To submit your tax returns under Making Tax Digital, you need to authorise access with HM Revenue & Customs (HMRC) using your National Insurance Number and Government Gateway login details.
Step 1: Enter Your National Insurance Number (NINO)
On the Set up Making Tax Digital screen:
Make sure you’re on Step 1 – Authorise with HMRC
Enter your National Insurance Number (NINO) in the field provided
Example format:
QQ123456B
Click Authorise now
This starts the secure connection process with HMRC.
Step 2: Sign in to HMRC (Government Gateway)
After clicking Authorise now, you’ll be redirected to HMRC’s secure login page.
You will need to:
Enter your Government Gateway User ID
Enter your Password
Complete any 2-step verification if prompted (SMS or authenticator app)
You are logging in directly with HMRC. Your credentials are not stored by us.
Step 3: Grant Authority
HMRC will ask you to confirm that you want to:
Allow the software to view relevant tax information
Submit updates under Making Tax Digital for Income Tax
Click Grant authority (or similar wording) to approve the connection.
Step 4: Confirmation
Once authorised:
You’ll be redirected back to the app
Step 1 will show as completed
Your account is now connected and ready for Making Tax Digital submissions. Nexus will start to retrieve your tax obligation statuses from hereon.