The month's taxes, without spreadsheets.
Download CFDI from the SAT with each taxpayer's e.firma, compute income tax and VAT for seven regimes with each year's rate table, and compare the result with what was filed.
What it does
SAT download
Issued and received, CFDI 3.3 and 4.0, with the e.firma.
Seven regimes
601, 603, 605, 606, 612, 625 and 626, with VAT credit carried forward.
Deductions
Rules, cache and AI for what doesn't match; you confirm.
What was filed
The receipt and payment are read from the PDF and compared.
Exports
Excel, CONTPAQi and Aspel COI.
Tax chat
Questions about a taxpayer's numbers, with their context.
See it in one minute
Your data, wherever you decide
Your project documents stay wherever you put them.
On your servers or in the cloud
Installed on your infrastructure, or on a dedicated instance we operate on Google Cloud.
Encrypted files
Every file is encrypted with AES-256-GCM and a per-project key; connections run over TLS.
Audit log
Key actions are logged with user, date, IP and device.
AI privacy
Enterprise APIs that don't train on your data, or a local model on your infrastructure.
Our security standards
Frequently asked questions
Which regimes does it compute?
601 (companies), 603 (non-profits), 605 (salaries), 606 (rentals), 612 (business and professional activity), 625 (platforms) and 626 (RESICO). The calculation is an estimate to reconcile against what the accountant files; it doesn't replace them.
Shall we see it with your documents?
No commitment · Support in Spanish and English