Posts tagged with SAT

Mexico's Tax Administration Service (SAT) is the Mexican fiscal authority and the practical reference for any company operating in Mexico. Articles tagged with SAT cover what this authority requires regarding mileage reimbursement: how to tie the expense to the correct CFDI, how to apply the 50-km rule from LISR Article 28, how to handle viáticos vs. local expenses, how to prepare the company for electronic auditing that cross-references CFDI with returns in near real time.

Update frequency here is high: the SAT publishes the Resolución Miscelánea Fiscal (RMF) annually, changing limits, forms, and the CFDI catalog. Posts are reviewed and dated when that happens. Use this tag if you need to decide how to set up a Mexican operation from scratch or if you want to review the current setup against the latest SAT parameters.

• Fuel control: how to stop leakage in your fleet — Where a Mexican fleet's fuel leaks — ghost fill-ups, third-party tanks, station collusion — and the per-transaction control system that catches them early.
• Mastercard network for fuel: real coverage in Mexico — What running on the Mastercard network means for your fleet: acceptance at virtually every gas station in the country, intercity routes without cash and a CFDI on every fill-up.
• Fuel cards: open-loop vs closed-loop networks in Mexico — Open loop or closed loop: how your fuel card's network architecture defines coverage, CFDI capture and control, plus a migration checklist for incumbents.
• Fuel vouchers vs fuel cards: the full comparison — Paper vouchers, electronic vouchers, bank cards and the SAT-authorized wallet: deduction, VAT, control and admin cost of each instrument in 2026.
• IEPS on fuel in 2026: the real impact on fleet cost — How IEPS raises the cost of every fleet liter in 2026, why it is not creditable like VAT, and which levers remain for the CFO when the quota rises.
• A SAT fuel audit: anatomy of a rejected deduction — An illustrative SAT electronic review of fuel spend: how cash-paid and CFDI-less deductions fall, what it costs, and the remediation plan.
• Is my fleet's fuel deductible? SAT rules for 2026 — The four LISR conditions for deducting fleet fuel in 2026: authorized payment method, valid CFDI, strict business necessity and correct accounting records.
• SAT requirements to deduct 100% of fuel in 2026 — An operational checklist of SAT fuel requirements: authorized wallet issuer, per-fill CFDI, mileage logbook, XML archiving and record retention periods.
• Invoicing fuel in Mexico: automatic CFDI without portals — How to eliminate manual fuel invoice capture: what the SAT requires on each CFDI, how per-fill automatic invoicing works and how much accounting time you recover.
• Fuel CFDI errors that cost your fleet its VAT credit — The seven most common CFDI 4.0 errors in fleet fuel: generic RFC, wrong payment method, incorrect product key, and how to eliminate them at the root.
• Fleet management in Mexico: the CFO's financial guide — Fleet management from the finance seat: cost structure, fuel as the largest controllable line item, SAT tax risk and where to start measuring.
• Fleet management KPIs the CFO should track — Seven fleet finance indicators to review monthly: cost per kilometer, fuel efficiency, CFDI capture, anomalous fill-ups and healthy ranges for each.
• Fuel cards for companies in Mexico: the 2026 CFO guide — A decision guide for CFOs in Mexico: how to compare business fuel cards, capture automatic CFDIs and deduct 100% of fleet fuel spend.
• How to choose a business fuel card in Mexico — An evaluation checklist for finance directors: acceptance network, automatic CFDI, per-vehicle controls, real fees and a friction-free rollout plan.
• Reimbursing employees from a Mexican RESICO company: step by step — How to reimburse employees for mileage without it being reclassified as salary under IMSS and ISR.
• Mileage deduction under Mexico's RESICO regime (2026) — Mexico's RESICO regime simplifies tax for SMEs and individuals, but vehicle deductions follow specific rules. The complete guide.
• SAT electronic audit: how to prepare documentation for vehicle reimbursements — Guide to responding to SAT electronic reviews via Buzón Tributario with legal deadlines and monthly XML accounting.
• Digital trip logbook for the SAT: requirements, formats and tools 2026 — How to build a trip log the SAT accepts in electronic audit: mandatory fields, suggested format, 5-year retention and use of GPS and timestamps.
• RESICO 2026: how Mexico's simplified tax regime affects mileage reimbursement — A practical guide to how Mexico's RESICO regime impacts vehicle expense deduction, income thresholds, and CFDI obligations in 2026.
• CFDI 4.0 for travel and mileage reimbursement: required fields step by step — Practical guide to CFDI 4.0 fields, Nómina and Viáticos complements, Carta Porte, and RFC validations for Mexican reimbursements.
• CFDI 4.0, fuel, and mileage reimbursement in Mexico: what changed in 2026 — SAT updated the CFDI 4.0 filling guide in 2026. How it affects fuel reimbursement.
• Deductible mileage in Mexico 2025: SAT Guide — Complete guide on mileage deduction according to Mexican SAT (Tax Administration System) for 2025.
• Mileage policies in Mexican companies — How to structure corporate mileage reimbursement policies in compliance with Mexican legislation.
• Tax receipts (CFDI) for mileage reimbursement in Mexico — Complete guide on CFDI issuance for mileage reimbursement according to Mexican tax legislation.
• Mileage regulations in Mexico for 2025 — Learn about Mexican laws and regulations on business mileage reimbursement.