openapi: 3.1.0
info:
  title: Avalara 1099 & W-9 1099 Forms Filing API
  description: The Avalara 1099 and W-9 API automates collection, validation, and e-filing of IRS forms including 1099 variants (1099-NEC, 1099-MISC, 1099-K, 1099-INT, 1099-DIV), 1095 forms, W-2, and 1042-S. It provides endpoints for creating, updating, managing, and filing various IRS information returns.
  version: '1.0'
  contact:
    name: Avalara Developer Relations
    url: https://developer.avalara.com/
    email: developer.relations@avalara.com
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
  termsOfService: https://legal.avalara.com/#siteterms
servers:
- url: https://api.avalara.com/1099/v1
  description: 1099 API Production
- url: https://api.sbx.avalara.com/1099/v1
  description: 1099 API Sandbox
security:
- bearerAuth: []
tags:
- name: Filing
  description: E-file forms with the IRS
paths:
  /filing/submit:
    post:
      operationId: submitFiling
      summary: Avalara Submit Forms for E-filing
      description: Submits a batch of completed forms to the IRS for electronic filing. Validates all forms before submission.
      tags:
      - Filing
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/FilingSubmission'
      responses:
        '202':
          description: Filing submission accepted
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FilingResponse'
  /filing/{filingId}/status:
    get:
      operationId: getFilingStatus
      summary: Avalara Get Filing Status
      description: Retrieves the status of an IRS e-filing submission.
      tags:
      - Filing
      parameters:
      - name: filingId
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Filing status
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FilingStatus'
components:
  schemas:
    FilingSubmission:
      type: object
      required:
      - taxYear
      - formIds
      properties:
        taxYear:
          type: integer
        formIds:
          type: array
          items:
            type: string
        corrected:
          type: boolean
          default: false
    FilingStatus:
      type: object
      properties:
        filingId:
          type: string
        status:
          type: string
          enum:
          - Processing
          - Accepted
          - AcceptedWithErrors
          - Rejected
        acceptedCount:
          type: integer
        rejectedCount:
          type: integer
        errors:
          type: array
          items:
            type: object
            properties:
              formId:
                type: string
              errorCode:
                type: string
              message:
                type: string
    FilingResponse:
      type: object
      properties:
        filingId:
          type: string
        status:
          type: string
          enum:
          - Accepted
          - Processing
          - Rejected
        formCount:
          type: integer
        submittedDate:
          type: string
          format: date-time
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: OAuth 2.0 bearer token
externalDocs:
  description: 1099 & W-9 API Documentation
  url: https://developer.avalara.com/api-reference/avalara1099/avalara1099/