RESICO: reconstructing income from a net bank deposit
A bank deposit can be smaller than collected income before withholding. Reconciling each transaction helps separate VAT, withheld ISR...
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How to review your RESICO eligibility in 2026
A RESICO eligibility review should distinguish actual income from forecasts, count nonconsecutive missed payments and document the scope...
Undeclared rent: how to reconstruct your Mexican tax position
Adding rental activity to an existing RFC does not resolve earlier tax returns. Addressing undeclared rent requires a period-by-period...
What to send your accountant before calculating a monthly return
A useful monthly handoff connects tax documents with receipts and payments, identifies unresolved items and records corrections before...
Lost your e.firma KEY file? How to choose your renewal route
Downloading a CER certificate does not recover the private KEY file. For an adult individual taxpayer, the renewal route depends on...
A problem with Mexico's SAT: clarification, a PRODECON complaint or legal defense?
The appropriate response to a SAT problem depends on the document and the right affected. Administrative clarification, a complaint and...
You received a Mexican tax diagnosis: turn findings into documented corrections
A useful tax diagnosis connects each finding to a period, document, difference and next action. Separate confirmed errors from missing...