Form 1042 instructions.
Documenting the US days
Because the answer turns on where work is done, the evidence you keep is the defence. Before a Nigerian contractor travels for your project, agree in writing which tasks will be done in the US and for how many days, and whether the fee is split or the US part is priced separately. Keep the travel dates, the agenda or site log for the US days, and the invoice showing how the fee was divided. If you reimburse flights and hotels, ask your adviser whether those reimbursements count as part of the US-source payment, because how they are paid and documented can change the answer. A clean file also helps the contractor if the Nigerian tax authority later asks why part of their fee was taxed in the US.
Mistakes to avoid
- Withholding 30% on all payments to Nigeria "to be safe". Over-withholding on foreign-source pay costs the contractor money they then have to reclaim.
- Paying a US visit fee with no withholding because the contractor "lives in Nigeria". Residence does not decide source; where the work is done does.
- Accepting a W-8BEN claiming a treaty rate for Nigeria. There is no US-Nigeria income tax treaty.
- Forgetting the contractor may also owe Nigerian tax. A Nigerian resident is taxed on worldwide income, and US tax withheld may or may not be creditable in Nigeria; that is their adviser's question, but say so in your onboarding note.
Where Pryme fits
Pryme does not file IRS forms. A Pryme Business Account lets you pay the net amount in naira or dollars and keep a clear record, and the Finance agent can prepare the payment split for a person to approve. See also records to keep.
Questions people ask
Do I file a 1042-S for a contractor in Nigeria?
Only if you paid US-source income, for example for work physically done in the US or royalties for US use. Remote work done entirely in Nigeria is generally foreign-source and outside 1042-S.
Is there a US tax treaty with Nigeria?
No. The IRS treaty list (reviewed January 2026) does not include Nigeria, so the general 30% rate applies to US-source income without treaty reduction.
When is Form 1042-S due?
By 15 March of the following year to the IRS and the recipient; 2026 forms are due 15 March 2027.
What is the withholding rate for a Nigerian payee?
30% on most US-source income paid to a foreign person, with no treaty rate available for Nigeria.
Sources
- IRS: Instructions for Form 1042-S (2026) · accessed Oct 2026
- IRS: Publication 515, Withholding of tax on nonresident aliens and foreign entities (2026) · accessed Oct 2026
- IRS: United States income tax treaties, A to Z (reviewed 3 Jan 2026) · accessed Oct 2026
- IRS: About Form W-8BEN (reviewed 2 Oct 2026) · accessed Oct 2026
This article is general information, not financial, legal or tax advice. Products described are provided under the terms on this site and are subject to regulation and eligibility.