# Request back-filings

> POST /filings/backFilingRequest

Source: https://docs.trykintsugi.com/reference/2026-07-21/request-back-filings

POST /filings/backFilingRequest

Request back-filings

Create unapproved BACK_FILING rows for the requested registrations and periods. Send an `Organization-Id`, `Connection-Id` or `Entity-Id` selector to say which organization to create them in; the periods must be within the eligible options from `GET /filings/backFilingRequest/options`. Returns 404 when back-filing is not available for the organization or a registration is not visible, 400 when a requested period is invalid or out of bounds, 403 PLAN_UPGRADE_REQUIRED when the organization is on a free plan, and 403 FORBIDDEN when the organization's plan does not include managed filings.

Category: Filings

Request body:
requests (BackFilingRequestRegistrationInput[], required) - The registrations and periods to request back-filings for.
  registrationId (string, required) - The registration to back-file under.
  periods (BackFilingRequestPeriodInput[], required) - The periods to back-file, each within the eligible options.
    startDate (string, required) - First day of the period, as YYYY-MM-DD.
    endDate (string, required) - Last day of the period, as YYYY-MM-DD.
notes (string) - Optional note recorded on each created filing.

Response fields:
created (Filing[], required) - The BACK_FILING filings created by this request, unapproved.
  id (string, required) - Kintsugi's unique identifier for the filing.
  organizationId (string, required) - Organization the filing belongs to.
  organizationName (string) - Display name of the organization the filing belongs to. `null` when the organization has no name set.
  registrationId (string) - The registration this filing period is filed under, if any.
  status (PublicFilingStatusEnum, required) - Lifecycle status of the filing.
    allowed values: UNFILED, FILED, FILING, PAUSED, SKIPPED, CANCELLED, ISSUE
  filingCategory (string, required) - The kind of filing period: REGULAR, AMENDMENT or BACK_FILING (a legacy PREPAYMENT value may appear on historical rows).
  taxType (PublicTaxTypeEnum, required) - Which taxes this filing covers, from the associated registration.
    allowed values: SALES_TAX, USE_TAX, SALES_AND_USE_TAX, RETAIL_DELIVERY_FEE
  countryCode (string, required) - ISO 3166-1 alpha-2 country code of the filing jurisdiction.
  stateCode (string) - State or province code, or '' for a country-level filing.
[truncated, see the reference page]

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Index of every page: https://docs.trykintsugi.com/llms.txt