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Clear steps for SAT, CFDI, and tax obligations.

Person in charge renewing the CSD while keeping the business invoicing active.
Electronic invoicing9 min read

SAT Digital Seal Certificate 2026: How to Renew the CSD Without Interrupting Invoicing

SAT Digital Seal Certificate 2026: how to check expiration, renew the CSD, protect files, and prevent invoicing from stopping.

Juan Elizondo · Jul 20, 2026Read guide →
Merchant issuing and reviewing an electronic invoice for a customer.
Guías7 min read

CFDI electronic invoicing in Mexico: 2026 guide

A 2026 guide to CFDI electronic invoicing in Mexico: receiver data, tax fields, PUE and PPD, payment complements, cancellations and...

Cassandra Torres · Jun 15, 2026Read guide →
Entrepreneur asking an advisor key questions about registration, invoicing, and compliance.
Guías6 min read

SAT, RFC and CFDI questions for Mexican SMBs

Answers for Mexican SMBs about RFC registration, tax regimes, e.firma, CSD, CFDI 4.0, monthly filings, the Tax Mailbox and SAT records.

Jimena Cruz · Apr 22, 2026Read guide →