Mileage regulations in Mexico for 2025
Learn about Mexican laws and regulations on business mileage reimbursement.
Why understanding SAT rules is critical for companies in Mexico
Mexico has one of the most detail-oriented tax systems in Latin America when it comes to vehicle expense deductions.[^sat-cfdi-2] SAT (the Mexican tax authority) evaluates each peso reimbursed against three objective criteria: it is strictly indispensable to operations, it is supported by a valid CFDI, and it was paid through a traceable channel. Companies that ignore this tripod typically lose the deduction during audit and also face ISR recalculation on the reclassified amount. In 2025, with intensified electronic audits and automatic cross-referencing of data with banks, the cost of getting this wrong has risen significantly.
The rule of vehicle deduction limits
Mexican income-tax law sets a deduction ceiling for company-owned vehicles equivalent to roughly MXN 200,000 of the vehicle's value for annual depreciation purposes. For mileage reimbursement to employees who use their own vehicle, there's no absolute peso ceiling, but SAT requires the rate to pay business use proportionally, backed by a trip log and CFDI whenever monthly accumulated value exceeds two thousand pesos per employee. Companies under the simplified RESICO regime follow slightly different rules that exclude some accelerated depreciation benefits.
2025 market rates by region and vehicle type
Rates vary by state and vehicle type. As a reference, compact passenger cars sit between MXN 4.00 and MXN 5.20 per km, mid-size sedans between MXN 4.80 and MXN 6.20, SUVs between MXN 5.80 and MXN 7.80, and pickups between MXN 6.50 and MXN 9.00. Northern states like Nuevo León, Chihuahua, and Sonora tend to have rates slightly above average because of Magna gasoline prices. Mexico City and Guadalajara follow the national standard. Yucatán and Quintana Roo practice higher values for the same reason. Reviewing the table twice a year is common practice.
Mandatory CFDI: when to issue and how
The practical rule is simple: individual or accumulated reimbursements above two thousand pesos require either a Nómina or Egreso CFDI issued by the company to the employee.[^sat-cfdi-2] The CFDI must contain issuer and receiver RFC, an explicit concept of "Reimbursement for personal vehicle use," a breakdown of kilometers and rate applied, PUE payment method, and SAT code 84111506 (Travel expenses). Late issuance (more than 72 hours after payment) is already acceptable grounds for SAT to reject the deduction, even if the amount is correct.
**Trip log: the record that backs the reimbursement**
In addition to the CFDI, SAT requires a trip log containing at least date, origin, destination, distance, business purpose, and vehicle identification. The log can be digital, and in practice SAT prefers digital records with timestamps because they eliminate tampering. Reimbursements without a log or with a log inconsistent with registered plates are rejected during electronic audits. The good news is that modern tools generate the log automatically from GPS, closing the evidence loop.
Implications for the employee in personal ISR
When reimbursement is within limits, properly documented, and paid through a traceable channel, it is exempt from ISR for the employee. When any of these criteria fails, SAT reclassifies the amount as employee income subject to ISR withholding and IMSS contributions. That means a company's mistake becomes the employee's problem on the annual return. A well-designed policy, with CFDI issued correctly and the trip log preserved, protects both sides at once.
How Quilometragem fits into the SAT workflow
The platform generates a digital trip log with integrity hash, calculates the rate per vehicle according to the configured table, and issues formatted reports so the company's accountant can generate the CFDI without friction. Integration with Clara lets each exported batch land in the finance dashboard with a reference to the corresponding CFDI, closing the traceability loop. For multinational companies, the configuration module allows distinct local policies (Mexico, Brazil, Colombia) on the same instance without mixing bases.
Next steps to be ready before the next audit
Run three essential checks this quarter: review whether every reimbursement above two thousand pesos has a CFDI issued within 72 hours, audit a sample of trip logs from the last six months, and confirm that payment proofs are traceable. If a gap appears, regularize it with your accountant before it becomes a liability. In parallel, formalize the policy in a document signed by leadership and share it with the team.