Blog & Resources
Guides, tax news and tips for doing business in Mexico.
Professional fees invoicing in Mexico: complete CFDI 4.0 guide (2026)
A doctor who issues their CFDI with 0% IVA instead of "Exempt" is making a fiscal error. A professional in RESICO who lets their client withhold 10% ISR is losing money. This guide resolves the four most common confusion points in professional fee invoicing in Mexico.
How to pay monthly IVA (VAT) to SAT in Mexico: step-by-step guide 2026
SAT pre-fills your IVA return with the month's CFDIs — but doesn't verify which ones you've already paid. Guide with the complete formula (IVA charged − creditable − withheld received), numerical example, exact portal navigation, and what to do when the result is a balance in your favor.
Accounting for digital marketing agencies and creatives in Mexico (2026)
Marketing agencies in Mexico have a unique fiscal profile: Mexican clients (16% IVA) and foreign clients (0% IVA), Meta and Google expenses without CFDI, and freelancers requiring mandatory ISR and IVA withholding. Guide with correct SAT codes and step-by-step procedures for each case.
Sociedad Civil in Mexico: what it is and when it beats an SA de CV (2026)
The SC pays the same 30% ISR as the SA de CV, but offers one mechanism most overlook: partner anticipos (advances) are deductible for the company and taxed at the partner's progressive rate. Practical guide with comparison table and real cases for professional firms.
Double taxation in Mexico: tax treaties with USA, Spain and other countries (2026)
Most articles about double taxation in Mexico describe the 183-day rule incorrectly, miss the saving clause in the Mexico-US treaty, and don't mention Russia suspended its US treaty in 2024. This guide covers the three treaties most affecting expats: USA, Spain and Russia, withholding rates each reduces, and cases where the treaty exists but doesn't help.
How to declare YouTube, Twitch and social media income to SAT Mexico in 2026
Since April 2026, SAT has real-time access to YouTube, TikTok and Twitch payment data. Complete guide: correct tax regime for content creators, how the W-8BEN form reduces AdSense withholding from 30% to 10%, and what to do if you haven't declared for years.
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