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Find GST Holder Phone Number for Casual and Non-Resident Registrations
Find GST holder phone number for casual and non-resident taxable persons who register for a short period, such as exhibitors, fair traders and overseas sellers.
GST Identification Number
27ABCDE1234F1Z0
- Legal nameSample Traders Pvt Ltd
- StateMaharashtra (27)
- RegistrationActive
- Phone+91 98XXX XXXXX
- Emailc****@example.com
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Reading time 4 min
Last reviewed October 2026
Find GST holder phone number searches usually assume a business with a permanent shop or office. Some GSTINs belong to holders who are only in a state for a short time. A trader from another state who sells at a trade fair, a handicraft seller at a seasonal exhibition, or a foreign company supplying goods at an event in India may take a temporary registration that lasts for the period of the business and then lapses. Contacting such a holder after the event takes a different approach, because the address on record may be a stall that no longer exists.
This guide explains what casual and non-resident registrations are, how to recognise them, and how to find a working phone number for the holder once the event is over.
Quick answer
- Casual taxable persons register temporarily in a state where they have no fixed place of business.
- Non-resident taxable persons are foreign suppliers with no fixed place of business in India.
- Both registrations are time-limited and tied to a specific period of business.
- The address on record may be an exhibition venue, not an office.
- Event organisers, the holder’s home registration or the Indian signatory are the best routes.
What a Casual Registration Is
A casual taxable person makes occasional taxable supplies in a state or union territory where they do not have a fixed place of business. Typical examples are exhibitors at trade fairs, sellers at seasonal melas and contractors doing a short job in another state. They apply for registration before starting, deposit tax in advance based on estimated turnover, and the registration is valid for a limited period, usually up to ninety days, which can be extended.
Many casual registrants have a regular GST registration in their home state under the same PAN. That home registration is the key to reaching them later.
What a Non-Resident Registration Is
A non-resident taxable person is someone outside India who occasionally makes taxable supplies in India, for example a foreign manufacturer selling at an Indian exhibition. They must apply through an authorised signatory who is resident in India and holds a valid PAN, and the registration is likewise limited to a set period with an advance deposit.
The Indian authorised signatory, often a customs or tax agent, is therefore a natural point of contact.
Recognising a Temporary Registration
The public search shows the taxpayer type and the period of validity. A casual or non-resident type, a short validity window and an address at an exhibition ground or hotel are strong clues. If the status already shows the registration as expired or cancelled at the end of its period, that is normal for these holders and not a sign of fraud.
Need the contact behind a GSTIN?Get the sample format with verified business contact fields.
Using the Home Registration
For a casual taxable person, the ten characters after the state code in the GSTIN are the PAN. Search the PAN in the public search to list all registrations under it. The regular registration in the home state will show the business’s permanent address and trade name, and that business will have a public footprint you can search for a phone number in the usual way.
Event Organisers
If you met the holder at a fair or exhibition, the organiser’s exhibitor list is valuable. It usually shows the company name, stall number, city, and often a phone and email that the exhibitor supplied. Organisers may also forward a message to an exhibitor on request.
The Indian Representative of a Foreign Supplier
For a non-resident taxable person, ask the event organiser or your own contacts for the Indian agent who handled their registration. The agent will not hand over private numbers, but can pass on your message or confirm the supplier’s official contact. Overseas companies usually have websites with international numbers and email; match the company name with the legal name on the GST record.
Want to see real match quality?See the sample format for your own GST numbers.
Invoices and Credit After the Event
If you bought from a temporary registrant, keep the tax invoice: their GSTIN for that period is valid even after it lapses, provided they filed returns. If an invoice does not appear in your credit statement, contact the holder through their home business or agent promptly, since these registrations are closed soon after the event.
Recording the Contact Properly
Save the temporary GSTIN together with the home GSTIN or overseas company details, the event name and date, and the phone number you confirmed. Without the link to the permanent business, the record becomes useless the moment the temporary registration lapses.
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Related guides
Frequently Asked Questions
How do I find GST holder phone number for a fair or exhibition seller?
Check whether the GSTIN is a casual registration, search the PAN inside it for the seller’s home-state registration, and use the organiser’s exhibitor list for phone and email.
What is a casual taxable person?
A business that makes occasional supplies in a state where it has no fixed place of business, registered for a limited period.
What is a non-resident taxable person?
An overseas supplier making occasional taxable supplies in India, registered through a resident authorised signatory.
Is an expired temporary registration a red flag?
No. These registrations are meant to lapse after the period of business.
Are invoices from a lapsed registration valid?
Yes, if they were issued during the validity period and the holder filed returns.
How do I reach a foreign exhibitor afterwards?
Use the company’s own website and email, or ask the organiser or the Indian agent to pass on your message.
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Disclaimer: GST To Phone Number is an independent data service. We are not affiliated with, endorsed by or connected to the Goods and Services Tax Network, the Central Board of Indirect Taxes and Customs, or any government department. GSTIN verification should always be confirmed against the official GST portal. Contact data is provided for legitimate business use and must be used in line with applicable telecom, privacy and data-protection rules.