If you sell goods or services at a trade fair, exhibition, pop-up store, or seasonal stall in a state where your business isn't normally based, GST law has a specific category for you: the casual taxable person. Many sellers assume that small or short-term sales don't need GST registration — but that assumption can lead to penalties. This guide explains exactly who qualifies as a casual taxable person in GST, how registration works, and what compliance a CTP must follow.
A casual taxable person is any individual or business that supplies goods or services occasionally in a state or territory where they do not have a fixed place of business. The GST law defines this person as someone who undertakes transactions involving the supply of goods or services in the course of business, whether acting as a principal, an agent, or in any other capacity, in a state or union territory where they have no fixed place of business.
In simple terms: if your registered business address is in one state, but you set up a temporary stall, counter, or booth in another state to make sales, you become a casual taxable person for that location, regardless of how small the sale is.
In every one of these cases, the seller has no fixed place of business in the state where the sale is happening — which is exactly what triggers the casual taxable person classification.
Unlike regular taxpayers, who only need GST registration once their turnover crosses ₹40 lakh for goods or ₹20 lakh for services, a casual taxable person must register for GST regardless of turnover. There is no minimum exemption. Even a single rupee of taxable supply made from a stall outside your home state triggers compulsory registration under Section 24 of the CGST Act.
A CTP cannot opt into the GST composition levy. The composition scheme, which allows small regular taxpayers to pay tax at a lower flat rate, is simply not available to casual taxable persons — they must pay GST under the regular scheme.
Registration for a casual taxable person is temporary. It is valid for the period specified in the registration application, or 90 days from the date of registration, whichever is earlier. If the business activity continues beyond this period, the registration can be extended by another 90 days through an application before the original validity expires.
If a temporary event or exhibition runs for more than 180 days in total, the person can no longer be treated as a casual taxable person and must instead obtain a regular, permanent GST registration in that state.
A casual taxable person must apply for GST registration at least 5 days prior to commencing business. This is a strict requirement — registration cannot be done on the day the stall opens.
There is no separate form for a casual taxable person. The standard GST Portal form, FORM GST REG-01, is used. Part A of the form generates a Temporary Reference Number (TRN), after which Part B is completed with business and event-specific details such as the exhibition contract, stall booking receipt, and authorization letter.
Before the registration certificate is issued, a casual taxable person must pay an advance tax deposit equal to the estimated tax liability for the registration period. For example, if expected taxable sales are ₹1,00,000 and the applicable GST rate is 18%, the advance deposit required would be ₹18,000. This deposit is credited to the applicant's electronic cash ledger.
Once the deposit is made and the application is verified, the GST portal issues a registration certificate with a defined validity period. Trading can only begin after this certificate is issued — not before.
Registration is only the first step. A casual taxable person also has ongoing compliance obligations for as long as the registration remains active.
A CTP is required to file standard returns like GSTR-1 and GSTR-3B for the duration of the registration. Unlike regular taxpayers, casual taxable persons are not required to file an annual return (GSTR-9) — the temporary, event-based nature of their registration exempts them from this.
A casual taxable person is allowed to claim input tax credit on inward supplies, including inputs, capital goods, and input services used for making taxable supplies. This is one practical advantage over a non-resident taxable person, who faces tighter restrictions on ITC claims.
If business activity is likely to continue past the original validity period, the casual taxable person can apply for an extension using FORM GST REG-11, before the existing registration expires. The extension is capped at an additional 90 days and requires an additional advance tax deposit covering the extended period. The validity of a CTP registration can be extended only once.
Any excess, unutilized balance left in the electronic cash ledger after all dues are settled can be claimed as a refund — but only after all applicable returns have been filed for the entire registration period. This makes accurate estimation of tax liability important; overestimating leads to funds being locked up until the refund process is complete, while underestimating means paying the shortfall later through the cash ledger.
It helps to understand how a CTP differs from other GST categories:
There is one notable exception. A casual taxable person engaged in making inter-state supplies of specified handicraft goods, made largely by hand, is exempt from compulsory CTP registration, provided the total value of such supplies stays within the general turnover threshold for that state. This exemption was introduced specifically to support artisans and craftspeople who travel between states for exhibitions and fairs, and it requires the seller to hold a valid PAN and generate e-way bills where applicable.
Who needs to register as a casual taxable person under GST?
Anyone supplying goods or services occasionally in a state where they have no fixed place of business — such as exhibitors, pop-up stall owners, and seasonal vendors — must register as a casual taxable person, regardless of turnover.
What is the validity of a casual taxable person's GST registration?
The registration is valid for the period mentioned in the application, or 90 days from the date of registration, whichever is earlier. It can be extended once, by up to an additional 90 days.
Can a casual taxable person opt for the composition scheme?
No. A CTP cannot opt into the composition levy and must pay GST under the regular tax scheme.
Does a casual taxable person need to file an annual GST return?
No. Unlike regular taxpayers, a casual taxable person is not required to file GSTR-9, since the registration itself is temporary and event-based.
How much advance tax deposit does a CTP need to pay?
The advance deposit must equal the estimated tax liability for the entire registration period, based on expected taxable supplies and the applicable GST rate.
Can a casual taxable person claim input tax credit?
Yes, a CTP can claim ITC on inputs, capital goods, and input services used to make taxable supplies, unlike a non-resident taxable person, who faces tighter ITC restrictions.
The casual taxable person category exists specifically for businesses that operate beyond their home state on a short-term, event-driven basis. Because there is no turnover exemption, mandatory registration at least 5 days before the event, accurate advance tax estimation, and timely return filing are non-negotiable parts of staying compliant. If you're planning to participate in an exhibition, trade fair, or seasonal pop-up outside your registered state, sorting out your CTP registration early avoids last-minute compliance issues and keeps your stall legally ready to trade from day one.
Disclaimer: GST rules and procedures are subject to change through official government notifications. Please verify the latest requirements on the GST portal (gst.gov.in) or consult a tax professional before applying for registration.
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