Turn the DGII Oficina Virtual into an API

What you can build on the Oficina Virtual

• Get pending taxes

  Build this

  Reads Deudas pendientes under Consultas: the summary of taxes your RNC has not yet paid.

  Takes

  Nothing

  Returns

  Tax, form, period, amount owed, total

• List filed returns

  Build this

  Reads Declaraciones under Consultas: the returns presented since your obligations began, filtered to the tax and periods you ask for.

  Takes

  Tax (optional), from period, to period

  Returns

  Form, tax, period, filing date, amount

• Check request statuses

  Build this

  Reads Estatus de Solicitudes under Consultas: the requests you made in the Oficina Virtual, at local offices or at head office.

  Takes

  Submitted since (optional)

  Returns

  Request number, request type, date, status

• Request a compliance certificate

  Build this

  Opens Solicitar certificaciones and requests the Cumplimiento de Obligaciones Fiscales certificate (tax compliance certificate) for your RNC.

  Takes

  Purpose or addressee (optional)

  Returns

  Request number, certificate type, submitted date, status

Automate the Oficina Virtual with a workflow

A workflow runs your methods as one process, with nobody at the screen. A schedule or a call from your own system starts it, the steps run in order, and the result arrives in your inbox or in the systems you already use.

• New items in Deudas pendientes, every Monday

  Build this

  Starts

  Every Monday at 8:00, Santo Domingo time

  Step 1

  Get the pending taxes from Deudas pendientes.

  Step 2

  Keep the items that were not there on the last run.

  Step 3

  Email you each new item with its tax, form, period and amount owed.

• Changes in Estatus de Solicitudes, posted to your system

  Build this

  Starts

  Every weekday at 9:00, Santo Domingo time

  Step 1

  Check Estatus de Solicitudes for requests submitted in the last 90 days.

  Step 2

  Keep the requests whose status changed since the last run.

  Step 3

  Post request number, type, date and status to your webhook.

• Last month's Declaraciones, handed to accounting

  Build this

  Starts

  On the 1st of every month at 8:00, Santo Domingo time

  Step 1

  List the returns in Declaraciones for the last three periods.

  Step 2

  Keep the returns with a filing date in the previous month, and stop when there are none.

  Step 3

  Post form, tax, period, filing date and amount to your accounting system's webhook.

You can run a workflow by hand on every plan, Free included. Schedules and webhook triggers come with the paid plans, from $29 a month.

Once built, one call from your code

Once you have built a method, it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “Get pending taxes” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "dgii.gov.do/get_pending_taxes",
    "input": {}
  }'

{
  "status": "completed",
  "data": {
    "pending": [
      {
        "tax": "ITBIS",
        "form": "IT-1",
        "period": "2026-09",
        "amount_owed": 53606
      },
      {
        "tax": "Retenciones asalariados",
        "form": "IR-3",
        "period": "2026-10",
        "amount_owed": 12400
      }
    ],
    "currency": "DOP",
    "total": 66006
  }
}

An example with invented data, not a ready-made endpoint. The method exists in your organization once you build it, and its name, inputs and fields follow your request.

The Oficina Virtual’s own options

DGII publishes REST web services for electronic fiscal receipts (e-CF) only: sending e-CF, checking their result and status, voiding e-NCF and similar. They need a digital certificate and are used by taxpayers certified as electronic issuers. Your tax account, returns and formatos de envío are handled in the Oficina Virtual, which DGII offers free.

Read on November 12, 2026: Documentación sobre e-CF, Servicios de la Oficina Virtual (cartilla), Herramientas de Pre-validación.

Signing in to the Oficina Virtual

The Oficina Virtual asks for your RNC or Cédula as Usuario and your Clave, then a code from your security device: a Tarjeta de Códigos, a Token (Grandes Contribuyentes only) or the Token Digital in the DGII Móvil app. With Fous you sign in through the Oficina Virtual's own sign-in with your own account. The login is sealed with AES-256 and never returned by the API or written to logs.

Worth knowing

One account per RNC

The Usuario is the taxpayer's RNC or Cédula, so each company you file for signs in with its own Usuario and Clave.

One security device at a time

Adding a Token Digital disables any Tarjeta de Códigos or Token already linked to the account. After a password change, an account with no device must activate a Token Digital.

Your 606 can be read back

Gastos NCF and Consulta Envíos 606 under Consultas show the expenses reported through the 606, so a method you build can check what DGII has on file against your own books.

e-CF starts in a test environment

The e-CF services run in Pre-Certificación, where sends are kept 60 days, then Certificación, then Producción, where every send has fiscal validity.

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