Tax Submission to HMRC
Step 1 of 4: HMRC Authorization
HMRC AuthorizationComplete Profile & SetupReview & SubmitSubmission Status
HMRC Authorization
Before we can submit your tax information, you need to authorize this application with HMRC.
Test Environment Setup
Create a test user for HMRC sandbox testing. Required for testing submissions.
HMRC Developer Credentials Required: To create test users, your HMRC Client ID and Client Secret must be configured in Supabase Edge Function secrets.Register your application on the HMRC Developer Hub.
Important: You must use a test NINO to submit data in the HMRC sandbox environment. Your real NINO will not work for testing.
Authorization Status
Not Connected
Click "Connect to HMRC" to authorize this application
Why Authorization is Required
HMRC authorization allows us to securely submit your self-employment information on your behalf.
Secure & Official
Direct connection to HMRC's official API ensures your data is transmitted securely.
Automated Submission
Your self-employment data will be submitted directly to your Self Assessment.
Your Control
You can revoke access at any time through your HMRC online account settings.
Your privacy is protected: We only access the minimum permissions required to submit your self-employment information. We cannot view your personal tax records or make changes to other parts of your tax return.