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Peru SUNAT Monthly Due Dates

Due dates of the twelve 2026 monthly tax periods by last digit of the RUC, as printed in SUNAT's Cronograma de Obligaciones Mensuales

Unify Dynamics LLC

Documentation
Tools5read-only
Sign-inNoneno account, no key
Data keptNoneprocessed in memory
PriceFreeoptional Pro limits
StatusLiveMCP + REST
Works withMCP · RESTany agent

Try asking

Real questions, and the tools your agent calls to answer them.

When is the Sep-2026 monthly return due for a RUC ending in 4?
Tools called
due_date
What is my next SUNAT monthly due date after 2 October 2026 for a RUC ending in 7?
Tools called
next_due
Show all twelve 2026 periods for a RUC ending in 0
Tools called
year_table
How are RUC digits grouped and what is the special column?
Tools called
digit_groups
What does the SUNAT monthly table cover and what is its legal basis?
Tools called
scope_and_basis

About

Returns the due date of each 2026 monthly tax period (Ene-2026 to Dic-2026) for the last digit of a RUC or for the Buenos Contribuyentes / UESP column, as SUNAT prints them in its Cronograma de Obligaciones Mensuales (the table includes the Impuesto a las Transacciones Financieras payment), and the next date on or after a day the caller names. Dates only: no amounts, no filing. The page models no holiday or weekend rule and prints no last-updated date; it is one publisher read twice, so every answer carries the single-source caveat. A full RUC is refused: only the last digit is taken.

Sources: Reference data from official sources (sunat.gob.pe); every answer states its source, date and validity period.

Privacy

The publisher, Unify Dynamics LLC, states that tool inputs are processed in memory and not retained.

Data not collectedNo account, no profile, no stored prompts or results.
Privacy policyTerms

What it can do

5 tools, grouped by job. Every one is read-only or compute-only.

OpenAPI
Reference & guides5 tools
  • Due dateDue date of one 2026 monthly period for a RUC last digit or the special column.
  • Next dueNext due date on or after a day for a RUC last digit, with its period.
  • Year tableAll twelve 2026 periods with their due dates for one RUC last digit.
  • Digit groupsHow RUC digits are grouped in the table and what the special column is.
  • Scope and basisWhat the table covers, its legal basis and what it does not model.

Information

PublisherUnify Dynamics LLC
CategoryMoney & business · Government
LanguagesEnglish
Built forPeru
CompatibilityAny MCP client · any agent · REST
Version0.1.0
MCP endpointhttps://pe-sunat-calendar.connectorbay.com/mcp
REST APIopenapi.json
SupportGet help · Status
CountryPeru
FunctionsInvoicing & tax, Compliance & risk
LayerDeep connectors

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Documentation

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Peru SUNAT Monthly Due Dates — connector documentation

  • MCP endpoint: https://pe-sunat-calendar.connectorbay.com/mcp
  • REST API: POST https://pe-sunat-calendar.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://pe-sunat-calendar.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://pe-sunat-calendar.connectorbay.com/health · Tool schemas: https://pe-sunat-calendar.connectorbay.com/tools.json
  • Publisher: Unify Dynamics LLC · connectorbay.com/pe-sunat-calendar · agent@connectorbay.com

What Peru SUNAT Monthly Due Dates is for

Returns the due date of each 2026 monthly tax period (Ene-2026 to Dic-2026) for the last digit of a RUC or for the Buenos Contribuyentes / UESP column, as SUNAT prints them in its Cronograma de Obligaciones Mensuales (the table includes the Impuesto a las Transacciones Financieras payment), and the next date on or after a day the caller names. Dates only: no amounts, no filing. The page models no holiday or weekend rule and prints no last-updated date; it is one publisher read twice, so every answer carries the single-source caveat. A full RUC is refused: only the last digit is taken.

Ask your assistant things like:

  • "When is the Sep-2026 monthly return due for a RUC ending in 4?"
  • "What is my next SUNAT monthly due date after 2 October 2026 for a RUC ending in 7?"
  • "Show all twelve 2026 periods for a RUC ending in 0"
  • "How are RUC digits grouped and what is the special column?"
  • "What does the SUNAT monthly table cover and what is its legal basis?"

What it does

  • due_date: Due date of one 2026 monthly period for a RUC last digit or the special column.
  • next_due: Next due date on or after a day for a RUC last digit, with its period.
  • year_table: All twelve 2026 periods with their due dates for one RUC last digit.
  • digit_groups: How RUC digits are grouped in the table and what the special column is.
  • scope_and_basis: What the table covers, its legal basis and what it does not model.

Data sources

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

What it is not

Peru SUNAT Monthly Due Dates 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. Peru SUNAT Monthly Due Dates 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: Peru. Languages: English.

Tools

Reference & guides

due_date — Due date of one 2026 monthly period for a RUC last digit or the special column. Use for "When is the Sep-2026 monthly return due for a RUC ending in 4". Args: period, ruc_last_digit.

next_due — Next due date on or after a day for a RUC last digit, with its period. Use for "What is my next SUNAT monthly due date after 2 October 2026 for a RUC ending in 7". Args: ruc_last_digit, on_date.

year_table — All twelve 2026 periods with their due dates for one RUC last digit. Use for "Show all twelve 2026 periods for a RUC ending in 0". Args: ruc_last_digit.

digit_groups — How RUC digits are grouped in the table and what the special column is. Use for "How are RUC digits grouped".

scope_and_basis — What the table covers, its legal basis and what it does not model. Use for "What does the SUNAT monthly table cover".

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/pe-sunat-calendar/support

Privacy policy

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Peru SUNAT Monthly Due Dates — Privacy Policy

Effective 29 September 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What Peru SUNAT Monthly Due Dates is. Peru SUNAT Monthly Due Dates is a connector (an MCP server and REST API) that AI assistants call on your behalf: Due dates of the twelve 2026 monthly tax periods by last digit of the RUC, as printed in SUNAT's Cronograma de Obligaciones Mensuales. You talk to your assistant; the assistant sends us only the arguments needed for that one request.

What we receive. The arguments of each tool call, the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant, and a Pro API key if you have one), and standard server logs.

Nothing is stored. Every tool is a local calculation or a lookup against bundled reference data; no request is forwarded to any third party. Arguments are used for that one response and are not logged in request bodies, recorded, or used to train anything.

What we do not receive or store. We do not receive your conversation with the assistant, your name, contacts or account credentials, and we build no profile: each request is answered independently. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting access logs (IP addresses and request paths, not request bodies) are kept for up to 30 days for security and abuse prevention.

Sub-processors. None. Hosting: Vercel (United States regions).

Your rights. Because we store no personal data beyond short-lived logs, requests to access, correct or delete data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. We do not sell or share personal information.

Children. Peru SUNAT Monthly Due Dates is a general-audience service operated by the adult using the assistant.

Changes. We will post changes here with a new effective date.

Terms of service

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Peru SUNAT Monthly Due Dates — Terms of Service

Effective 29 September 2026. These terms govern use of the Peru SUNAT Monthly Due Dates connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

  1. The Service. Peru SUNAT Monthly Due Dates provides: Due dates of the twelve 2026 monthly tax periods by last digit of the RUC, as printed in SUNAT's Cronograma de Obligaciones Mensuales. It is accessed through an AI assistant or directly over MCP or HTTP, and is read-only.
  2. General information, not professional advice. Output is general information and a drafting aid. It is not legal, tax, accounting, financial or payment advice, and it is not a filing or a payment instruction. General information only, not legal, tax, accounting or payment advice. Peru SUNAT Monthly Due Dates 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.
  3. Independent. Peru SUNAT Monthly Due Dates is independent; not affiliated with, endorsed by or operated by any government body, central bank, standards body or scheme operator. Official names are used only to describe what a tool works with.
  4. Sources and dates. Reference values state their source, date and validity period. Rules change: check the cited official source before you rely on a result.
  5. Acceptable use. Automated use within the published rate limits is welcome. Do not use the Service to look up private individuals or to circumvent any authority's controls.
  6. Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time.
  7. Data. Our Privacy Policy describes what we process. In short: your input is answered on our server and nothing is stored.
  8. Pro keys. Optional Pro API keys are issued at our discretion, are personal to the holder and may be revoked for abuse.
  9. Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss arising from use of or reliance on the Service. Our total liability is limited to US $100.
  10. Governing law. California law; venue in San Mateo County, California.
  11. Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/pe-sunat-calendar

Support

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Peru SUNAT Monthly Due Dates support

Email agent@connectorbay.com. We answer within two business days.

When you report a problem, include the question you asked your agent, roughly when, and which agent you used (for example Claude, ChatGPT or Gemini). Never send us passwords, account numbers or ID numbers. Peru SUNAT Monthly Due Dates never asks for them.

Get Peru SUNAT Monthly Due Dates

Free · No sign-in · Read-only

Streamable HTTP, stateless, no authentication. Paste the endpoint into any MCP-capable agent.

https://pe-sunat-calendar.connectorbay.com/mcp
{
  "mcpServers": {
    "pe-sunat-calendar": {
      "type": "http",
      "url": "https://pe-sunat-calendar.connectorbay.com/mcp"
    }
  }
}