Can a Business Charge GST Without a GST Number?

No. Section 32 of the CGST Act is explicit: a person who is not a registered person shall not collect any amount by way of tax, and shall not indicate tax on an invoice. Collecting it anyway is an offence, and any amount collected as tax must be paid to the government whether or not the supply was even taxable.

The rule: Section 32 and why it exists

GST is a destination-based tax collected by registered persons on behalf of the government and passed on through the supply chain via input tax credit. The entire mechanism depends on the person collecting tax being identifiable, accountable, and obliged to remit what they collect. Section 32(1) of the CGST Act makes this explicit: a person who is not a registered person shall not collect, in respect of any supply of goods or services or both, any amount by way of tax. Section 32(2) goes further and prohibits an unregistered person from indicating on any invoice, bill of supply or similar document any amount as representing central tax, state tax, integrated tax or cess, even implicitly.

This is not a technicality about paperwork. It exists because the entire downstream credit chain relies on the number printed on the bill being real. If anyone could add a tax line to an invoice regardless of registration, a buyer would have no way to distinguish genuine tax, which funds a corresponding credit somewhere in the chain, from an unbacked charge that simply inflates the price. The prohibition in Section 32 is what makes a GSTIN meaningful in the first place: it is the only thing that authorises a seller to add tax to a bill.

It follows that the question is never about the goods or services themselves. A supply can be entirely within the scope of GST and still carry no lawful tax charge, simply because the person making it has no valid registration. Conversely, once a person is registered, whether voluntarily or because they crossed the turnover threshold that makes registration compulsory, they are obliged to charge tax correctly on every taxable supply they make.

What happens to money collected as tax anyway

Section 76 deals directly with tax collected but not deposited with the government. Its wording is deliberately broad: every person who has collected any amount as representing tax, whether or not the supply in respect of which such amount was collected is taxable, is liable to pay that amount to the government, and this obligation applies regardless of whether the person collecting it holds a valid registration at all. In other words, the fact that a collector was never entitled to collect tax in the first place does not exempt them from having to hand over what they collected — the law treats it as government money the moment it was collected under the label of tax.

The process behind Section 76 involves a show cause notice, a chance to respond, and an adjudication order, with interest running on the amount from the date it was collected until it is paid. The person who collected the tax cannot simply argue that the supply was not taxable, or that they were never registered, as a defence to keeping the money — those facts make the original collection unlawful, but they do not make the money theirs to retain.

Layered on top of this, Section 122(1) sets out penalty consequences for a taxable person who collects tax but fails to pay it to the government within the period prescribed. The precise penalty structure is graduated and tied to the amount involved and how long the default continues; rather than quote a specific rupee figure here, treat this as a real financial exposure that compounds the longer the amount sits unpaid, and confirm the current figures against the CGST Act and CBIC notifications if you need them for a specific case.

What a legitimate unregistered seller does instead

A genuinely unregistered seller — someone below the registration threshold who has not opted to register voluntarily — has exactly one lawful way to price a sale: charge a single, all-inclusive price with no tax component shown anywhere. They cannot issue a tax invoice, because a tax invoice is by definition a document that shows a tax charge under a valid registration. They also should not issue any document that shows a tax breakup at all, even an approximate one, because Section 32(2) prohibits indicating tax on any document, not only on something styled as a tax invoice.

In practice this means a small unregistered vendor's bill should read as a plain sale receipt: item, quantity, total amount. No GST line, no CGST/SGST split, nothing resembling a tax computation. If you see any of those things on a bill and the seller cannot produce a valid GSTIN to back it, the tax line has no legal basis.

Composition dealers sit in a different, often-confused category. A composition dealer is registered — they hold a valid GSTIN and appear on the GST portal — but the composition scheme itself specifically bars them from collecting tax from their customers. Under the scheme, they pay tax themselves, computed on their total turnover, out of their own margin, and they are required to issue a bill of supply rather than a tax invoice, along with a declaration on that bill stating that they are a composition taxable person, not eligible to collect tax on supplies. The full mechanics of eligibility and rates are covered in the guide to the composition scheme turnover limit.

This is where most honest confusion happens. A bill of supply from a composition dealer can look, at a glance, very similar to a tax invoice — same layout, same seller details, same GSTIN — but it must not carry a tax line, and it carries that declaration instead. The distinction between the two document types, and what each one legally permits, is worth understanding properly; see the dedicated comparison of a bill of supply against a tax invoice.

What it costs you as the buyer

Most people searching this question are not the seller — they are the buyer who has just noticed a GST line on a bill and is not sure it is real. Here is what is actually at stake for you.

You get no input tax credit. Credit under GST is conditional on holding a valid tax invoice issued by a registered supplier, and on that supplier having actually remitted the tax to the government (directly or through the return-matching mechanism). See the fuller mechanics in the guide to how input tax credit works. An amount labelled GST on a bill from someone who is not registered fails this on every count: there is no valid tax invoice, because an unregistered person cannot issue one, and there is no tax actually reaching the government for you to claim against. The amount is, functionally, just a part of the price you paid — it happens to be printed as a percentage, but it buys you nothing.

You have overpaid for nothing. Depending on the rate the seller claimed to be charging, you have handed over roughly 5 to 18 percent more than the goods or services were actually worth, with no credit, no compliance benefit, and no legal tax paid anywhere on your behalf. It is simply a markup dressed up as tax.

If you already claimed credit on it, that credit is recoverable from you, with interest and penalty. Tax authorities do not need the seller to be caught for this to surface — a mismatch between your claimed credit and the seller's filings (or the absence of any filings, because there is no registration to file under) is exactly the kind of discrepancy that gets flagged during scrutiny or audit. The credit gets reversed, interest accrues from the date it was availed, and penalty provisions can apply on top. The exposure sits with you as the recipient, not only with the seller who wrongly charged the tax.

How to spot it on a bill

A few checks, run in order, catch nearly every case:

• No GSTIN printed at all. A tax invoice is legally required to show the supplier's GSTIN. If a bill has a tax line but no GSTIN anywhere on it, that alone is disqualifying.
• A GSTIN that fails the checksum. Every GSTIN carries a check digit computed from the preceding characters. A number that fails this check was never issued to anyone.
• A GSTIN that returns nothing, or shows cancelled, on the portal. A structurally valid-looking number is not the same as an active registration. If a lookup shows no record found or a cancelled status, see the notes on what a "no record found" result actually means and on how cancellation and revocation work — a cancelled GSTIN cannot lawfully be used to charge tax from the effective date of cancellation.
• A "GST" line alongside a composition declaration. If the bill states the seller is a composition taxable person not eligible to collect tax, and it also shows a GST amount, the two statements contradict each other — the tax line should not be there.
• A GSTIN registered to a different legal name than the one on the letterhead. The name returned by a verification lookup should match the business issuing the bill. A mismatch usually means someone else's GSTIN has been borrowed or copied.
• A handwritten GSTIN. Genuine tax invoices are almost always generated through billing software with the GSTIN printed as part of the template. A number added by hand on an otherwise printed bill is worth double-checking.
• A tax split that does not add up to the stated rate. If the bill claims a particular rate but the CGST and SGST figures shown do not sum to it, or do not split evenly between the two, something in the computation — or the legitimacy of the charge — is off.

You can run a fuller version of this checklist against a real-looking but fraudulent GSTIN in the guide on how to check a fake GST number, and verify any number directly with GST number search or the GSTIN validator.

The grey cases: ARN windows, cancelled registrations and non-tax charges

Not every case of a questionable tax line is outright fraud. A few situations are genuinely ambiguous, and they are worth understanding on their own terms because they are where most real-world confusion sits.

A business that has applied for registration and is waiting on approval holds an Application Reference Number, or ARN, rather than a GSTIN. Some such businesses start charging tax in anticipation of approval, on the reasoning that registration, once granted, is typically effective from the date of application or from a date fixed under the rules. This is a real and recognised route — a registered person can issue a revised invoice covering the period between the effective date of registration and the date the registration certificate was actually issued — but it depends on the registration eventually being granted, and on the seller following through with the revised invoice. Until that revision happens, a tax line charged during the ARN window sits in a genuine grey area rather than being straightforwardly lawful.

A business whose registration was cancelled, but whose invoicing software or printed stationery was never updated, is a different problem — an administrative failure rather than deliberate fraud. The seller may not even realise they are still printing a GSTIN and tax line that are no longer valid. That does not change the outcome for you as the buyer: the credit is gone either way, because credit follows the state of the registration on the date of supply, not the seller's intentions or their awareness of their own status.

Some charges that look like GST on a bill are not tax at all. Service charge added by a restaurant, delivery fees from a platform, and packaging or convenience charges are common non-tax line items that sit alongside the actual GST line and sometimes get mistaken for it, particularly when the bill's formatting is unclear. The rate structure that should actually apply to a restaurant bill, and how to tell it apart from these other charges, is covered in the explanation of restaurant GST rates.

State-level levies on alcohol sit outside GST entirely — alcohol for human consumption is constitutionally excluded from GST and remains subject to state excise duty and VAT instead. A charge on a liquor bill that looks like a tax line is very likely one of these state levies, not GST, and should not be evaluated against GST rules at all.

What to do about it

If you find a tax charge you are not confident is genuine, work through it in this order. Raise it with the seller in writing first, describing exactly what you found and asking them to either produce a valid GSTIN or issue a corrected bill without the tax line. Withhold the tax portion of the payment while this is unresolved, rather than paying the full amount and hoping for a refund later. Verify the GSTIN independently through the portal or a verification tool rather than accepting the seller's word — a seller who is genuinely registered will have no difficulty confirming it, and one who is not will usually back down once asked directly. If the seller does not resolve it, escalation through the GST portal's grievance channel is the next step, and the practical detail of how to file that report, what to attach, and what response to expect is covered fully in the guide to reporting a fake GST invoice.

If you are the seller: when registration is compulsory

Some readers arrive at this question from the other side, wondering whether they can start charging GST before they are registered, perhaps to avoid looking unprofessional to a corporate client who expects a tax invoice. The answer is unchanged by who is asking: you cannot lawfully charge GST until your registration is granted and you hold a GSTIN, regardless of how the request is framed.

Registration becomes compulsory once your aggregate turnover crosses the applicable threshold, and separately becomes compulsory regardless of turnover for certain categories of supply — inter-state supply of goods, supply through an e-commerce operator required to collect tax at source, and a handful of other specified cases. The current threshold figures and the full list of categories are set out in the guide to the GST registration turnover limit, and are worth confirming against the current CBIC notification rather than assuming a figure, since these thresholds have been revised over time.

If your turnover is below the compulsory threshold and none of the mandatory categories apply to you, voluntary registration is the only lawful route to being able to charge GST and issue a proper tax invoice. It brings compliance obligations — regular returns, invoicing discipline — but it is also what lets your business-to-business customers claim input tax credit on what they buy from you, which is often the actual reason a small supplier chooses to register before they strictly have to.

Seller type	Can they charge GST?	Document issued	Buyer gets input tax credit?
Registered supplier (regular scheme)	Yes, on taxable supplies	Tax invoice	Yes, subject to the usual conditions
Composition dealer	No — registered but barred from collecting tax	Bill of supply, with a composition declaration	No
Unregistered supplier	No — prohibited under Section 32	Plain bill or receipt, no tax line permitted	No

Frequently asked questions

Frequently asked questions

Can a business charge GST without a GST number?

No. Section 32 of the CGST Act prohibits any person who is not a registered person from collecting any amount by way of tax, or from indicating any amount as tax on an invoice, bill of supply, or any similar document. Charging GST is a privilege that attaches to a valid GSTIN, not to the sale itself.

What happens to GST collected by an unregistered person?

Under Section 76, any amount collected as representing tax, whether or not the supply was actually taxable, must be paid to the government, along with interest, regardless of who collected it or under what authority. A show cause notice and adjudication process follows if it was not deposited. It cannot simply be kept as extra margin.

Can I claim input tax credit if my supplier is not GST registered?

No. Input tax credit requires a valid tax invoice issued by a registered supplier, and the tax charged must actually reach the government. An unregistered person cannot issue a tax invoice at all, so any amount they label as GST is simply part of the price you paid, not a claimable credit.

Is a composition dealer allowed to charge GST?

No. A composition dealer is registered, but the scheme specifically bars them from collecting tax from customers. They must issue a bill of supply, not a tax invoice, and carry a declaration stating they are a composition taxable person not eligible to collect tax. Their price already includes the tax they pay from their own margin.

How do I check if a GSTIN printed on a bill is real?

Verify the checksum digit, then look the number up on the GST portal or a verification tool to confirm it is active and matches the legal name on the invoice. A GSTIN that fails the checksum, returns no record, or shows as cancelled means the tax charged on that bill cannot be backed by a genuine registration.

What should I do if I find I was wrongly charged GST?

Raise it with the seller in writing first and ask for a corrected bill or refund of the tax portion. Verify the GSTIN independently rather than taking the seller's word for it. If the seller does not resolve it, you can escalate through the GST portal's grievance route, which is covered in detail separately.