Institutional-Grade Legal Intelligence

The law is written.
Its meaning is not.

NexxoSAT connects Mexican federal tax law, authority, evidence, and legal reasoning in one intelligence system.

The architecture of Mexican federal tax law
CPEUMConstitución Política· Ley de AmparoDefensa constitucional· CFFCódigo Fiscal de la Federación· LISRImpuesto sobre la Renta· LIVAImpuesto al Valor Agregado· RMF · DOFResolución Miscelánea · Anexos· Criterios SATCriterios normativos· PRODECONCriterios sustantivos· LFPCA · TFJAVía contenciosa· SCJNJurisprudencia vinculante· BEPS · OCDEMarco internacional·

An institutional-grade intelligence system engineered for Mexican federal tax law — connecting legislation, administrative criteria, jurisprudence, doctrine, and legal change in one reasoning architecture.

Every discipline of Mexican tax law lives with a different expert.
NexxoSAT brings them into one.

Materialidad
Razón de Negocios
Capitalización Delgada
Dividendos Fictos
Precios de Transferencia
Estrategia de Amparo
Acreditamiento de IVA
Establecimiento Permanente
The platform

It reasons across the whole matter.

Present a complex fact pattern. NexxoSAT connects the relevant facts, evidence, provisions, authorities, doctrine, and reforms.

It produces a clear conclusion, structured reasoning, and a verifiable authority chain — showing what can be supported, what remains uncertain, and why.

NEXXOSAT
QUESTION → GRAPH → DOSSIER
New matterPrivate workspace
YOU
Matter question
SAT is questioning the materialidad of our management fees. We have contracts and CFDIs. What else do they want?
PDFManagement Services Agreements
6 documents
XMLCFDI Documentation
24 records
FYApplicable period
Tax year 2026
+ Add matter facts⌁ Attach documents◷ Applicable date
THE MATTERSAT REVIEWFACTSEVIDENCELEGISLATIONDOCTRINEAUTHORITYTEMPORALITY CONTRACTSCFDIsDELIVERABLESCFF 69-BMATERIALIDADPRODECONTFJASCJNCONCLUSIONSUPPORTED
NEXXOSAT LEGAL INTELLIGENCEES · EN

Confidential Intelligence Dossier

01 / Legal conclusion
02 / Reasoning
03 / Authority chain
✓ Grounded in verified legal authority
Every conclusion has an authority behind it.
Six capabilities

What a single reasoning corpus makes possible.

I

Confidence-aware analysis

Each conclusion communicates its evidentiary strength and areas requiring professional review.

II

Conflict & gap detection

It finds the breaks in the law's cross-references before they become your client's problem.

III

Temporal intelligence

Analyze the applicable law within its historical and legislative context.

IV

The doctrine layer

Materialidad, sustancia económica, razón de negocios: what the law means, sourced from the rulings and criterios where meaning actually lives.

V

Self-evolving

Designed to incorporate new legislation, authority, and regulatory change.

VI

The ontology

A formal intelligence architecture for Mexican federal tax law.

Who it's for

Built for the teams who carry the responsibility.

Corporate groups

Intercompany services, financing, and profit flows across multiple entities: the full chain of exposure, mapped.

Tax firms

Where articles, criterios, and RMF rules collide on the same problem — resolved with the authorities ranked.

Litigation firms

Defense strategy grounded in the jurisprudencia: what controls, what binds, what has actually prevailed.

Multinational companies

The question arrives in English. The analysis returns citing the law in both languages. Headquarters finally sees what Mexico sees.

Built by Argus AI Labs

Intelligence grounded in verified legal authority.

NexxoSAT is built by Argus AI Labs, builders of the architecture behind expert intelligence. The system reasons over a validated legal record traced to official publications.

arguslabs.ai →

Verifiable provenance

Every element of the record traces to an official publication.

Bounded reasoning

What the system cannot support with evidence, it does not assert.

Confidential by design

Client matters never train public models.

Every conclusion has an authority behind it.

If Mexican federal tax law matters to your institution, we should talk.