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| Claiming Input Tax Credit under GST now depends almost entirely on your GSTR-2B and the Invoice Management System, not just your purchase register or supplier’s invoice. This 2026 guide covers the current claim deadline (30 November following the financial year, not September), the 180-day payment rule, blocked credits under Section 17(5), and what happens when your supplier doesn’t file. |
Input Tax Credit under GST can only be claimed if the invoice appears in your GSTR-2B, the supplier has filed and paid the tax, and you’ve paid the supplier within 180 days. The claim deadline is 30 November following the end of the financial year, or your GSTR-9 filing date – whichever comes first.
Input tax credit under GST used to be a fairly forgiving thing. You booked the purchase, claimed the credit, and sorted out the differences with your supplier later. That is not how it works any more. The portal now decides a lot of it for you, and by the time you open GSTR-3B, most of the decisions have already been made.
This is the 2026 update. A few of the rules people still quote from memory – the old September deadline, for instance – have changed. Here is the current position, explained the way we would explain it to a client’s accounts team.
Basic Conditions to Claim ITC – What the Law Actually Requires
Section 16(2) of the CGST Act lays down the conditions, and all of them must be met. Not most of them. All.
● You hold a valid tax invoice or debit note. A bill of supply will not do, because no GST is charged on one. For imported goods, the bill of entry is your document.
● The invoice appears in your GSTR-2B. This is the condition in Section 16(2)(aa), and it is the one that decides most disputes. More on it in a moment.
● You have actually received the goods or services. Where goods come in lots, the credit is available only when the last lot arrives.
● The tax has reached the government. Your supplier must have filed and paid, not merely invoiced you.
● You have filed your GSTR-3B for the period. The claim is made through that return, and nowhere else. Getting the credit into your return is only half the job – see how to actually apply that credit once claimed, since the IGST-first sequencing rule trips up businesses almost as often as the eligibility conditions do.
There is one more condition, and it sits in Rule 37 rather than Section 16. You must pay the supplier the invoice value along with the tax within 180 days of the invoice date. Miss that and the credit has to be reversed, with interest, until you pay. There is no small-value exemption from this rule, whatever you may have read.
And a point that trips up smaller clients: a composition dealer cannot claim input tax credit under GST at all. Registration alone is not enough. You have to be a regular taxpayer.
The GSTR-2B Matching Requirement Businesses Still Get Wrong
Here is the sentence to remember: if the invoice is not in your GSTR-2B, you cannot claim the credit, no matter how good your paperwork is.
GSTR-2B is the static, month-wise statement of the credit available to you, built from what your suppliers have filed. Your purchase register is not evidence of entitlement. It is only evidence of what you bought. Claiming from your books and hoping the 2B catches up later is exactly what produces a DRC-01C intimation, and then a demand.
What has changed is how invoices get into your 2B in the first place. The Invoice Management System (IMS) on the portal now sits between your supplier’s GSTR-1 and your GSTR-2B. Every B2B invoice your supplier files lands on your IMS dashboard, and you accept, reject, or keep it pending. Reported changes take this further: IMS is now a compulsory part of the monthly cycle for regular taxpayers, and the portal has been tightening the link between what sits in your 2B and what you can put into GSTR-3B. Please confirm the current position with your GST adviser before you change your filing routine.
Two practical traps come with it.
● Doing nothing is not neutral. If you take no action on an invoice, it is treated as accepted and flows into your 2B. A supplier’s typing error becomes your inflated credit, and your problem.
● Reject is not a parking slot. Once you reject and file, getting the credit back depends entirely on the supplier re-reporting the invoice. Where you are unsure, keeping it pending is usually the safer action.
The practical answer is unglamorous. Reconcile the purchase register against the 2B every month, before the return, not at the year end.
Time Limit to Claim ITC – Don’t Miss This Deadline
This is where a lot of older guidance is now simply wrong, including guidance still floating around on the internet.
Under Section 16(4), the credit on an invoice or debit note must be claimed by the earlier of:
● 30 November following the end of the financial year to which the invoice relates, or
● the date you file the annual return (GSTR-9) for that year.
So for an invoice dated in FY 2025-26, the outer limit is the GSTR-3B for October 2026, filed by 20 November 2026, or the date of your annual return, whichever comes first. The old “September return” deadline has not applied since October 2022. If your team is still working to a September cut-off, you are giving away two months and, worse, you may be treating a live credit as dead.
After that date, the credit is gone. There is no appeal, no condonation, and no relief for the fact that the supplier filed late. This is why a supplier who files his GSTR-1 fifteen months late can cost you real money.
One exception worth knowing, because it still helps with old assessments: Sections 16(5) and 16(6), inserted with effect from 2024, gave relief for certain older years and for taxpayers whose registration was cancelled and later restored. If you have a notice covering FY 2017-18 to FY 2020-21, check whether it applies before you pay.
Blocked Credits Under Section 17(5) – The Short Version
Even a perfectly matched, perfectly timed invoice gives you nothing if the item itself is blocked. The main ones:
● Motor vehicles seating up to 13 persons, along with their insurance, repairs and maintenance, unless you are in the business of selling them, running them, or teaching people to drive.
● Food and beverages, outdoor catering, health services, beauty treatment, club and gym memberships, and employee travel benefits, except where an employer is obliged by law to provide them.
● Works contract services and goods or services used for constructing immovable property, other than plant and machinery.
● Goods lost, stolen, destroyed, written off, or given away as gifts and free samples.
● Anything used for personal consumption, and goods or services bought from a composition dealer.
The exceptions inside these clauses matter, and they are where most of the argument happens. We have covered them in detail, with examples, in our post on blocked input credit under GST, so there is no point repeating the whole thing here. If you are building an ITC eligibility matrix for your team, start there.
What Happens When Your Supplier Doesn’t File Their Return
This is the one that feels unfair, and it is worth being clear about.
If your supplier does not file GSTR-1, the invoice never reaches your 2B, and you cannot claim the credit at all. You have paid the tax to him, and you are simply out of pocket until he files.
There is a second layer. Under Rule 37A, if the supplier files his GSTR-1 but does not file the GSTR-3B for that period by 30 September of the following financial year, the credit you claimed has to be reversed by 30 November of that year. If you reverse it late, interest runs. You can reclaim it later, once the supplier finally files his GSTR-3B, but the money sits with the government in the meantime.
So the credit depends on someone else’s discipline. A few things actually help:
● Check the supplier’s filing status before you release large payments, not after.
● Use the payment as leverage. Withholding the tax portion until the invoice appears in your 2B is a legitimate commercial term, and it works better than emails.
● Put it in the purchase order. A simple clause making payment of the tax component conditional on the invoice appearing in your GSTR-2B saves a lot of argument later.
ITC Reversal Scenarios and How to Avoid Them
Reversal means giving back credit you have already taken. The common triggers:
● Supplier not paid within 180 days (Rule 37). Run an ageing report on your creditors every month and look at anything crossing 150 days. This one is entirely within your control, which is what makes it annoying when it happens.
● Supplier has not filed his GSTR-3B (Rule 37A). Covered above. Track it before the September cut-off, not after.
● Exempt and personal use (Rules 42 and 43). If you have both taxable and exempt supplies, the common credit has to be split every month and trued up at the year end. Businesses with a small exempt stream, such as interest income or a bit of trading in exempt goods, forget this more often than you would expect.
● Credit notes from the supplier. When he reduces the invoice, your credit reduces with it. Under the current system this now flows through your IMS actions, so a credit note you ignore is not a credit note that goes away.
● Registration cancelled. Credit on stock and capital goods held on that date has to be reversed.
Report reversals in the same period they arise, and keep the reclaims tracked in the Electronic Credit Reversal and Re-claimed Statement. That statement exists precisely so the department can see whether what you reclaimed matches what you reversed. Assume it will be checked.
FAQs:
1. What is the time limit to claim Input Tax Credit under GST in 2026?
The deadline is 30 November, following the end of the financial year to which the invoice relates, or the date you file your GSTR-9 annual return – whichever is earlier. The older “September return” deadline stopped applying from October 2022, so any internal process still working to that cutoff is losing nearly two months of eligible claim time.
2. Can I claim ITC if my supplier hasn’t filed their GST return?
No. If your supplier hasn’t filed GSTR-1, the invoice never reaches your GSTR-2B, and the credit cannot be claimed regardless of how complete your own paperwork is. If the supplier files GSTR-1 but misses their GSTR-3B by 30 September of the following year, any credit you already claimed must be reversed by 30 November, though it can be reclaimed once the supplier eventually files.
3. What happens if I don’t pay my supplier within 180 days?
Under Rule 37, if you haven’t paid the supplier the full invoice value (including GST) within 180 days of the invoice date, the ITC you claimed must be reversed with interest. There’s no small-value exemption to this rule – it applies regardless of the invoice amount.
4. Is Input Tax Credit available on motor vehicles, food, and employee benefits?
Generally no. Section 17(5) blocks ITC on motor vehicles seating up to 13 people (with some exceptions for dealers and driving schools), food and beverages, club or gym memberships, and works contract services for immovable property – unless the business is specifically in that line of activity or legally required to provide the benefit.
5. Why is GSTR-2B more important than my own purchase register for claiming ITC?
Your purchase register only proves what you bought – it doesn’t establish entitlement to credit. Under Section 16(2)(aa), the invoice must actually appear in your GSTR-2B, which is built from what your suppliers report. A mismatch between your books and your 2B is one of the most common triggers for a GST scrutiny notice.
6. Can a composition dealer claim Input Tax Credit under GST?
No. Composition dealers cannot claim ITC under any circumstances, regardless of registration status. This is a fundamental restriction of the composition scheme, not something that depends on the type of purchase.
7. What should I do if I miss the ITC claim deadline?
Once the 30 November (or GSTR-9 filing) deadline passes, the credit is permanently lost – there’s no appeal or condonation available, even if the supplier filed late. The only exceptions are Sections 16(5) and 16(6), introduced in 2024, which offer limited relief for certain older financial years (FY 2017-18 to FY 2020-21) and for taxpayers whose registration was cancelled and later restored.
