Casual Taxable Person Registration Under GST

A casual taxable person is someone who occasionally supplies goods or services in a state where they have no fixed place of business — a Delhi manufacturer selling from a stall at a Bengaluru trade fair, a Mumbai consultancy running a four-week installation in Guwahati. GST treats this as its own registration category: no turnover threshold applies, you must register before you start supplying, and you have to deposit an estimate of the tax up front before the registration is granted at all.

Who is a casual taxable person

Section 2(20) of the CGST Act defines a casual taxable person as a person who occasionally undertakes transactions involving the supply of goods or services or both in the course or furtherance of business, whether as principal, agent or in any other capacity, in a State or Union territory where he has no fixed place of business. Two conditions have to hold together, and people routinely get this wrong by reading only one of them.

• Occasional, not ongoing. The supplies are one-off or short-run. If you intend to trade from that state continuously, you are not casual — you need a normal registration in that state.
• No fixed place of business in that state. This is state-specific, not India-wide. You may be a large, long-registered business with three GSTINs elsewhere; what matters is whether you have a fixed place of business in this state. GST registration is state-wise, which is also why the first two digits of every GSTIN encode a state — see our breakdown of the GSTIN format and the state code list.

Typical fact patterns: exhibiting and selling at a trade fair, expo or trade show; a seasonal stall during a festival; a wedding or event contractor working across state lines; a short-duration erection, commissioning or repair job at a client site; a touring performer or a pop-up retail counter. What all of them share is that the activity has a beginning and an end, and no premises are being maintained in the state afterwards.

One thing a casual taxable person is not: a small or informal business. The category is about geography and duration, not size. A company with a thousand crore of turnover exhibiting at a fair in a new state is a casual taxable person for that fair.

Why the turnover threshold does not help you

Section 22 sets the general registration thresholds based on aggregate turnover. Section 24 then overrides it, listing categories of persons who must register "notwithstanding anything contained in sub-section (1) of section 22" — and casual taxable persons making taxable supply are on that list. In practice this means a single day of taxable supply at a stall in another state can trigger a registration obligation, even if your total turnover for the year is well under the normal limit and even if the fair earns you fifty thousand rupees.

It also means the usual mental model of "watch turnover, register when you cross" does not apply here. If you want a refresher on how the general threshold is computed and what goes into aggregate turnover in the first place, our guide to annual aggregate turnover covers that — but keep it separate in your head from the casual case, where the threshold is simply switched off.

The advance tax deposit

This is the feature that makes casual registration different from every other kind. Section 27(2) requires that, at the time of submitting the registration application, a casual taxable person makes an advance deposit of tax equal to the estimated tax liability for the period for which the registration is sought. The registration is not granted until that deposit is made.

Three practical points follow from the wording:

1. The estimate is yours. There is no prescribed percentage of turnover and no standard figure. You forecast what you expect to sell during the period, apply the rates that apply to your goods or services, and deposit that. Get the rates right from the current GST rate slabs rather than from an old price list.
2. It is a deposit, not a payment. The money is credited to your electronic cash ledger and is then used to discharge liability as you actually file. An over-estimate is a cash-flow cost you recover later, not tax you have lost; an under-estimate means topping up the cash ledger before you can file.
3. It is per period. If you extend the registration, you deposit again for the extended period. There is no single lifetime deposit.

Because the deposit is tied to your estimate, the sensible approach for a first-time exhibitor is to estimate on the optimistic side of your sales forecast rather than the conservative side. Running out of cash-ledger balance mid-event is an avoidable irritation, and the surplus comes back through the refund route described below.

How the registration actually works

The mechanics sit on top of the ordinary GST registration flow, with two differences: a deadline before you start, and a payment step in the middle.

1. Apply at least five days before you begin supplying. The proviso to Section 25(1) requires a casual taxable person to apply for registration at least five days prior to the commencement of business. Work backwards from the first day of the fair, not from the day the stall is booked.
2. Fill Part A of FORM GST REG-01 with PAN, mobile number and email. A casual taxable person is a resident Indian entity, so a PAN is required — this is one of the sharpest differences from the non-resident category.
3. Receive a Temporary Reference Number (TRN) and complete Part B, declaring the period for which registration is sought. That declared period is what the advance tax is computed against.
4. Pay the advance tax against the TRN. On payment, the acknowledgement is issued and the application moves for processing.
5. Get the GSTIN for that state and start supplying on or after the effective date. The general shape of the portal flow is the same as an ordinary application, which we walk through in the GST registration process guide.

Keep the documents ready before you start: the period dates, the estimated turnover and tax working, proof of the temporary place of business such as the event allotment letter or a short-term lease, and the usual constitution and bank documents. Because the deadline is only five days, a missing document is what actually causes trouble here, not the form itself.

Ninety days, and one extension

Section 27(1) fixes the life of the registration: the certificate is valid for the period specified in the application or 90 days from the effective date of registration, whichever is earlier. If you asked for 20 days, you get 20 days — the 90 is a ceiling, not an entitlement.

The proviso allows the proper officer, on sufficient cause being shown, to extend that period by a further period not exceeding 90 days. The extension is requested in FORM GST REG-11 and has two hard conditions:

• The application must be made before the end of the validity period already granted. An expired registration cannot be extended — you would have to register afresh.
• It must be accompanied by an additional advance deposit of tax equal to the estimated liability for the extension period.

The extension is available once. That gives a hard outer limit of roughly 180 days on a casual registration. If the work in that state is going to outlast that, the honest answer is that it is no longer occasional, and a regular registration for that state is the right instrument.

Returns, input tax credit and the composition bar

While the registration is live, a casual taxable person is a normal taxpayer for return purposes: outward supplies go in GSTR-1 and the summary and payment in GSTR-3B, on the ordinary due dates for the periods the registration covers. The annual return under Section 44 does not apply to a casual taxable person, which is one of the few simplifications the category gets.

Input tax credit works normally. Unlike a non-resident taxable person, a casual taxable person can claim credit on inputs and input services used for the supplies made under that registration — stall fabrication, local transport, event services — subject to the usual conditions in the input tax credit rules, including the supplier having actually reported the invoice. The advance deposit sits in the cash ledger; credit sits in the credit ledger; both are available to discharge the liability in the normal order.

What you cannot do is opt for the composition scheme. Section 10 expressly excludes a casual taxable person from composition, so the flat-rate simplification described in our composition scheme guide is not on the table for the duration of the casual registration, even if your turnover would otherwise qualify.

Getting the unutilised advance back

If you deposited more than you eventually owed — which is the common outcome, since most people estimate with a margin — the balance sitting in the electronic cash ledger is refundable. The condition that trips people up is in Section 54(13): the refund of any balance of the advance tax deposited by a casual taxable person is not granted unless that person has furnished all the returns required for the whole period during which the registration was in force.

So the sequence is: finish supplying, file every GSTR-1 and GSTR-3B for the covered tax periods, and only then claim the balance. In practice the refund of a cash-ledger balance is claimed through the refund application on the portal, and the amount is limited to what is actually left after all liabilities for the period have been discharged.

Two habits make this painless. First, keep the estimate honest rather than wildly padded — you get the excess back, but not quickly. Second, do not treat the last day of the fair as the end of the compliance work; the final return for the last period covered by the registration is what releases the money, and it falls due well after the stall has been packed away.

Casual taxable person vs non-resident taxable person

These two categories look similar — both are occasional, both must register regardless of turnover, both deposit advance tax, both run on a 90-day clock with one extension — and they are routinely confused. The dividing line is simple: a casual taxable person has a fixed place of business somewhere in India, just not in the state where the supply happens. A non-resident taxable person, defined in Section 2(77), has no fixed place of business or residence in India at all.

If you are on the buying side of one of these transactions — booking a contractor who has registered casually for a job in your state, or paying an exhibitor's invoice — it is worth checking the counterparty's GSTIN before you rely on it. A public search returns the taxpayer type, which tells you whether the registration is a casual one, along with its status and the dates that bound it. That matters because a casual GSTIN legitimately stops being active once its period lapses, and an invoice dated after the lapse is a different conversation from one dated inside it. Our notes on vendor GST verification in accounts payable cover how to fold that check into an AP workflow rather than doing it ad hoc.

Frequently asked questions