FORM ACUSE-P pitch · fall 2026
Finds what a SAT audit finds. Before SAT does.
Every Mexican company runs on CFDI — government-stamped XML invoices. Acuse reads them and answers, in pesos and in seconds, the question every CFO and accountant faces monthly: what would the tax authority find if it audited us today?
LIVE PRODUCT · 100% CLIENT-SIDE · MONTERREY, MX · SOLO FOUNDER
FORM ACUSE-P · SECTION 01 — the problem
Mexico’s tax authority automated enforcement. Companies didn’t automate defense.
- SAT’s electronic audits are automated cross-checks of invoices, payment complements and bank flows — the exact data Acuse analyzes.
- Article 69-B lets SAT retroactively void deductions from blacklisted suppliers. The blacklist is public — but checking it is manual, so it happens late and never covers every invoice.
- Credit invoices without a payment complement (REP) mean non-creditable IVA — including partially-paid installments.
- Today this checking is junior accountants, a government CSV, and Excel — every month, for every client, at every accounting firm.
FORM ACUSE-P · SECTION 02 — the product
Upload the month’s XMLs. Get the audit verdict in pesos.
Live today. Runs 100% in the browser — tax data never leaves the machine, which is the whole objection-killer for accounting firms handling client data. Six findings, each quantified, each with the exact invoices listed:
FORM ACUSE-P · SECTION 03 — validated with real data
Not a mockup. The engine already ran against the real files.
FORM ACUSE-P · SECTION 04 — market
Sold through accounting firms. Every sale multiplies.
MX$100–300 per client company per month. A despacho manages dozens to a few hundred client companies, and the day-17 filing deadline returns every month — built-in recurrence.
FORM ACUSE-P · SECTION 05 — model & plan
Wedge → close
Free risk report on the firm’s own client data — no signup friction, nothing to trust, runs the same day. Convert to the paid monthly close: SAT mass-download, bank reconciliation, draft filings (DIOT) delivered before day 17. Inertia, not competition, is the honest obstacle — the wedge fights it with pesos at risk on the firm’s own clients. The report lands as the firm’s own catch — “we found this before SAT did.” The moat is the workflow, not the parser: every month a firm closes with Acuse, switching costs compound. And the core report stays client-side permanently; AI features are opt-in, per document.
Next 6 months
- M1–2 · 10 Monterrey despachos running the free report; SAT mass-download with client e.firma
- M3–4 · per-bank statement adapters; DIOT draft
- M5–6 · multi-client firm portal; recurring billing per RFC
FORM ACUSE-P · SECTION 06 — founder
Marcel Lara — automates hostile schemas for a living
- Data engineer at DeAcero, one of Mexico’s largest steelmakers: SAP→BigQuery ingestion, dbt models — hostile-schema reconciliation as a day job.
- Shipped an FDA ELT pipeline over 108,265 adverse-event reports (Airbyte · dbt · BigQuery · 27 automated tests · CI) and an applied ML risk model on the same data (ROC-AUC 0.799).
- Previous startup APOLO (robotic surgical-lamp automation): patents filed at IMPI and USPTO, first author of a Springer publication, GSEA recognition.
- Wrote 100% of Acuse’s code, solo, using Claude Code — idea to live, real-data-validated product in a week, not months.
- Also: published four books before writing reconciliation engines. Both jobs are keeping a thousand small facts consistent.
FORM ACUSE-P · SECTION 07 — the ask
Applying to YC Fall 2026
The RFS calls for AI-native compliance infrastructure. Acuse is the deterministic substrate an AI compliance agent needs — auditable math in the core, Claude at the messy edges — for the largest U.S. trading partner. Acceptance is my resignation letter — full-time from day one. What YC compresses for a solo founder in Monterrey: the first 10 firms → 100 firms playbook, U.S. incorporation and the LatAm expansion.
NEXT MILESTONE: 10 ACCOUNTING FIRMS RUNNING THE REPORT MONTHLY.