Here are some practical ways on how to find service tax number by company name;
Through Old Documents / Certificates
Check earlier Service Tax Registration Certificates issued before GST.
Look at past service tax returns (ST-3) filed by the company.
Old invoices or tax documents usually list the Service Tax Registration Number.
The Service Tax regime has been subsumed into GST since July 1, 2017, and the original Service Tax Registration Number (also known as Service Tax Code, STC or Assessee Code) is no longer actively used for new filings. Under the old tax regime, a Service Tax Number typically included:
The company’s PAN
A suffix like SD / ST
A 3-digit registration sequence (e.g., 001).
Example: ABCDR1234FSD001: where the last three digits indicate the number of registrations under that PAN. This number was used for service tax filings and compliance before GST replaced the system.
The Central Board of Indirect Taxes and Customs (CBIC) and the GST portal do not currently provide a direct “search by company name” option specifically for old Service Tax numbers online. The GST portal’s taxpayer search functions primarily relate to GSTIN (GST Identification Number) rather than Service Tax Numbers.
Because Service Tax records are historic and merged into GST data, the GST portal does not officially support finding Service Tax numbers by company name.
Since tax numbers are sensitive but necessary for compliance or record-keeping, the simplest way is to request the old Service Tax number directly from the company’s finance or compliance team.
A chartered accountant (CA), tax consultant, or legal expert with access to archived CBIC systems can often retrieve historical Service Tax numbers using the company’s PAN or related details.
For current transactions and compliance, Service Tax has been entirely replaced by GST and GSTIN so if you are dealing with recent tax obligations, you must look up the GST number instead.
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How to Find Service Tax Number by Company Name?
Preeti4
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2026-01-23T09:33:03+00:00 2026-01-23T09:33:07+00:00Comment
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