How to pay contractors in Mexico from a US company (2026)

Updated October 2026

The short answer: a US company can pay a contractor in Mexico directly in US dollars. Collect a Form W-8BEN, skip the 1099, sign a services agreement, and have the contractor issue you a CFDI (Mexico's electronic invoice) under their RFC with the SAT. Many exported services qualify for a 0% VAT rate.

Mexico is the closest talent market a US company has: same time zones, deep engineering and operations talent, and a border most teams already do business across. It also has one of the most structured e-invoicing systems in the world, which means the contractor's side of the paperwork is well defined. You just need to know what to ask for. If you are still deciding between contractors and employees, start with our Mexico hiring and payroll guide.

Ontop is the Global Workforce Engine, the way companies hire and pay anywhere and the financial home for global workers. Ontop pays more than 950 active contractors in Mexico (Ontop platform data, October 2026) on behalf of companies that hire across LATAM.

Key takeaways

• Work performed in Mexico is foreign-source income for US tax purposes, so a US company generally does not withhold US tax or issue a Form 1099 to a Mexican contractor.
• Keep a signed Form W-8BEN (or W-8BEN-E for a company) on file. It is not sent to the IRS.
• Mexico has an income tax treaty with the United States, but for work done in Mexico the treaty rarely changes the outcome: the income is not US-source to begin with.
• The contractor needs an RFC with the SAT and must issue you a CFDI for every payment.
• Article 29 of Mexico's VAT law applies a 0% rate to a defined list of services used abroad, including information technology services.
• Many independent professionals pay income tax under RESICO, the simplified regime for individuals with income up to MXN 3.5 million a year.
• A contractor of record such as Ontop handles contracts, compliance and USD payouts from $49 per contractor per month.

What does a US company need to do to pay a contractor in Mexico?

Your side is light. Confirm the contractor works from Mexico, collect a Form W-8BEN, sign a services agreement and pay against a CFDI. The work happens outside the United States, so the payment is foreign-source income: in most cases there is no US withholding, no Form 1099 and no Form 1042-S.

The rule that does the heavy lifting

IRS Publication 515 (2026) says "the place where the services are performed determines the source of the income, regardless of where the contract was made, the place of payment, or the residence of the payer." A developer in Guadalajara working for your Austin company earns foreign-source income, even if you pay from a US account.

The IRS instructions for Forms 1099-MISC and 1099-NEC direct payments to nonresident aliens to Form 1042-S, and Form 1042-S reports US-source income. Work done entirely in Mexico is not, so neither form is needed.

The W-8BEN and the US-Mexico treaty

Before the first payment, ask for a signed W-8BEN. Per the IRS instructions, the contractor gives it to you, not to the IRS, and it generally stays valid until the last day of the third calendar year after signing. A Mexican company (an S.A. de C.V., for example) signs a W-8BEN-E instead.

Unlike Colombia or Argentina, Mexico does appear on the IRS list of US income tax treaties. The treaty matters mostly when a contractor spends time working inside the United States. For someone working from Mexico, the income is foreign-source either way. If a contractor travels to the US to work for you, ask a tax advisor about that portion.

What does the contractor need to have in place in Mexico?

Your contractor needs an RFC (taxpayer ID) with the SAT, a tax regime that fits their activity, and the ability to issue CFDI electronic invoices. If the service is on the list in article 29 of the VAT law and used abroad, it can be invoiced at 0% VAT. Income tax is the contractor's responsibility in Mexico.

RFC and tax regime

The SAT (Servicio de Administración Tributaria) is Mexico's tax authority, and the RFC (Registro Federal de Contribuyentes) is the tax ID every contractor needs to invoice. Ask for their Constancia de Situación Fiscal during onboarding: it shows their name, RFC and regime.

Many independent professionals use RESICO (Régimen Simplificado de Confianza), a simplified regime for individuals with income up to MXN 3.5 million a year and income tax rates from 1% to 2.5%, according to the SAT's own announcement as reported by the Instituto Mexicano de Contadores Públicos. Others stay in the regime for business and professional activities. Either way, the contractor files and pays their own income tax (ISR) with the SAT.

The CFDI

Every payment needs a CFDI, the electronic invoice the SAT validates in real time. When the client is a foreign company without a Mexican RFC, the contractor issues it using the generic RFC for foreign residents, XEXX010101000, and the CFDI 4.0 also records your country of tax residence and your foreign tax ID. Ask for the XML and PDF of each CFDI and keep them with your payment records.

IVA at 0% on exported services

Mexico's standard VAT (IVA) rate is 16%, but article 29, fraction IV of the Ley del Impuesto al Valor Agregado applies a 0% rate to services provided by Mexican residents and used abroad, for a specific list: technical assistance, advertising, commissions and mediation, insurance, financing, filming, call centers for calls originating abroad and information technology services, among others. The list is closed. If the service is not on it, 0% does not apply automatically, even when the client pays from abroad. That analysis belongs to your contractor and their accountant.

How can you pay a contractor in Mexico, and how do the options compare?

Your options are an international bank wire, an online money-transfer service, a freelancer payout platform, stablecoins sent directly, or a contractor of record. Mexico's banking system makes peso payouts easy, so the real comparison is the FX spread, who absorbs fees, and how much compliance work stays with you.

Speeds and fees vary by provider, amount and bank. Check current terms before you send. Ontop pricing from getontop.com/pricing, October 2026.

Where the money leaks

The cost of paying someone in Mexico rarely shows up as a single fee. It hides in the conversion: a bank rate a few points off the market, applied every month. Ask any provider for the rate and the fee before you send, and compare what the contractor actually receives.

Pesos or dollars?

Both work. Some Mexican contractors want pesos in their local bank account because their costs are in pesos. Others prefer to hold dollars and convert when the rate suits them. Write the currency into the agreement, decide who absorbs transfer fees, and keep the invoice in the same currency as the payment so reconciliation stays simple on both sides of the border.

How do you avoid misclassifying a contractor in Mexico?

Focus on subordination. Mexican labor law defines an employment relationship as personal work, subordinated to someone, in exchange for a salary, whatever the contract is called, and it presumes that relationship exists between whoever provides personal work and whoever receives it. If you direct the work like a manager, the paperwork will not save you.

What the Ley Federal del Trabajo says

Article 20 of the Ley Federal del Trabajo defines the relationship as "la prestación de un trabajo personal subordinado a una persona, mediante el pago de un salario," and says a contract and the actual provision of work "producen los mismos efectos." Article 21 presumes the existence of an employment contract and relationship between the person who provides personal work and the person who receives it. The company carries the burden of showing independence.

Signals of real independence

• The contractor sets their own schedule and methods, and you pay for deliverables or a defined scope.
• They can work for other clients and use their own equipment.
• They invoice with a CFDI under their own RFC, instead of receiving a payroll receipt.
• They do not receive employee perks, mandatory hours or performance reviews like your staff.

When you need an employee

If the role calls for exclusivity, fixed hours and daily direction, you need a Mexican entity or an employer of record to hire properly. Ontop does not employ people on your behalf. It is built for contractor teams. Our page on the EOR alternative for contractor teams explains when contractors are the right model.

What is the step-by-step process to pay your first contractor in Mexico?

Five steps: scope the engagement as a service, collect the W-8BEN and the contractor's Constancia de Situación Fiscal, sign a services agreement, agree on CFDI invoicing, and set up the payout. Once the first cycle runs, every month after that is an approval and a receipt.

1. Scope it as a service. Deliverables, rate and currency, with no fixed hours or exclusivity.
2. Collect documents. A signed W-8BEN (or W-8BEN-E) and the contractor's Constancia de Situación Fiscal showing their RFC and regime.
3. Sign a services agreement. Scope, IP assignment, confidentiality, termination and payment terms. It also documents that the service is used abroad.
4. Agree on CFDI invoicing. One CFDI per payment, XML and PDF, with a clear due date.
5. Set up the payout. Decide USD or pesos, and know the all-in cost per payment before the first one goes out.

Mistakes that cost US companies the most in Mexico

• Paying without a CFDI. In Mexico, an invoice that the SAT has not validated is not an invoice. Ask for the XML every time, not just a PDF.
• Assuming 0% VAT applies to every service. The article 29 list is closed. If your contractor charges IVA, it may be correct, so ask them to explain the treatment instead of refusing to pay it.
• Treating the contractor like staff. A fixed schedule, a manager directing daily work and exclusivity are the signals of subordination that Mexican labor authorities look for.
• Ignoring the FX spread. Two providers with the same fee can deliver very different amounts in pesos. Compare what the contractor receives, not what you send.
• Forgetting the W-8BEN renewal. The form generally expires at the end of the third calendar year after signing. Track it.

How does a contractor of record make paying in Mexico simpler?

A contractor of record manages the agreement, onboarding, compliance and payouts, so your team approves payments instead of chasing documents. With Ontop it starts at $49 per contractor per month, and your Mexican contractors receive USD in an Ontop Global Account, ready to hold, spend or convert.

When you pay international contractors through Ontop:

• Use your own contracts or ours. Your agreements or Ontop templates.
• Compliance is handled. Ontop acts as the intermediary, and contracts, tax documents and local regulations are managed for you.
• Every payout in one place. Approve, schedule and track payments in real time, with contracts and reports together.
• A financial home for your team. Contractors get USD in their Ontop Global Account, plus a card to spend globally.

See the full plan on the Ontop pricing page: from $49 per contractor per month, no setup fees. Hiring in more than one country? The same playbook works for contractors in Colombia and contractors in Argentina.

Frequently asked questions

Do I need to send a 1099 to a contractor in Mexico?

No, if the contractor is not a US person and does the work from outside the United States. That income is foreign-source, so Form 1099-NEC does not apply. Keep a signed Form W-8BEN on file.

Does the US-Mexico tax treaty change anything for my contractor?

Usually not for work done in Mexico, because that income is not US-source in the first place. The treaty becomes relevant if the contractor performs work while physically in the United States.

What invoice should a Mexican contractor send me?

A CFDI, the SAT-validated electronic invoice, issued under the contractor's RFC. Ask for both the XML and PDF and keep them with your payment records.

Does my Mexican contractor charge me 16% IVA?

Not if the service is on the list in article 29, fraction IV of the VAT law (information technology services, technical assistance and advertising among them) and is used abroad. Those are taxed at 0%. Services outside the list can carry IVA, so your contractor's accountant should confirm.

Can I pay a contractor in Mexico in US dollars?

Yes. Agree on the currency in the contract. With Ontop, payouts land in USD in the contractor's Global Account, and they choose when to convert to pesos.

How much does it cost to pay a contractor in Mexico with Ontop?

From $49 per contractor per month, with no setup fees. The final price depends on how many contractors you pay. See getontop.com/pricing.

Pay your team in Mexico like they sit down the hall

Mexico puts senior talent in your time zone, with a tax system that tells everyone exactly what to file. Collect the W-8BEN, ask for a CFDI, keep the relationship genuinely independent and choose a rail that shows the full cost. Or let a contractor of record run it end to end.

Book a demo to see how Ontop pays contractors in Mexico from $49 per contractor per month.

Sources

• IRS Publication 515 (2026), Withholding of Tax on Nonresident Aliens and Foreign Entities
• IRS, Instructions for Form W-8BEN
• IRS, Instructions for Forms 1099-MISC and 1099-NEC
• IRS, United States income tax treaties A to Z
• Ley del Impuesto al Valor Agregado, article 29
• Ley Federal del Trabajo, articles 20 and 21
• IMCP, Noticias Fiscales on RESICO (citing the SAT)
• Ontop platform data, active contractors by country, October 2026

This guide is general information, not tax or legal advice. Confirm your situation with qualified advisors in the United States and in Mexico.