Input tax credit is what makes GST a value-added tax rather than a tax on tax — it lets you set off the GST you paid on business purchases against the GST you collect from customers. Get it right and your working capital improves; get it wrong (claim something blocked, miss the deadline, or forget to pay a supplier on time) and you can face reversal with interest, or a notice. Here's how ITC actually works, what's blocked, and the deadlines that trip people up most.
Quick Summary
- To claim ITC: valid invoice, goods/services received, supplier's tax reflected in your GSTR-2B, your GSTR-3B filed, supplier paid within 180 days
- Deadline for a financial year's ITC: 30 November of the following year, or your GSTR-9 filing date — whichever comes first
- Commonly blocked:cars/two-wheelers, food & beverages (unless resold), club membership, building construction, goods lost/stolen/gifted
- Miss supplier payment by 180 days: ITC already claimed gets reversed with interest, until you actually pay
The 5 Conditions to Claim ITC (Section 16)
All five of these need to be true — missing even one means the credit isn't valid yet, or gets reversed later:
- Tax invoice or debit note — you must actually hold the document from your supplier
- Goods or services received — credit cannot be claimed on an invoice for something not yet delivered
- Supplier's return reflects the tax — the supplier must have filed their GSTR-1/IFF and the invoice must appear in your GSTR-2B; this is why reconciling with your supplier matters as much as your own filing
- Your GSTR-3B is filed — ITC is claimed through this return
- Payment made within 180 days — you must pay the supplier (invoice value + tax) within 180 days of the invoice date
The Condition Most Businesses Get Wrong
It's not enough that you have a valid invoice — your supplier actually has to file their return and pay the tax for the credit to legitimately show up in your GSTR-2B. This is why chasing a supplier who's slow to file, or stopped filing altogether, matters: their non-compliance can block your ITC even though you did everything right on your end.
What's Blocked Under Section 17(5) — Common Cases
| Category | ITC Blocked? | Exception |
|---|---|---|
| Cars, two-wheelers (passenger) | Yes | Passenger transport business, vehicle dealers, driving schools |
| Food, beverages, outdoor catering | Yes | Used to make a further taxable supply (e.g. restaurants) |
| Health/life insurance, club membership, gym | Yes | Where legally obligatory for employer to provide |
| Building construction/renovation | Yes | Builders/developers in the business of construction for sale |
| Goods lost, stolen, destroyed, written off, or given as gifts/free samples | Yes | No exception |
| Goods/services for personal use | Yes | No exception |
This is a simplified view of the more detailed Section 17(5) list — the exact wording and exceptions matter a lot in borderline cases, so when a purchase is large or unusual, it's worth checking before assuming ITC either way.
The 180-Day Payment Rule
This is the rule that catches businesses with slow-paying habits toward their own vendors:
- You claim ITC on an invoice as usual when you receive it
- If you haven't paid the supplier (invoice value + GST) within 180 days of the invoice date, that ITC is added back to your output tax liability, with interest, in the return for the period after the 180 days lapse
- Once you do pay the supplier — even after the 180 days — you can re-claim the same ITC in the period you make the payment
Deadline to Claim ITC for a Financial Year
Section 16(4) sets a hard outer limit: you can claim ITC for invoices/debit notes of a financial year up to whichever is earlier of —
- 30 November of the following financial year (practically, the GSTR-3B for October, due by 20 November), or
- the date you actually file your annual return (GSTR-9) for that year
Miss this window on an invoice and that credit is generally lost for good — it's one of the most common, and most avoidable, ways businesses leave money on the table. Reconciling GSTR-2B against your purchase books every month (not just once a year) is the practical way to avoid this.
ITC Reconciliation Help
Rajput Lalit & Associates handles monthly GSTR-2B reconciliation, ITC eligibility review and GST return filing for businesses across India, with in-person support for clients in Ambala. Book a free consultation or see our GST Return Filing service.
Frequently Asked Questions
What are the conditions to claim ITC under GST?
You must hold a valid tax invoice or debit note, actually receive the goods or services, have your supplier's tax reflected in your GSTR-2B (meaning they filed their return and paid the tax to government), file your own GSTR-3B, and pay your supplier within 180 days of the invoice date. Miss any one of these, and the credit either doesn't arise or gets reversed.
What is the last date to claim ITC for a financial year?
The earlier of 30 November following the end of that financial year, or the date you file your annual return (GSTR-9) for that year. In practice, since ITC is claimed through GSTR-3B, the effective cutoff is the GSTR-3B for October, due by 20 November. Miss this window and that year's ITC on unclaimed invoices is generally lost.
Can I claim ITC on a car bought for my business?
Generally no. ITC on motor vehicles for passenger transport (cars, two-wheelers) is blocked under Section 17(5), even if used for business. The exceptions are narrow — businesses that transport passengers for a fare, sell or manufacture vehicles, or run driving schools.
What happens if I don't pay my supplier within 180 days?
The ITC you already claimed on that invoice gets reversed, along with interest. Once you do pay the supplier (even later), you can re-claim the same credit. This rule exists to stop businesses from claiming credit on purchases they never actually pay for.
Can a restaurant claim ITC on the food and beverages it buys to cook and sell?
Yes — the block on food and beverage ITC has a specific exception when the same category of goods or services is used to make a further taxable outward supply. A restaurant buying ingredients to cook and sell food is exactly this case, so ITC is generally available (subject to the restaurant's own GST rate structure).
Is ITC available on office building construction?
No, ITC on construction of an immovable property (other than plant and machinery) is blocked, even if the building is used entirely for business, and even where the cost is capitalised. The exception is for businesses in the business of construction/sale of such property (builders, developers).
Disclaimer: This article is for general information based on the CGST Act, 2017, related rules and current CBIC guidance as of September 2026. ITC rules and exceptions are detailed and fact-specific — please verify the latest position or consult a professional before acting on a specific transaction.