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The AI workspace for accountants in Mexico

Your books up to date, while you sleep

CONTARO downloads your CFDI, creates journal entries, builds financial statements and calculates taxes, around the clock. You direct it in a conversation and sign off on every result.

Early access by invitation · No card required

  • 5 years of CFDI
  • Automatic journal entries
  • Real-time financial statements
  • Calculated taxes

Works with

  • Claude
  • ChatGPT
  • Gemini
Watch CONTARO work
contaro

While you were sleeping

  1. 1,284 CFDI downloaded
  2. 412 journal entries created
  3. September taxes calculated

Good morning. Your September close is ready for review.

Review 4 exceptions
Example with illustrative data

Before and with CONTARO

Stop entering data. Start reviewing

  • Today: Downloading CFDI from the SAT portal, one RFC at a time

    With CONTARO: Five years of CFDI, downloaded and always at hand

  • Today: Entering journal entries by hand, one by one

    With CONTARO: Journal entries created from each CFDI, with the evidence linked

  • Today: Waiting for the close to see how the month went

    With CONTARO: Real-time financial statements, whenever you need them

  • Today: Building tax workpapers in Excel for every tax

    With CONTARO: ISR and IVA calculated from your books, ready for review

CONTARO agent

An AI accountant that never goes home

The CONTARO agent works on its own computer: it downloads, posts and prepares the work while your team rests. Leave it tasks in the afternoon and in the morning you'll find results, exceptions and a summary.

Works across all your RFCs at once

One, ten or a hundred. It moves in parallel and doesn't tire out on RFC number 40.

Routines that run themselves

Schedule daily CFDI downloads, weekly journal entries or monthly calculations.

Flags what needs your judgment

Anything it can't resolve with certainty becomes an exception for you to decide.

Every action, logged

See what it did, when and with which documents, step by step.

Night shift

12 RFCs · September 2026
  1. Download CFDI for every RFC1,284 CFDI
  2. Create journal entries from CFDI412 entries
  3. Update trial balance and statements12 RFCs
  4. Calculate the month's ISR and IVA12 RFCs
  5. Summary ready for your review4 exceptions

All from one conversation

Ask in your own words. Watch it come together

Type what you need and CONTARO builds the journal entry, report or calculation in front of you. Adjust it with another instruction, the way you would with your team.

CONTARO
Example workflow
You

Download the September invoices, create the journal entries and calculate taxes.

Done. Your invoices, journal entries and taxes are prepared. You review and approve.

You: Download the September invoices, create the journal entries and calculate taxes.

Your workspaceSeptember 2026
TaxesCONTARO

Your taxes at a glance

Workpapers · September

VAT collected$16,000
VAT deductible− $9,600
VAT for the period$6,400
Provisional income tax$12,000
Review and approve

Supporting detail for every calculation

Ready for your reviewIllustrative data
Done. Your invoices, journal entries and taxes are prepared. You review and approve.
See how asking, reviewing and approving works in CONTARO. Shown with illustrative data.

Our AI or yours

Work in CONTARO or from your own AI

CONTARO includes its own AI. If your team already uses Claude, ChatGPT or Gemini, connect it through MCP and ask for the work from the conversation you already have open.

Included

CONTARO AI

Lives inside your workspace and knows your chart of accounts, your rules and your history. Nothing to set up.

Via MCP

Your assistant, connected

Connect Claude, ChatGPT or Gemini to CONTARO's MCP server to look up CFDI, prepare journal entries or review taxes without switching windows.

  • Claude
  • ChatGPT
  • Gemini

Whichever AI you use, permissions and approvals stay in CONTARO.

The tools

All your accounting work, in one place

From CFDI to taxes, every tool works on the same information. No exporting and no entering anything twice.

CFDI vault

Every CFDI from the last five fiscal years, issued and received, in XML and PDF. Find any invoice in seconds.

Accounting

Chart of accounts, general journal and automatic journal entries from your CFDI. Every entry linked to its invoice.

Financial statements

Balance sheet, income statement, trial balance and subledgers in real time. Design the reports you need.

Taxes

ISR, IVA and withholdings calculated from your CFDI and other sources, with workpapers ready for review.

Illustrations using example data.

Two versions

Built for the way you work

The same platform and the same agent, designed for your company's accounting team or for your firm.

CONTARO for Business

For your company or group

Your accounting team, with an agent that never sleeps

For the accounting and finance team at your company or group. One or more RFCs, real-time numbers and the close moved forward every morning.

Explore CONTARO for Business
CONTARO for Firms

For your firm

More clients, the same team

For firms that keep their clients' books. Every RFC in one place, overnight work across the whole client list and your team focused on reviewing and advising.

Explore CONTARO for Firms

Control

AI prepares. You approve

Every entry, calculation and report keeps its evidence. Nothing is posted without your sign-off, and every action the agent takes is logged.

  • Evidence linked to every result
  • Your approval before anything is posted
  • Permissions by user and by RFC
  • A log of every agent action

Early access

Your next close can start tonight

Request early access to CONTARO. We're opening spots by invitation and we'll help you connect your RFCs.

  • Early access by invitation
  • We'll help you connect your RFCs
  • No card, no commitment

Request early access

We're opening spots by invitation. It takes less than a minute, no card required.

Who is CONTARO for? *

By continuing you agree that we may contact you about your CONTARO access.

Frequently asked questions

What you need to know