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Argentina Monotributo Calculator — connector documentation

  • MCP endpoint: https://ar-monotributo.connectorbay.com/mcp
  • REST API: POST https://ar-monotributo.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://ar-monotributo.connectorbay.com/openapi.json
  • Transport: Streamable HTTP, stateless, MCP specification 2025-06-18 or later
  • Authentication: none required. An optional Authorization: Bearer <key> raises rate limits.
  • Health: https://ar-monotributo.connectorbay.com/health · Tool schemas: https://ar-monotributo.connectorbay.com/tools.json
  • Publisher: Unify Dynamics LLC · connectorbay.com/ar-monotributo · agent@connectorbay.com

What Argentina Monotributo Calculator is for

Argentina Monotributo Calculator applies the ARCA (ex-AFIP) category table A to K, in force from 1 August 2026, to a small taxpayer's numbers. find_category returns the category that covers annual gross income and, when given, surface, energy use, rent and unit price, and names the parameter that drives it. monthly_payment and annual_cost split the payment into impuesto integrado, SIPA pension contribution and obra social contribution for services or goods. headroom_to_ceiling shows the pesos and percent left before the ceiling of the category, project_ceiling_crossing finds the month in which a constant monthly run-rate makes the trailing 12-month income pass it, and compare_categories prices a move between two categories. Every answer states the table date it used, refuses dates the loaded table does not cover (before 2026-08-01 or from the expected next update on 2027-02-01) and carries the source, the verification level and plain caveats. Exclusion causes, activity limits and recategorization deadlines are not modelled. General information only, not tax advice.

Ask your assistant things like:

  • "Which monotributo category fits annual income of 30,000,000 pesos for a services business?"
  • "What does a category C monotributista pay each month, and how is it split?"
  • "I invoiced 20,000,000 pesos in the last 12 months: how far am I from the ceiling of category C?"
  • "If I bill 3,000,000 pesos a month, when does my trailing 12-month income pass the category C ceiling?"
  • "How much more per year is category D than category C for services?"

What it does

  • find_category: Category that covers annual gross income, activity and optional surface, energy use, rent and unit price, with the driving parameter.
  • monthly_payment: Total monthly payment and its three components (integrado, SIPA, obra social) for a category and activity.
  • headroom_to_ceiling: Pesos and percent left before the category income ceiling given income of the last 12 months, and the next category ceiling.
  • project_ceiling_crossing: Month in which a constant monthly income run-rate makes the trailing 12-month total exceed the category ceiling.
  • compare_categories: Difference in monthly and annual cost between two categories for one activity.
  • annual_cost: Twelve monthly payments for a category and activity, split into integrado, SIPA and obra social.
  • list_category_table: The full A to K table in force on a date with its effective date and source.
  • explain_components: Plain-language split of the monthly payment into integrado, SIPA and obra social, with the amounts when a category is given.

Data sources

Reference data from official sources (arca.gob.ar); every answer states its source, date and validity period.

What it is not

Argentina Monotributo Calculator is independent; not affiliated with, endorsed by or operated by any government body, central bank, standards body or scheme operator. Names of rails, schemes and standards are used only to say what a tool works with. It is read-only: it never sends, pays, files or signs anything for you, and it never looks up private individuals.

Not advice. General information only, not legal, tax, accounting or payment advice. Argentina Monotributo Calculator is an independent tool: it is not affiliated with, endorsed by or operated by any government body, central bank, standards body or scheme operator. Rates, thresholds and rules change; check the cited official source and confirm with a qualified professional before you rely on a result.

Built for: Argentina. Languages: English.

Tools

Look up & validate

find_category — Category that covers annual gross income, activity and optional surface, energy use, rent and unit price, with the driving parameter. Use for "Which monotributo category fits annual income of 30,000,000 pesos for a services business?". Args: annual_income, activity, surface_m2, annual_energy_kw, annual_rent, unit_price, on_date.

list_category_table — The full A to K table in force on a date with its effective date and source. Use for "Show me the whole monotributo table in force today.". Args: activity, on_date.

Calculate

compare_categories — Difference in monthly and annual cost between two categories for one activity. Use for "How much more per year is category D than category C for services?". Args: from_category, to_category, activity, on_date.

Reference & guides

monthly_payment — Total monthly payment and its three components (integrado, SIPA, obra social) for a category and activity. Use for "What does a category C monotributista in services pay each month?". Args: category, activity, on_date.

headroom_to_ceiling — Pesos and percent left before the category income ceiling given income of the last 12 months, and the next category ceiling. Use for "I invoiced 20,000,000 pesos in the last 12 months: how far am I from the ceiling of my category?". Args: income_last_12m, category, on_date.

project_ceiling_crossing — Month in which a constant monthly income run-rate makes the trailing 12-month total exceed the category ceiling. Use for "If I bill 3,000,000 pesos a month, when does my trailing 12-month income pass the ceiling of category C?". Args: category, expected_monthly_income, income_last_12m, from_month, monthly_history, on_date.

annual_cost — Twelve monthly payments for a category and activity, split into integrado, SIPA and obra social. Use for "What is the yearly cost of category E for a goods seller, pension and health included?". Args: category, activity, on_date.

explain_components — Plain-language split of the monthly payment into integrado, SIPA and obra social, with the amounts when a category is given. Use for "What are the three parts of the monotributo payment for category B?". Args: category, activity, on_date.

Conventions

  • Read-only. Every tool reads public data or computes; nothing is written anywhere and nothing about the user is stored.
  • Result envelope. ok: true with data, or ok: false with a structured error (bad_input, not_found, upstream_error). degraded lists optional sources that were unreachable.
  • Rate limits. Free tier 60 tool calls/minute and 300/day per user (keyed on the user identifier supplied by the host agent, else client IP); Pro keys raise this. Over-limit calls return HTTP 429 with Retry-After. initialize and tools/list are never counted.

Support

agent@connectorbay.com · connectorbay.com/ar-monotributo/support