tin verification
This query is : Resolved
C.A Alok Mukherjee
(Querist)
17 November 2009
Can anybody tell me the tin website if we want to check the cst registration no throgh net.
18 November 2009
Following website can help you,
"https://www.tinxsys.com/TinxsysInternetWeb/searchByCst_Inter.jsp"
www.tinxsys.com
"https://www.tinxsys.com/TinxsysInternetWeb/searchByCst_Inter.jsp"
www.tinxsys.com
C.A Alok Mukherjee
(Querist)
18 November 2009
Dear Chnadra,
I have tried both. getting troubles i am finding the tin input screen is inactive.
I have tried both. getting troubles i am finding the tin input screen is inactive.
02 August 2025
It looks like the site [www.tinxsys.com](https://www.tinxsys.com) you mentioned used to be the go-to for verifying TIN/CST numbers online, but sometimes these government or related portals face downtime or technical issues, which might be why the input screen is inactive for you.
### Here are some updated tips for TIN verification:
1. **Check State Commercial Tax Department Website**
Many states now provide online TIN verification on their official VAT or Commercial Tax websites.
Example:
* Maharashtra: [https://mahavat.gov.in](https://mahavat.gov.in)
* Karnataka: [https://ctax.kar.nic.in](https://ctax.kar.nic.in)
* Tamil Nadu: [https://www.tn.gov.in/tax](https://www.tn.gov.in/tax)
You can search by dealer name or TIN there.
2. **Use GST Portal (If GST Registered)**
Since GST has largely replaced VAT/CST, if the dealer is registered under GST, you can verify their GSTIN (which replaced TIN for interstate trade) on the GST portal:
[https://www.gst.gov.in/](https://www.gst.gov.in/)
Use the “Search Taxpayer” option to verify.
3. **Alternative websites/tools**
Some private portals attempt to maintain TIN/CST databases but be cautious of accuracy. Prefer official state portals.
4. **Offline Verification**
If online systems are down, you can request the dealer to provide a **copy of their VAT/CST registration certificate** or confirmation from the respective VAT department.
---
### Here are some updated tips for TIN verification:
1. **Check State Commercial Tax Department Website**
Many states now provide online TIN verification on their official VAT or Commercial Tax websites.
Example:
* Maharashtra: [https://mahavat.gov.in](https://mahavat.gov.in)
* Karnataka: [https://ctax.kar.nic.in](https://ctax.kar.nic.in)
* Tamil Nadu: [https://www.tn.gov.in/tax](https://www.tn.gov.in/tax)
You can search by dealer name or TIN there.
2. **Use GST Portal (If GST Registered)**
Since GST has largely replaced VAT/CST, if the dealer is registered under GST, you can verify their GSTIN (which replaced TIN for interstate trade) on the GST portal:
[https://www.gst.gov.in/](https://www.gst.gov.in/)
Use the “Search Taxpayer” option to verify.
3. **Alternative websites/tools**
Some private portals attempt to maintain TIN/CST databases but be cautious of accuracy. Prefer official state portals.
4. **Offline Verification**
If online systems are down, you can request the dealer to provide a **copy of their VAT/CST registration certificate** or confirmation from the respective VAT department.
---
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