ITC Reversal if Supplier Not Paid Within 180 Days

Short answer: If you avail Input Tax Credit (ITC) on an inward supply but fail to pay the supplier the full invoice value within 180 days from the invoice date, you must reverse the ITC claimed. This reversal must be accompanied by interest payment at 18% per annum from the date of availing the credit until the date of reversal. You can reclaim this ITC once you make the payment to the supplier.

What is the 180-day rule for ITC?

This rule stems from the second proviso to Section 16(2) of the Central Goods and Services Tax (CGST) Act, 2017. It's a condition attached to the availment of ITC. The law states that if a recipient of goods or services fails to pay the supplier the amount towards the value of the supply along with the tax payable thereon within 180 days from the date of issue of the invoice, the ITC availed by the recipient will be added to their output tax liability, along with interest.

How is the 180-day period calculated?

The 180-day countdown begins from the date the supplier issues the tax invoice. It is not calculated from the date you receive the goods, the date you book the invoice in your accounts, or the date you file your GSTR-3B to claim the credit. It is crucial to track payables based on the invoice date to ensure compliance with this provision.

What needs to be paid back when reversing ITC?

When you reverse ITC under this rule, you must pay back two components:

1. The ITC Amount: The entire amount of ITC you claimed on the unpaid invoice must be reversed. If you have made a partial payment, you must reverse the ITC in proportion to the unpaid amount.
2. Interest: You are liable to pay interest under Section 50 of the CGST Act. The interest is calculated at 18% per annum on the amount of ITC reversed. The interest period starts from the date the ITC was availed (i.e., the date of filing the GSTR-3B in which credit was claimed) and ends on the date the reversal amount is paid.

Can the reversed ITC be reclaimed?

Yes, you can reclaim the ITC. The third proviso to Section 16(2) of the CGST Act allows the recipient to re-avail the credit once the payment for the invoice is made to the supplier. There is currently no time limit prescribed for this re-availment, unlike the time limit for availing fresh ITC. You can reclaim the credit in your GSTR-3B for the month in which you finally settle the dues with your supplier.

How is this reported in GSTR-3B?

Correct reporting in your monthly GSTR-3B return is essential. Here is a guide to the relevant tables:

Action	GSTR-3B Table	Reporting Detail
Initial ITC Claim	Table 4(A)(5) - All other ITC	Report the ITC from the supplier's invoice in the month of receipt.
ITC Reversal	Table 4(B)(2) - Others	Report the amount of ITC being reversed due to non-payment within 180 days.
Interest Payment	Paid via Electronic Cash Ledger	Interest must be calculated and paid, typically using Form DRC-03.
ITC Reclaim	Table 4(A)(5) - All other ITC	Reclaim the ITC in the month you pay the supplier.
Reporting Reclaim	Table 4(D)(1) - ITC reclaimed which was reversed under Rule 37 in earlier tax period	This is a disclosure field where you report the amount from the previous step.

Are there any exceptions to the 180-day rule?

Yes, Rule 37 of the CGST Rules carves out a few specific exceptions where this payment condition does not apply. The requirement to pay the supplier within 180 days is not applicable for:

1. Supplies under Reverse Charge Mechanism (RCM): Since the recipient pays the tax directly to the government, this condition is not relevant.
2. Deemed Supplies Without Consideration: Transactions specified in Schedule I of the CGST Act, which are treated as supplies even without consideration (e.g., permanent transfer of business assets where ITC has been availed), are excluded.
3. Additions to Value by Recipient: Any additions made to the value of supplies by the recipient that are not part of the supplier's invoice are also excluded from this rule.

Worked example

Let's take a Bengaluru-based scenario:

• Recipient: 'Bengaluru Infra Solutions Pvt. Ltd.'
• Supplier: 'Mysore Cement Corp.'
• Invoice Date: 15th October 2025
• Invoice Value: ₹20,00,000 (value) + 18% GST (₹3,60,000). Total payable: ₹23,60,000.

1. ITC Availment: Bengaluru Infra claims ITC of ₹3,60,000 in its GSTR-3B for October 2025, filed on 20th November 2025.

2. 180-Day Deadline: The 180-day period from 15th October 2025 ends on 12th April 2026. As of this date, Bengaluru Infra has not paid Mysore Cement.

3. Reversal & Interest: In their GSTR-3B for April 2026 (filed by 20th May 2026), Bengaluru Infra must reverse the ITC.

   • ITC Reversal: ₹3,60,000 is reported in Table 4(B)(2) of the GSTR-3B.
   • Interest Calculation: Interest is due from the date of availment (20th Nov 2025) to the date of payment of the reversed amount (let's assume 20th May 2026). The period is 182 days.
   • Interest = ₹3,60,000 x 18% x (182 / 365) = ₹32,257. This amount must be paid in cash.

4. Final Payment & Reclaim: Bengaluru Infra finally pays the full ₹23,60,000 to Mysore Cement on 10th August 2026.

5. ITC Re-Availment: In its GSTR-3B for August 2026 (filed in September 2026), Bengaluru Infra can reclaim the ITC.

   • It will add ₹3,60,000 to its eligible ITC in Table 4(A)(5).
   • It will also report this reclaim as ₹3,60,000 in the disclosure Table 4(D)(1).

Common mistakes

1. Ignoring the Rule: Many businesses forget to track supplier payments against the 180-day timeline, leading to non-compliance discovered only during audits.
2. Forgetting Interest: Reversing the ITC without paying the mandatory 18% interest is a common error. Interest must be paid via the cash ledger.
3. Incorrect Period for Interest: Calculating interest from the invoice date instead of the date of ITC availment is wrong. The liability starts from when you took the benefit (availed credit).
4. Reclaiming ITC Prematurely: You cannot reclaim the reversed ITC based on a promise to pay. The credit can only be re-availed in the tax period when the payment is actually made to the supplier.
5. Proportional Reversal Ignored: For partial payments, businesses sometimes forget that the reversal should be proportionate to the unpaid invoice value, not the full amount.

How SP & SC helps

Navigating GST compliance, especially provisions like the 180-day payment rule, requires meticulous tracking and reporting. SP & SC Legal provides end-to-end GST Return Filing services. We help clients implement robust accounts payable tracking systems, ensure timely compliance with ITC reversals to minimize interest costs, handle accurate reporting in GSTR-3B, and manage all communications with the GST department. Our goal is to make your compliance seamless and penalty-proof.

Frequently asked questions

Q1: What happens if I have made a partial payment to the supplier?

If you have made a partial payment, you are required to reverse the ITC on a proportionate basis. As per Rule 37(2) of the CGST Rules, the amount of ITC to be reversed is proportionate to the amount of consideration not paid to the supplier.

Q2: How does this rule interact with the MSME 45-day payment rule?

The 180-day GST rule and the 45-day payment rule under the MSME Act are separate and have different consequences. You must comply with both. Failure to pay an MSME supplier within 45 days can lead to the disallowance of the expense under the Income-tax Act, whereas failure to pay any supplier within 180 days leads to GST ITC reversal and interest.

Q3: Do I still have to pay interest if I have a large balance in my electronic credit ledger?

Yes. The interest liability under Section 50 is mandatory and must be paid through the electronic cash ledger. You cannot use the balance in your credit ledger to discharge this interest liability. This has been clarified by law and upheld in judicial pronouncements.

Q4: Is there a time limit to reclaim the reversed ITC?

No, the CGST Act does not currently prescribe a time limit for reclaiming ITC that was reversed due to non-payment. You are eligible to reclaim the credit in the GSTR-3B of the month in which you make the full and final payment to the supplier, whenever that may be.

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Are you struggling with GST compliance, reconciliations, or responding to a notice about ITC? Share your documents with us for a confidential review and a written fixed-fee quote to handle the matter end-to-end. Contact SP & SC today via our website or on WhatsApp at +91 90356 74566.