An Application Service Provider (ASP) is the software provider you deal with, and a GST Suvidha Provider (GSP) is the approved gateway that connects that software to the GST System. The ASP prepares your invoices and returns in the right format. The GSP sends that data to the GST portal through government APIs and brings back the response. Neither can file your returns from your books without the other.
What is a GSP in GST?
A GSP is a company approved by the Goods and Services Tax Network (GSTN) to access the GST System through its APIs. Only approved GSPs get this access. They have to meet GSTN’s technical and security standards, and they work as the bridge between private software and the government’s system. A GSP rarely deals with the taxpayer’s day-to-day work. Its job is to pass data securely in both directions and handle authentication with the GST System.
What is an ASP in GST?
An ASP is a company that builds the application a taxpayer actually uses. This can be accounting software, billing software or a return-filing tool. The ASP turns your sales and purchase data into the format the GST portal accepts, checks it for errors and shows you the results. An ASP cannot reach the GST System on its own. It must connect through a GSP. Some companies act as both, and some ASPs tie up with a separate GSP.
What is the difference between an ASP and a GSP in GST?
The table puts the two roles side by side:
|
Basis |
ASP |
GSP |
|
Full form |
Application Service Provider |
GST Suvidha Provider |
|
Main role |
Builds the software taxpayers use |
Carries data between the software and the GST System |
|
GSTN approval as a GSP |
Not needed |
Needed |
|
Direct access to GST APIs |
No |
Yes |
|
Contact with the taxpayer |
Usually direct |
Usually in the background |
|
What it handles |
Invoices, returns, reconciliation and reports |
Authentication, API calls and data transfer |
|
Example |
Tally Solutions Private Limited |
Tally (India) Private Limited |
How do the ASP and GSP work together?
The easiest way to see this is to follow a GSTR-1 upload from your books:
- You record sales invoices in your accounting software.
- The software checks the data and prepares GSTR-1 in the portal’s format.
- You start an upload, and the software asks the portal for an OTP through its GSP.
- You enter the OTP sent to your registered mobile number and email.
- The GSP receives an access token from the GST System and uses it to send your data.
- The GST System processes the data and returns the status through the GSP.
- The software shows you which invoices were accepted and which need correction.
The token stays active for the duration you allowed and can be refreshed within that period. After that, a fresh OTP is needed.
What has changed for ASPs and GSPs on the GST portal?
Two recent changes give taxpayers more control over this connection:
- The GST portal now asks taxpayers to pick the exact GSP-ASP pair under My Profile > Manage API Access, along with a duration. Only the pair you authorise can request an OTP for your GSTIN. Businesses with more than one GSTIN have to do this for each registration.
- The November 2025 portal update added three links on the same screen. View Logs shows every token request from the last 30 days with the action and its status. Revoke Active Token lists live tokens and lets you end one after giving a reason. The portal then alerts you and the GSP by email and SMS. View Revoked Token keeps a 30-day record of what you revoked.
How do you choose the right ASP and GSP in GST?
Most taxpayers choose an ASP for its features, and the GSP comes with it. Look at these points before you decide:
- Check which GSP the software uses and whether both names appear on the Manage API Access screen.
- Make sure the software covers the returns you file, such as GSTR-1, GSTR-3B and reconciliation with GSTR-2B.
- Ask how the provider stores your data and who can see it.
- Confirm that it supports more than one GSTIN if you have branches in other states.
What can go wrong between an ASP and a GSP?
Most connection errors start at the authorisation step.
- API access is off, so the software cannot ask for an OTP.
- The GSP-ASP pair selected on the portal does not match the software you use.
- The duration has ended, and the token has expired.
- Someone revoked the token while an upload was running.
- The OTP goes to an old mobile number or email on the registration.
Conclusion
An ASP and a GSP in GST do different jobs, and both sit between your books and the GST portal. Know which pair holds access to your GSTIN, authorise only the pairs you use and check the access logs every month. TallyPrime users can upload, reconcile and file GST returns through Connected GST once they select Tally (India) Private Limited as GSP and Tally Solutions Private Limited as ASP for 30 days on each GSTIN.
