HMRC connections enable you to submit SA100 returns/ MTD submissions and pull employment data directly from HMRC. There are two types of connections: Agent Services and Online Services.
Agent Services
Used for MTD (Making Tax Digital) submissions
Set up by Primary Admin only
Applies to all firm users once connected
Enables pulling employment data directly from HMRC
Online Services
Used for SA100 submissions
Each user must set up their own credentials
Controls who in your firm can submit SA100 returns
Required before you can submit an SA100
Location: Profile & Settings → HMRC Connection → Agent Services
What you need:
HMRC Government Gateway account credentials
Agent reference number (from HMRC)
To set up:
Select "Connect to Agent Services"
Follow the onscreen instructions
Enter your HMRC credentials
Authenticate with HMRC
Once connected, all firm users can use Agent Services features without needing individual credentials.
Location: Profile & Settings → HMRC Connection → Online Services
What you need:
Your HMRC Government Gateway password
To set up:
Select "Connect to Online Services"
Follow the onscreen instructions
Enter your HMRC Government Gateway password
Authenticate with HMRC
Each user who submits SA100 returns must complete this setup. This includes the Primary Admin.
When you submit an SA100 return, you'll use your Online Services connection:
Go to SA100 Submission
Select "Submit to HMRC"
Enter your HMRC Government Gateway password
Return is submitted
If you haven't set up Online Services credentials, the Submit button will be greyed out.
When setting up client employment information, you can pull employment data directly from HMRC using the Agent Services connection (already set up by your Primary Admin):
No additional setup needed
Employment history and P60 data populate automatically
Reduces manual data entry
Cause: You haven't set up Online Services credentials
Resolution:
Go to Profile & Settings → HMRC Connection
Select "Connect to Online Services"
Enter your HMRC Government Gateway password and authenticate
Return to SA100 Submission; button should now be active
Cause: Incorrect credentials or expired connection
Resolution:
Go to Profile & Settings → HMRC Connection
Try re-authenticating
Ensure you're using the correct HMRC Government Gateway password
If credentials have changed in HMRC, update them there first, then reconnect in ApariPro
Two separate connections serve different purposes — Agent Services for MTD and data pull; Online Services for SA100 submission
Agent Services is firm-wide — Set up once by Primary Admin; all users benefit
Online Services is individual — Each user who submits enters their own credentials
Individual credentials = firm control — You decide who can submit SA100 returns by who has Online Services set up
Both enable key features — Data pull and submission both depend on having the right connections