My account
Guides

Understand your taxes.
Make better decisions.

Clear steps for SAT, CFDI, and tax obligations.

A Mexican professional reviews registration records on a laptop at a small desk.
Guides5 min read

Independent services: what to update if you already have a salary RFC

Starting independent services with an RFC already registered for salary income calls for reviewing and updating activities and...

José Miguel González · Oct 23, 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...

Valeria Matoviche · Sep 27, 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.

Andrés Chávez · Sep 14, 2026Read guide →
Fintax

Your accounting is in good hands.

Services

  • Plans
  • Tax advisory
  • Tax and employer registration
  • Tax regularization
  • Monthly SAT tax compliance
  • Invoicing
  • Payroll and employer procedures
  • Specialized tax services
  • SAT procedures
  • Annual tax return
  • Follow-up
  • Reconciliation
  • SAT alerts
  • Remote support
  • Accountants by state
  • Accounting for RESICO
  • Compare plans
  • Use cases

Resources

  • News
  • Blog
  • Guides
  • Tax calendar
  • Tools
  • Downloads
  • AI prompts
  • Fintax updates

About

  • Who we are
  • Team
  • How we work
  • Testimonials
  • Security
  • Book advisory

Help

  • Contact
  • Frequently asked questions
  • Terms and conditions
  • Privacy notice
(81) 2188 9524

Galeana 437, Colonia Centro 64000 Monterrey, N.L.

Antonio L. Rodríguez 2100 Colonia Santa María 64650 Monterrey, N.L.

© 2026 Fintax. All rights reserved. Made by Metanoia Talent.

Privacy noticeTerms and conditionsCookies