# Upload a payment receipt

> POST /filings/{filing_id}/paymentReceipts

Source: https://docs.trykintsugi.com/reference/2026-10-06/upload-a-payment-receipt

POST /filings/{filing_id}/paymentReceipts

Upload a payment receipt

Upload proof that you paid the tax authority for a filing, as `multipart/form-data` with the file in the `file` part. Kintsugi reviews the receipt before completing the filing. The filing's status does not change. A filing takes at most 20 receipts. Send an `Organization-Id`, `Connection-Id` or `Entity-Id` selector to say which organization the filing belongs to.

The file must be a PDF, PNG or JPEG of at most 10 MB. Returns 404 if the filing does not exist or belongs to an organization your credential cannot access, 409 if no payment instructions were sent for the filing, the filing is not waiting for payment or it already has 20 receipts, 413 if the file is too large, and 422 if it is not a PDF, PNG or JPEG.

Category: Filings

Path parameters:
filing_id (string, required) - The unique identifier of the filing.

Response fields:
id (string, required) - Attachment id of the receipt. Download it through the attachments API (`GET /attachments/{id}/download`).
fileName (string, required) - Name the file was uploaded under.
uploadedAt (string, required) - When the receipt was uploaded, as an RFC-3339 UTC timestamp.

Response statuses: 201, 400, 401, 403, 404, 409, 413, 422, 503

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