GST Input Tax Credit Time Limit: Section 16(4) and the Last Date to Claim ITC

GST lets a business set the tax it pays on purchases against the tax it collects on sales, but only for a limited time. Under section 16(4) of the CGST Act, credit on an invoice or debit note of a financial year has to be taken by 30 November of the next year. For purchases made between April 2025 and March 2026, that day is 30 November 2026, about a month after this guide was written. Credit not claimed by then cannot be claimed later in any return, and the GST already paid to the supplier becomes a cost. This guide covers the rule, how to find the year a document belongs to, which return is your last chance, what else closes on the same day, what you can still claim afterwards, and a year-end check worked out for a distributor.

Written on 28 October 2026. The law is from the text of the CGST Act, 2017 (sections 16, 34, 39, 44 and 50) and the CGST Rules, 2017 (rules 36, 37, 37A, 61, 80 and 88B), as published on CBIC's tax information portal. Also used are Circulars 211/5/2024-GST and 170/02/2022-GST, the GST Network's FAQs on the Invoice Management System and on GSTR-9, the GST Council's September 2025 newsletter on Notification 15/2025-Central Tax, and the 57th GST Council's release of 8 October 2026. State GST laws carry the same provisions. This explains the law; it is not advice on any business's credit.

Section 16(4): the time limit in one sentence

The section reads: a registered person "shall not be entitled to take input tax credit in respect of any invoice or debit note" after 30 November "following the end of financial year to which such invoice or debit note pertains or furnishing of the relevant annual return, whichever is earlier". Three things follow from it.

• "Take" means claim in a return. Credit reaches your electronic credit ledger only through GSTR-3B. A credit in your books but not in a return filed by the cut-off is lost.
• The year is the year of the document. An invoice dated 28 March 2026 is a 2025-26 invoice, even if the goods arrived in April or the supplier uploaded it in October.
• The earlier of two dates wins. If you file the 2025-26 annual return (GSTR-9) on 10 November, your window closes on 10 November, not 30 November.

The date has been 30 November since 1 October 2022, when the Finance Act, 2022 replaced the earlier limit, the due date of the September return. The limit has been relaxed only once: section 16(5) let credit for 2017-18 to 2020-21 be taken in any return filed by 30 November 2021. A separate sub-section, 16(6), gives extra time where a cancelled registration is later restored. No relaxation exists for 2025-26.

The time limit sits on top of the other conditions in section 16(2): a valid tax invoice, receipt of the goods or services, tax actually paid by the supplier, and your own return filed. Rule 36(4) adds that the invoice must have been reported by the supplier in GSTR-1, GSTR-1A or the invoice furnishing facility, and must appear in your GSTR-2B. A late claim fails even if every other condition is met, and a timely claim still needs all of them.

Which year a document belongs to

Two of these rows need care.

Debit notes. Until 31 December 2020 the section spoke of the "invoice relating to such debit note", so a debit note took the year of the original invoice. The Finance Act, 2020 removed those words from 1 January 2021. Now a debit note issued in May 2026 is a 2026-27 document with its own cut-off, whatever the date of the invoice it adjusts.

Reverse charge on purchases from unregistered persons. Here the buyer issues the invoice itself under section 31(3)(f). CBIC's Circular 211/5/2024-GST of 26 June 2024 settled the dispute over which year counts: it is "the financial year in which the invoice has been issued by the recipient". The circular comes with two warnings. Interest is payable on the tax paid late, counted from when it was first due, and a self-invoice issued late "may also be liable to penal action" under section 122. A late self-invoice moves the credit into a later year; it does not excuse the delay. Where the supplier is registered and issues its own invoice under reverse charge, the general rule applies: the year of that invoice.

Your last return: monthly and quarterly filers

Because credit is taken in GSTR-3B, the practical question is which return can still carry it. Rule 61 sets the due dates: the 20th of the next month for monthly filers, and the 22nd or 24th of the month after the quarter for quarterly (QRMP) filers, depending on the State.

The quarterly row surprises many small businesses. A QRMP filer that has already filed its July–September return has no return left before 30 November, so any 2025-26 invoice that turns up now is lost. For a monthly filer, a GSTR-3B filed between 21 and 30 November keeps the credit but pays the late fee. That is ₹25 a day of central tax under Notification 76/2018-Central Tax, plus the same in State tax, so ₹50 a day (₹20 for a nil return): ₹400 for eight days.

Two conditions sit behind the October return. First, the October GSTR-2B must exist. The GST Network's IMS FAQ says the system does not generate a draft GSTR-2B on the 14th if the previous period's GSTR-3B has not been filed, so the September return has to be in first. Second, an invoice reaches your October GSTR-2B only if the supplier reports it in time for that statement: in its October GSTR-1, due on 11 November, or, for a quarterly supplier, through the invoice furnishing facility. An invoice the supplier uploads later lands in a later GSTR-2B, too late to claim.

What else closes on the same day

The same date runs through two other provisions. If you are a supplier as well as a buyer, both matter.

• Credit notes for 2025-26 supplies (section 34(2)). A supplier must declare a credit note in a return filed by 30 November following the year of the supply, or by the annual return if earlier. After that, it can no longer reduce its output tax with that note. Since 1 October 2025, a further condition applies: the reduction is allowed only if the buyer has reversed the credit linked to the note.
• Reversal when your supplier did not file (rule 37A). Rule 37A applies where you claimed credit in 2025-26 on an invoice the supplier reported in GSTR-1, but the supplier had not filed its GSTR-3B for that period by 30 September 2026. You must reverse that credit in a GSTR-3B filed on or before 30 November 2026. If you don't, it is payable "along with interest". When the supplier does file, you can re-avail the credit in a later return. The portal sends these documents straight to GSTR-2B as credit to be reversed; they do not appear in IMS for you to act on.

Credit that can come back after the cut-off

Some credit can come back after 30 November. Rule 37(4) says the section 16(4) limit "shall not apply to a claim for re-availing of any credit … that had been reversed earlier". Two cases are clear:

• Unpaid suppliers (rule 37). If you do not pay a supplier within 180 days of the invoice, you reverse the credit, with interest, in the return for the period after the 180 days. You re-avail it when you pay, even years later.
• Rule 37A reversals. You re-avail the credit in a later return once the supplier files. The GST Network's GSTR-9 FAQ has these reclaims reported in the year they are made, with no reference to the cut-off.

Credit parked in Table 4(B)(2) for other reasons is less settled. Circular 170/02/2022-GST says credit reversed because the goods had not arrived (section 16(2)(b)) or the supplier had not paid the tax (section 16(2)(c)) goes in Table 4(B)(2) of GSTR-3B, and is reclaimed in Table 4(A)(5) with the detail in Table 4(D)(1). The words of rule 37(4) are wide enough to cover such a reclaim. But the GST Network's GSTR-9 FAQ describes reclaims other than under rules 37 and 37A as made within the previous year's cut-off, "till the specified time period (i.e. 30th November 2025)". The safe course is to reclaim parked 2025-26 credit by 30 November 2026 wherever its condition has been met by then.

Blocked credits are a separate matter. Section 17(5) bars credit on items such as motor vehicles that seat up to 13 people (with exceptions), food and beverages, club membership and goods or services for personal use. Those cannot be claimed at all, so timing does not help.

The annual return can close the window sooner

The phrase "or furnishing of the relevant annual return, whichever is earlier" catches businesses that file GSTR-9 early. The 2025-26 annual return is due on 31 December 2026 (section 44 and rule 80), and the reconciliation statement GSTR-9C is due with it above ₹5 crore of turnover. If you file GSTR-9 for 2025-26 on 5 November, you cannot take any further 2025-26 credit after that day, even though 30 November has not yet come.

Notification 15/2025-Central Tax of 17 September 2025 exempts any registered person with aggregate turnover up to ₹2 crore in a year from filing the annual return, from 2024-25 onwards. For those businesses no annual return closes the window early, so 30 November is the only limit. For everyone else the order matters: finish the credit claims, then file GSTR-9.

Credit of 2025-26 claimed between April and November 2026 is shown in Table 8C of the 2025-26 GSTR-9. The GST Network's GSTR-9 FAQ describes that table as credit of the current year "availed in next FY within the specified time period". It shows again in Table 6A1 of the next year's GSTR-9, where it is kept apart from that year's own credit. Reclaims of credit reversed under rule 37 or 37A are kept out of both tables.

The invoice management system and the cut-off

Since October 2024, the invoices, debit notes and credit notes your suppliers report show in the Invoice Management System (IMS), where you accept, reject or keep it pending. Records you take no action on are deemed accepted when GSTR-2B is generated. Three points in the GST Network's FAQs bear on the time limit:

• Pending is not claimed. A record kept pending stays out of GSTR-2B and GSTR-3B. It stays on the dashboard only "till the time of cut-off date as per section 16(4)", and once that passes it is removed from IMS. Accept any 2025-26 invoice you have been holding pending before you file the return that is to carry it, then recompute GSTR-2B so the change reaches GSTR-3B.
• Late documents are flagged for you. Invoices and debit notes on which credit is barred by section 16(4) do not appear on the IMS dashboard at all. They go straight to the "ITC Not Available" section of GSTR-2B. If a supplier uploads a 2025-26 invoice after your window closes, that is where you will find it.
• Credit notes now have a short pending window. From the October 2025 tax period, credit notes can be kept pending, but only for one tax period: one month for a monthly filer, one quarter for a quarterly filer. If you take no action after that, the note is treated as accepted.

A distributor's year-end check, worked out

Consider a distributor in Pune that files monthly. Its purchase books for 2025-26 show input tax of ₹8,40,600. Its returns from April 2025 to September 2026 have claimed ₹7,92,000. In late October 2026 its accountant matches the gap of ₹48,600, document by document:

The same check turns up one more item. A supplier whose November 2025 invoices gave the distributor ₹7,200 of credit had still not filed its own GSTR-3B for November 2025 by 30 September 2026. Under rule 37A, that ₹7,200 has to be reversed in a return filed by 30 November 2026. The October GSTR-3B therefore claims ₹39,600 and reverses ₹7,200, for a net gain of ₹32,400 in the credit ledger. If the supplier files later, the ₹7,200 comes back.

Two timings matter here. If the October return is filed on 28 November instead of 20 November, the distributor pays a late fee of ₹400 and keeps the credit. If it is filed on 2 December, the ₹39,600 is lost for good, while the ₹7,200 reversal is still due with interest.

The figures are for illustration. The tax is split between CGST and SGST (or is IGST) as on each invoice; the time limit is the same for all three.

If credit is taken after the cut-off

The portal places barred invoices under "ITC Not Available", so a late claim has to be entered by hand in GSTR-3B. Such a claim is credit "wrongly availed". It has to be reversed. If it has also been used, interest is payable under section 50(3). Rule 88B counts that interest only from the day the credit is used, which is when the balance in the electronic credit ledger falls below the wrong amount, until it is reversed. A demand for any amount left unpaid follows the usual notice process. Reverse it yourself, through Table 4(B)(1) or a DRC-03 payment, as soon as the mistake is found; that is cheaper than waiting for the notice.

What the 57th GST Council proposes

On 8 October 2026 the 57th GST Council recommended amending sections 16, 37 and 39 of the CGST Act "to align provisions relating to furnishing of statement of outward supply under section 37 and the return under section 39" with the time limit in section 16(4). It also recommended rules for the IMS, including how long a credit note can be kept pending. These are recommendations. They need an amendment to the Act and new rules before they take effect. They do not change the 30 November 2026 limit for 2025-26 credit. When the amendment comes, this guide will set out what changes.

A checklist before the cut-off

1. Match the books with GSTR-2B for April 2025 to March 2026, plus the GSTR-2B for April to October 2026, to find 2025-26 invoices that arrived late.
2. Write to suppliers whose 2025-26 invoices are missing and ask them to report the invoices in their October GSTR-1 or invoice furnishing facility by 11 November.
3. Clear IMS. Accept or reject every 2025-26 record kept pending, and recompute GSTR-2B before filing.
4. Check rule 37A. List 2025-26 credit from suppliers who had not filed GSTR-3B by 30 September, and reverse it in the October return.
5. Bring back parked credit. Credit parked in Table 4(B)(2) whose condition is now met, such as goods since received, is safest reclaimed in the October return.
6. Issue any overdue reverse-charge self-invoices and pay the tax with interest.
7. File the September and October GSTR-3B (or, for a quarterly filer, the July–September return) by 30 November, ideally by the due date.
8. File GSTR-9 only after that.

For the GST rules a small business usually meets first, see the guide to GST for a small service business. What the 57th Council's other recommendations change is in the 57th GST Council guide.

Frequently Asked Questions

What is the last date to claim ITC for FY 2025-26? 30 November 2026, or the day you file the annual return for 2025-26 if that is earlier. The credit must be in a GSTR-3B filed on or before that day.

Can I claim 2025-26 ITC in the GSTR-3B for October 2026? Yes, if you file that return by 30 November 2026. Its due date is 20 November; filing between 21 and 30 November keeps the credit but costs a late fee of ₹50 a day.

What happens if I file the October GSTR-3B after 30 November? Credit on 2025-26 invoices and debit notes in it is barred by section 16(4). If claimed, it must be reversed, with interest if it was used.

I file GST returns quarterly. What is my last chance? The July–September 2026 return. If you have not filed it yet, file it by 30 November with the credit in it. The October–December return cannot be filed before January, which is too late.

Is the ITC time limit counted from the invoice date or the date of receipt? From the financial year of the invoice date. Goods received later, or an invoice uploaded later, do not move the year. For a reverse-charge self-invoice on a purchase from an unregistered person, the year is the year the self-invoice is issued.

Does the section 16(4) time limit apply to debit notes? Yes, counted from the year of the debit note's own date. A debit note issued in 2026-27 on a 2025-26 invoice can be claimed until 30 November 2027.

Can reversed ITC be reclaimed after 30 November? Credit reversed under rule 37 (supplier not paid within 180 days) or rule 37A (supplier's return not filed) can: rule 37(4) says the time limit does not apply to re-availing credit reversed earlier. For other credit parked in Table 4(B)(2), the GST Network's GSTR-9 FAQ treats reclaims as made within the cut-off, so reclaim it by 30 November where you can.

What happens to invoices kept pending in IMS? They stay out of GSTR-2B and GSTR-3B. They remain in IMS only until the section 16(4) cut-off, and are then removed. Accept them before you file the return that should carry them.

What if my supplier uploads a 2025-26 invoice after 30 November? It goes to the "ITC Not Available" section of your GSTR-2B and the credit cannot be claimed. The law gives no route to recover it, so any remedy lies in your contract with the supplier.

Is GSTR-9 required if turnover is up to ₹2 crore? No. Notification 15/2025-Central Tax exempts a registered person with aggregate turnover up to ₹2 crore from the annual return, from 2024-25 onwards. For such a business, 30 November is the only limit.

Does filing GSTR-9 early cut the time to claim ITC? Yes. The limit is 30 November or the date you file the annual return, whichever is earlier. File GSTR-9 only after the last credit is claimed.

Has the 57th GST Council changed the ITC time limit? No. It recommended amending sections 16, 37 and 39 to align the return deadlines with the time limit. Until the Act is amended, 30 November stands.

The law is as in force on 28 October 2026. State GST Acts carry the same time limit. The 57th Council's recommendations are not yet law. This explains the rules; it is not advice on any business's credit position.