Guides

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Clear steps for SAT, CFDI, and tax obligations.

Mexican transport coordinator and Rarámuri field technician reconciling a fuel-card charge with mileage, service route, and CFDI evidence.
Mexico tax deductions12 min read

Mexico Fuel Tax Deduction in 2026: Payment, CFDI, and a Vehicle-Level Audit Trail

A Mexican fuel deduction requires an authorized payment method from the first peso, valid CFDI evidence, a connected vehicle, and...

Fintax Team · Sep 30, 2026Read guide →
Mexican bicycle courier and Zapotec seamstress mapping one RFC identity into separate payroll and independent-activity start paths.
Mexico RFC11 min read

When Do You Need to Register With SAT? Mexico's 2026 RFC Map for Individuals

Mexico has separate moments for obtaining an RFC, activating an economic activity, and updating existing duties. This 2026 map shows...

Fintax Team · Sep 27, 2026Read guide →
Two Mexican colleagues securing a restored SAT credential after comparing the available access routes.
SAT ID9 min read

Mexico SAT Password in 2026: SAT ID, e.firma, Requirements, and Rejection Fixes

Mexico's SAT Password recovery route depends on whether the taxpayer is an individual with e.firma, an SAT ID applicant, or a legal...

Fintax Team · Sep 24, 2026Read guide →
Business owner and Mexican tax adviser comparing a monthly SAT installment schedule with a deferred payment.
Mexican tax debt13 min read

SAT Tax Debt Payment Plans in Mexico: Installments, Deferral, and 2026 Requirements

How to request up to 36 SAT installments or a payment deferral of up to 12 months, including 2026 eligibility, rates, documents, and...

Fintax Team · Sep 21, 2026Read guide →
Chief financial officer building a 2027 fiscal budget by tax.
2027 Budget12 min read

Fiscal Budget 2027: How to Provision ISR, VAT, Payroll, and Annual Taxes

Model ISR, VAT, payroll, and annual taxes by trigger, date, and scenario to build a 2027 tax reserve that truly follows your operations.

Fintax Team · Sep 20, 2026Read guide →
Compliance officer reviewing thresholds and file of vulnerable activity.
AML13 min read

Vulnerable Activities and AML Notices 2026: Thresholds and File

Identify vulnerable activity, client, beneficiary, accumulation, and thresholds before submitting AML notices and saving acknowledgments.

Fintax Team · Sep 17, 2026Read guide →
Accountant updating a historical tax loss schedule.
Tax Losses11 min read

Tax Losses: Updating, Amortization, and Control File

Manage tax losses by fiscal year with origin, updating, applications, balance, and support before reducing profits.

Fintax Team · Sep 14, 2026Read guide →