Mexico Income Tax for Non-Residents: Complete 2026 Guide

Mexico taxes non-residents differently from residents. The rules are specific, the rates are fixed, and the withholding obligations fall on whoever is making the payment inside Mexico.

Whether you are a foreign individual earning income from Mexico, a US company paying someone in Mexico, or an employer clarifying your obligations, this guide covers Mexico's non-resident income tax in 2026.

Key takeaways

• Non-residents are taxed only on Mexican-source income, not worldwide income. If income has no Mexican source, Mexico has no claim to tax it.
  
  

• Mexican-source income is determined by where work is physically performed, not where the employer is located or where payment is made.
  
  

• Non-resident salary withholding uses fixed rates, not the progressive ISR brackets that apply to Mexican tax residents: the first MXN 125,900 annually is exempt, income up to MXN 1,000,000 is taxed at 15%, and income above that is taxed at 30%.
  
  

• The payer in Mexico is responsible for withholding, not the non-resident individual. If you pay a non-resident for work performed in Mexico, you must withhold and remit ISR.
  
  

• Residency is determined by your primary home location and, when there is more than one home, by where your center of vital interests is situated.
  
  

• Mexico has tax treaties with over 55 countries that can reduce or eliminate withholding on certain income types for qualifying residents of those countries.
  
  

• Permanent establishment risk is real for foreign companies that pay Mexican-based individuals without a compliant structure. It can create full corporate tax obligations in Mexico.
  
  

• An Employer of Record eliminates withholding exposure for foreign companies by becoming the legal employer and handling all ISR obligations directly.
  
  

Who is a non-resident for Mexican tax purposes?

Mexico determines tax residency under the Ley del Impuesto Sobre la Renta (LISR), the Income Tax Law. The SAT (Servicio de Administración Tributaria) enforces it.

You are a Mexican tax resident if:

• You have established your primary home (casa habitación) in Mexico, OR

• You have a home in Mexico and another abroad, and your center of vital interests is in Mexico

Your center of vital interests is in Mexico when:

• More than 50% of your total annual income is Mexican-source, OR

• Mexico is where your main professional activities are carried out

You are a non-resident if neither of the above conditions applies.

Residency in Mexico is not about how many days you spend there. It is about where your primary home and economic life are centered. A person can spend six months in Mexico and remain a non-resident if their vital interests are elsewhere.

The 183-day rule: what it does and does not mean

Many people assume that spending 183 days in Mexico automatically creates tax residency. This is a common misconception.

The 183-day threshold is relevant in the context of certain tax treaty provisions and permanent establishment assessments. It is not a standalone residency trigger under Mexican domestic law.

For the LISR, what matters is the casa habitación test and the center of vital interests test, not a simple day count.

What is Mexican-source income?

Non-residents are only taxed on income that originates in Mexico. Understanding what qualifies as Mexican-source is the foundation of non-resident tax compliance.

Mexican-source income includes:

• Salary and wages earned in Mexico: Income from subordinate personal services (prestación de servicios personales subordinados) performed inside Mexican territory
  
  

• Professional service fees: Payments for independent professional services performed in Mexico

• Rental income: Rent from real property located in Mexico
  
  

• Interest: Interest paid by Mexican residents or by permanent establishments in Mexico to foreign recipients
  
  

• Dividends: Distributions from Mexican companies
  
  

• Capital gains: Gains from the sale of real property in Mexico, shares in Mexican companies, or shares in foreign companies whose value is primarily derived from Mexican real property
  
  

• Royalties: Payments for use of patents, trademarks, technology, and similar rights when the payer is a Mexican resident or permanent establishment
  
  

The critical rule for remote work

If a person works from Mexico for a foreign employer, that income is Mexican-source income, even if:

• The employer is based in the United States, Canada, or any other country

• Payment is made from a foreign bank account

• The employment contract is governed by foreign law

• The employer has no Mexican legal entity or registration

Remote work from Mexico for a foreign company is taxable in Mexico, and cross-border roles may require payroll withholding for the Mexico-based portion of work.

This is the most frequently misunderstood aspect of Mexico's non-resident tax rules. Location of work, not location of employer, determines the tax jurisdiction.

Non-resident ISR withholding rates by income type

Non-residents do not use the same progressive ISR brackets as Mexican residents. Different income types are subject to different flat withholding rates under the LISR.

Salary and wages (subordinate personal services)

The first MXN 125,900 earned annually is exempt, income up to MXN 1,000,000 is taxed at 15%, and income above that threshold is taxed at 30%.

Note: The MXN 125,900 annual exemption applies to the total annual income from this source, not per payment. Withholding is calculated on the cumulative basis.

These rates are final withholding rates. Non-residents receiving only salary income from Mexico generally do not need to file an annual ISR return. The withholding is the final tax.

Interest income

Non-residents are subject to withholding taxes on Mexican-source interest income at rates varying from 0% to 35%, depending on several factors.

The rate depends on who is paying the interest, the type of financial instrument, and whether a tax treaty applies. The most common rates:

Dividends

In the case of dividends and other corporate distributions from Mexican companies, since 2014, there is a 10% tax withholding on the dividends from corporate profits generated after 2013.

Dividends from corporate profits generated before 2014 follow different rules and may be subject to a gross-up mechanism under the LISR.

Capital gains

Non-residents are subject to Mexican tax on gains from sales of real property in Mexico, or shares of Mexican companies.

When a capital gain is taxable, the non-resident investor can elect to pay either 25% of gross proceeds or 35% of the net gain.

Sales of shares in the Mexican stock exchange are subject to a flat 10% tax withholding on the profit from said transaction.

Rental income

Non-resident landlords with property in Mexico pay 25% ISR on gross rental income.

An alternative election under Article 159 of the LISR allows payment of approximately 35% on net rental income after deductions.

This is typically beneficial when maintenance and management expenses are high relative to gross rent.

Royalties and technical assistance fees

Royalties paid to non-residents for use of intellectual property are generally subject to 25% withholding. Tax treaties often reduce these rates significantly.

Rates for technical assistance and certain technology transfer payments may differ by treaty.

Summary table: 2026 non-resident WHT rates

Who withholds and remits ISR for non-residents?

The withholding obligation falls on the Mexican payer, not the non-resident receiving the income.

Under the LISR, whoever makes the payment to the non-resident is responsible for:

1. Calculating the correct ISR withholding amount

2. Withholding it from the payment before it is made

3. Remitting the withheld amount to SAT by the 17th of the following month

4. Issuing a CFDI (digital tax receipt) documenting the payment and the withholding

If the payer is a foreign company with no Mexican presence, the withholding obligation can still arise.

When a foreign company pays a non-resident individual for work performed in Mexico, SAT can treat the payment as having a Mexican payer for withholding purposes if a permanent establishment exists.

For the full framework of how employee ISR withholding is calculated and remitted in Mexico, the employee tax withholding in Mexico guide covers the complete payroll mechanics.

Mexico's tax treaty network and non-residents

Mexico has comprehensive income tax treaties with over 55 countries. For non-residents who are tax residents of a treaty country, these agreements can:

• Reduce withholding rates on dividends, interest, and royalties below the domestic LISR rates

• Eliminate double taxation on income taxed in both Mexico and the home country

• Establish tie-breaker rules for residency disputes

• Define what constitutes a permanent establishment

• Allocate taxing rights on specific income categories

Countries with active tax treaties with Mexico (selected)

To claim treaty benefits, non-residents must generally:

• Provide the Mexican payer with proof of tax residency in the treaty country (a certificate from the home country's tax authority)

• Establish that the treaty provision applies to the income type in question

• Meet any limitation-on-benefits provisions the treaty may include

Treaty benefits are not automatic. The non-resident must actively claim them. Without the proper documentation provided to the payer, the standard LISR withholding rates apply.

For companies hiring in Mexico from specific countries, the following country-specific guides cover the tax, compliance, and employment considerations:

• Hiring employees in Mexico from the United States

• Hiring employees in Mexico from Canada

• Hiring employees in Mexico from the United Kingdom

• Hiring employees in Mexico from Australia

Resident vs. non-resident tax: key differences

Mexican tax residents use the annual progressive ISR table published by SAT, with 11 brackets from 1.92% to 35% on income above approximately MXN 5.1 million annually.

Thresholds are indexed for inflation under Article 152 of the LISR and updated for 2026.

Non-residents skip those brackets entirely. Their income is taxed at the flat rates described above, without access to the personal deduction regime that reduces taxable income for residents.

For how ISR works for resident employees in Mexican payroll, the what is ISR in Mexico guide covers the resident rate structure and withholding mechanics.

Permanent establishment risk for foreign companies

This is the critical compliance risk most foreign companies do not anticipate.

If a foreign company has a permanent establishment in Mexico, it is subject to Mexican corporate income tax (ISR at 30%) on the income attributable to that establishment.

It is not just a payroll issue. It becomes a full corporate tax exposure.

What creates a permanent establishment in Mexico

Under the LISR and most of Mexico's tax treaties, a permanent establishment can arise when:

• The company has a fixed place of business in Mexico (office, warehouse, branch)

• A dependent agent in Mexico has authority to conclude contracts on behalf of the company

• The company has employees physically performing services in Mexico for an extended period

• A construction site or installation project exceeds six months (the specific threshold varies by treaty)

How paying Mexican-based employees creates risk

When a foreign company pays someone working in Mexico without a compliant structure, SAT may assess that the payments constitute activity of a permanent establishment.

The consequence: the foreign company becomes subject to Mexican corporate ISR on those payments, plus penalties and interest.

The consequence: the foreign company becomes subject to Mexican corporate ISR on those payments, plus penalties and interest for the period the establishment was deemed to exist.

A foreign company that has been paying a Mexico-based person for 18 months as a contractor, with no CFDI, no ISR withholding, and no IMSS registration, has likely created a permanent establishment exposure. The SAT audit does not start with the person. It starts with the company.

How a compliant EOR eliminates this risk

When a foreign company uses an Employer of Record in Mexico with active REPSE registration, the EOR is the legal employer.

The EOR has the Mexican legal entity, the SAT registration, the IMSS enrollment, and the CFDI issuance infrastructure.

The foreign company's payments flow to the EOR as a service fee. The EOR handles all Mexican employment tax obligations.

The foreign company has no direct Mexican payroll exposure, and the permanent establishment risk from unstructured employment is eliminated.

Non-residents working remotely from Mexico

Remote work has made this scenario increasingly common.

A person who is a tax non-resident of Mexico (a foreign national on a temporary visa, or a digital nomad) works from Mexico for a foreign employer.

Several distinct questions arise:

Is the income Mexican-source?

Yes. Work physically performed inside Mexican territory generates Mexican-source income, regardless of the employer's location or the payment currency.

Does the foreign employer have withholding obligations?

If the foreign employer has no Mexican presence, the withholding obligation is technically on the employer but may be practically unenforceable if the employer has no Mexican registration.

The non-resident individual may need to register with SAT and handle their own ISR payments in certain cases, particularly if they are invoicing services as an independent professional.

Does Mexico's temporary visa status affect taxation?

Immigration status (tourist, temporary resident, permanent resident) does not determine tax residency.

A person on a temporary resident visa may or may not be a Mexican tax resident, depending on whether they have established their primary home and center of vital interests in Mexico.

What is the RFC requirement?

Non-residents who earn Mexican-source income and need to file returns or issue invoices must obtain a Mexican tax ID (Registro Federal de Contribuyentes, RFC) from SAT.

For foreign employees hired through a compliant Mexican employer, RFC registration is handled as part of onboarding.

For the process of obtaining an RFC in Mexico, the RFC registration process in Mexico guide explains the steps and documentation required.

Non-residents and IMSS: the social security question

IMSS social security contributions in Mexico are tied to the employment relationship, not to tax residency.

A non-resident foreign national employed in Mexico under a formal employment contract is subject to IMSS registration and contributions in the same way as a Mexican national, when:

• They are performing work in Mexican territory

• The employment relationship meets the conditions of subordination under the LFT

Non-resident status does not exempt an employer from IMSS obligations on employees physically working in Mexico.

For the full employer obligation framework that sits alongside ISR, the mandatory social security in Mexico guide explains IMSS, INFONAVIT, and AFORE contribution requirements.

Annual ISR declaration for non-residents

In most cases, non-residents who earn only Mexican-source salary income through a registered employer are not required to file an annual ISR return.

The withholding applied through payroll is considered a final tax payment.

However, an annual declaration may be required when:

• The non-resident has multiple income sources in Mexico beyond salary

• They earned rental income, capital gains, or professional service fees not subject to withholding

• They received income from both a Mexican employer and a foreign source during the same year

• They wish to claim deductions or treaty benefits not already applied through withholding

Non-residents who do need to file do so through SAT's portal or via a designated Mexican fiscal representative.

For the annual return process, the annual individual tax declaration in Mexico guide covers deadlines, obligations, and filing steps.

The CFDI requirement for non-resident income payments

Every payment of Mexican-source income to a non-resident must be accompanied by a properly issued CFDI (Comprobante Fiscal Digital por Internet).

For salary payments, the employer issues a CFDI 4.0 payroll receipt (CFDI de nómina) documenting the gross amount, the ISR withholding, and the IMSS contribution information.

For other income types (professional fees, rents, interest), the relevant CFDI is a regular invoice with the appropriate withholding classification codes.

Payments made without a corresponding CFDI are not deductible for the Mexican payer and may attract SAT penalties. They also leave no audit trail for the non-resident's tax position.

For a full explanation of how CFDI works in Mexican tax and payroll compliance, the what is CFDI in Mexico guide covers the digital stamping system, classification codes, and issuing obligations.

Common non-resident tax mistakes by foreign employers

Paying a Mexico-based person as a contractor with no withholding

The most frequent error. A foreign company pays a Mexico-based individual via PayPal or bank transfer with no ISR withholding, no CFDI, and no IMSS registration.

This creates simultaneous exposure to:

• Non-resident ISR withholding liability (the company should have withheld)

• Potential misclassification (the person may be an employee, not a contractor)

• Permanent establishment risk (the payments constitute Mexican-source business activity)

For the full legal framework distinguishing employees from contractors under Mexican law, the independent contractor vs. employee in Mexico guide explains the substance-over-form test and the misclassification consequences.

Assuming treaty benefits apply without documentation

Tax treaties reduce withholding rates. But the reduced rate is not applied automatically. The non-resident must provide the Mexican payer with a valid tax residency certificate from their home country's tax authority.

Without this document, the payer is required to withhold at the standard LISR rates. If they apply the treaty rate without the certificate, the payer bears the liability for any underwithholding.

Using the resident ISR brackets for non-residents

Resident ISR uses progressive monthly brackets with 11 tax bands. Non-resident withholding uses the fixed flat rates described above. They are different tables, different calculations, and different legal bases.

Applying resident brackets to a non-resident's salary will produce the wrong withholding amount in almost every case.

Not adjusting for the annual MXN 125,900 exemption

The annual exemption of MXN 125,900 for non-resident salary income must be applied correctly. It is an annual figure prorated across the year for withholding purposes.

Employers who do not account for it withhold too much, and employees who are over-withheld must pursue refunds through SAT.

Employer obligations when paying non-residents

If your company is making payments for work performed in Mexico, regardless of where your company is based, you have obligations.

These obligations are best managed through a compliant structure that eliminates ambiguity:

• EOR arrangement: The EOR is the legal employer, handles all ISR withholding at the correct non-resident rates, issues CFDI 4.0 payroll receipts, registers and contributes to IMSS, and remits all amounts to SAT on schedule. Your company pays the EOR. The EOR handles everything else.
  
  

• Direct Mexican entity: If you have a registered Mexican entity with SAT and IMSS enrollment, your entity handles withholding, CFDI issuance, and remittance directly.
  
  

• No structure: You are exposed to permanent establishment risk, back-tax liability, IMSS penalties, and potential misclassification claims from every Mexico-based person on your payroll.
  
  

Use our Mexico ISR Calculator to model take-home pay and tax withholding for both resident and non-resident salary scenarios before you make an offer.

Managing Mexico tax compliance for non-residents

Human Resources Mexico (HRM) is a Mexico-only Employer of Record with 17 years of physical presence in Mexico.

When you hire in Mexico through HRM, every ISR calculation is handled correctly.

We apply the right ISR rates for each employee profile, issue CFDI 4.0-compliant payroll receipts every pay cycle, remit withholdings to SAT on time, and maintain documentation that protects against audit exposure.

We hold active REPSE registration and eliminate the permanent establishment risk that comes with unstructured Mexico-based payroll.

Our team is physically in Mexico and understands every dimension of the Mexican tax and employment system.

• 17 years of physical presence in Mexico: Deep knowledge of SAT compliance, ISR withholding, and payroll tax obligations

• Active REPSE registration: Verifiable in the federal government registry

• Mexico-only focus: One country, every compliance detail handled correctly

• Human support: Real bilingual professionals manage your employees' tax and payroll questions in Mexico

• Transparent pricing: One fee covers ISR compliance, CFDI issuance, IMSS, INFONAVIT, and full payroll management

Get a custom HRM proposal to see exactly what compliant Mexico employment costs for your team.

Have questions about how ISR applies to your specific non-resident situation? Ask our Mexico EOR Specialist AI Chatbot for immediate answers.

Frequently asked questions

Who qualifies as a non-resident for Mexico income tax purposes?

A non-resident is anyone who has not established their primary home (casa habitación) in Mexico.

If a person has homes in multiple countries, they are a non-resident when their center of vital interests (more than 50% of income or primary professional activity) is not in Mexico.

What income do non-residents pay tax on in Mexico?

Non-residents pay ISR only on Mexican-source income: salary for work in Mexico, rental income from Mexican property, dividends from Mexican companies, interest paid by Mexican entities, and capital gains on Mexican property.

Professional service fees earned in Mexico are also included.

What is the non-resident salary withholding rate in Mexico for 2026?

The first MXN 125,900 of annual salary income is exempt. Income from MXN 125,901 to MXN 1,000,000 is taxed at 15%. Income above MXN 1,000,000 is taxed at 30%.

These are final withholding rates, not progressive brackets.

Do non-residents need to file an annual ISR return in Mexico?

Generally no, if their only Mexican-source income is salary subject to payroll withholding.

Non-residents with rental income, capital gains, or professional service fees may need to file, or may have those obligations handled through withholding by the Mexican payer.

Can a tax treaty reduce Mexico's withholding on non-resident income?

Yes. Mexico's tax treaties with 55+ countries can reduce rates on dividends, interest, royalties, and sometimes salary.

Treaty benefits must be actively claimed by providing a tax residency certificate from the home country's tax authority to the Mexican payer.

Does working remotely from Mexico make income taxable in Mexico?

Yes. If work is physically performed inside Mexican territory, the income is Mexican-source regardless of where the employer is based or where payment is made.

The non-resident rate structure applies until the person qualifies as a Mexican tax resident.

What happens if a foreign company pays a Mexico-based person with no ISR withholding?

The foreign company may be liable for the underwithholding, and the person may owe ISR they did not pay.

The payment pattern could constitute evidence of a permanent establishment in Mexico, creating potential corporate tax liability for the foreign company on top of the payroll exposure.

Does non-resident status exempt someone from IMSS in Mexico?

No. IMSS registration and contributions are based on the employment relationship and physical work location, not tax residency status.

A non-resident employee performing work in Mexico under a formal employment relationship is subject to IMSS in the same way as a Mexican national.