BLACKBOX / LEGAL & TAX AI ENGINE CDMX --:--SF --:--OPERATIONAL
+ + + +

Fluent in tax and AI.
Native in venture.

Cross-border tax and venture financing counsel for founders and the investors behind them. We know AI the way we know the tax code.

WHILE YOU RAISE ABROAD, WE KEEP YOUR MEXICAN SUBSIDIARY AUDIT-READY — SAT, IMSS, CORPORATE BOOKS AND ALL.
OUR PRACTICES
US ⇄ MX OBLIGATION MAP LIVE
$
2014
FOUNDED, MX + SF
Weeks
NOT MONTHS, FOR LAUNCHING A MEXICAN ENTITY
60 min
OF YOUR TIME, TOTAL
24/7
OBLIGATION MONITORING
01 — TWO WAYS TO ENGAGE

We build AI you own. Or we run it for you.

MODEL A
We build it. Yours to keep.

Custom AI solutions for your legal & tax stack — contract intelligence, obligation tracking, entity management, compliance workflows — designed by our lawyers, trained on your entities and jurisdictions. Your team owns and runs the software.

ENGAGEMENT: DESIGN → BUILD → HANDOVER
MODEL B
We run it. GRC autopilot.

The Engine monitors every obligation of your Mexican subsidiary — SAT, IMSS, RNIE, AML/UBO, labor — and BlackBox lawyers review, file and sign. Your parent gets evidence on a US calendar: SOX sub-cert ready, FCPA books clean, screening logs on demand.

ENGAGEMENT: MONTHLY AUTOPILOT · LAWYERS ON THE LOOP
02 — THE ENGINE CONSOLE

Not a chatbot.
A control tower.

Your Mexican subsidiary lives in one console: every obligation, deadline, credential and filing — with an alarm radar that warns 🟠 1 month and 🔴 15 days before anything is due.

↳ THIS ONE IS LIVE — CLICK THE MODULES.

Entity manager: cap table, actas, powers of attorney, corporate books
e.firma / CSD vault with renewal alarms
2026 Tax Reform tracker: 33 changes monitored, 11 high-severity flagged
Bilingual by design — ES operative documents, EN summaries for the parent
engine.blackboxmx.com — Compliance Calendar · MX-Co
LIVE
AI insight.
03 — WHAT THE ENGINE WATCHES

Every obligation.
Both sides of the border.

33 REFORM CHANGES TRACKED FOR 2026
11 HIGH-SEVERITY FLAGGED
↳ CLICK A DOMAIN FOR ITS DETAIL SHEET
Every cell is a monitored workflow — with legal basis, deadline, alarm and evidence trail. GET THE FULL COVERAGE MAP
04 — RUN A SCAN ON YOUR SUB

Four answers. Your obligation map, in seconds.

The same rule set the Engine runs in production — pointed at a sketch of your Mexican subsidiary.

RUN SCAN →
engine.blackboxmx.com — preliminary scan
$ scan sub --border=us-mx --profile=custom
Awaiting profile…
↳ Answer the four questions, then RUN SCAN.

The production Engine resolves your real entity graph — this preview maps the headline obligations only.
05 — FROM DELAWARE TO AUTOPILOT

Weeks, not months. About 60 minutes of your time — the Engine and our lawyers do the rest.

↳ CLICK A PHASE FOR ITS CHECKLIST
PHASE CHECKLIST —
✓ BILINGUAL DOCS (ES OPERATIVE / EN SUMMARY)✓ e.FIRMA VAULT✓ ALARM RADAR 🟠 1 MO / 🔴 15 D✓ MONTHLY EVIDENCE PACK
START THE CLOCK — FREE 30-MIN
06 — THE COLLISION

Two governments. One controller.
Nobody shares a calendar.

Your parent runs on a quarterly close. Mexico runs on the 17th of every month. They were not designed to coexist, and the person standing between them is one finance lead in Mexico City.

U.S. parent obligation Mexican statutory obligation Both, inside the same window
U.S. parent
Mexican entity

Deadlines shown for a December fiscal-year-end issuer with a Mexican operating subsidiary. Mexican dates recur monthly unless noted; U.S. dates assume large-accelerated-filer timing. Your calendar will differ — that is the point of the assessment.

This chart is one scenario. We build the same calendar for your company — your parent's filings, your Mexican statutes, every alarm and citation — compiled by the Engine, maintained by our lawyers. BUILD MY CALENDAR — FREE 30-MIN
07 — THE FIRM BEHIND THE ENGINE

Full-service since 2014. We negotiated the first ride-sharing regulation in Latin America — and closed Jüsto's Series A, the largest in Latin American history.

The Engine isn't a startup experiment — it's a decade of US–LATAM practice, compiled. As counsel to Cabify we obtained the amparo against Mexico City's taximeter rule and annulled PROFECO's millionaire fine. Seven practices stand behind every filing.

CABIFYJÜSTOCLIVIKOLORS — SOME OF THE STARTUPS WE'VE WORKED WITH
08 Recognition Press / Print

On the cover.

México’s legal press on the firm behind the Engine.

Líderes Mexicanos cover, Abogados 2026 edition — BlackBox founding partners Víctor Aguirre and Carlos Aguerrebere
In print — Líderes Mexicanos · MX

Líderes Mexicanos · Abogados 2026

Two founders. One cover.

Líderes Mexicanos puts founding partners Víctor Aguirre and Carlos Aguerrebere on the cover of the 11th Abogados edition — the annual review that maps México’s legal structure — recognizing a new model of legal practice built on innovation. Twelve years advising venture-backed startups across two legal systems, from amparo wins to AI-run compliance.

“Impulso a las startups en crecimiento.”

Cover line — Líderes Mexicanos, 2026Momentum for startups in growth.
Edition
Abogados: La Estructura Jurídica de México · 2026
Cover story
“Los socios legales de las startups” · Apr 2026
In the press
El Financiero — Reconocimiento al Liderazgo Jurídico 2026
WE BELIEVE IN DISRUPTION — AND WE KNOW THAT YOU TOO

Put your Mexican subsidiary on autopilot.

no obligation — conflicts check first
BlackBox Startup Law
MEXICO CITY — Campos Elíseos No. 403, Col. Polanco II Sección, Ciudad de México, CDMX, 11530, México · +52 55 6728 1929
SAN FRANCISCO — 166 Geary St. Suite 1500, San Francisco, CA 94108, United States · +1 646 544 8029
The choice of a lawyer is a very important decision and should not be based solely upon advertisements. If you are not already one of our clients, the attorney-client relationship can only be established after we have discussed the matter with you, run a conflicts check, and you and we have both agreed to the terms of the engagement. Until such time, do not send us any confidential or sensitive information. AI outputs are reviewed by licensed attorneys; this page is not legal advice.