GST input tax credit (ITC) must be reversed when a statutory condition for keeping it is no longer met, or when the credit is attributable to an excluded use or category. Some reversals are permanent; others, such as credit reversed because a supplier remains unpaid beyond 180 days, may be reclaimed after the relevant condition is met. The correct treatment depends on the tax period, the supply and its use, supporting records, and the law and return instructions then in force.
Which situations can require an ITC reversal?
The Central GST framework does not make every credit shown on an invoice an unconditional entitlement. Sections 16 to 18 of the CGST Act and the related rules deal with eligibility conditions, blocked or apportioned credit, and specified changes in circumstances. The table gives a practical overview; it is not a substitute for checking the provision that applies to a particular transaction.
| Situation | General treatment | Can the credit be reclaimed? |
|---|---|---|
| Supplier not paid within 180 days | Reverse the portion relating to the amount unpaid, with interest under the prescribed mechanism. Section 16 and Rule 37 of the CGST framework address this case. | Potentially, after payment and satisfaction of the applicable conditions. |
| Common inputs or services used for exempt supplies or non-business purposes | Attribute or apportion credit under Rule 42; Rule 43 addresses relevant capital goods. The calculation depends on use and the prescribed method. | Not a simple temporary reversal; treatment depends on the relevant-period calculation and rules. |
| Credit in a blocked category | Do not treat the credit as eligible unless a statutory exception applies. Section 17(5) contains the categories and qualifications. | Not ordinarily, unless the facts bring the credit within an exception. |
| Personal use, or goods lost, stolen, destroyed, written off, gifted or given away as free samples | Credit may be restricted or ineligible under section 17, depending on the facts and statutory wording. | No automatic reclaim is established for these cases. |
| Specified changes in registration, tax status or business ownership | Section 18 provides for credit or adjustment in specified circumstances, subject to its conditions. | Depends on the particular provision and facts. |
These categories are not interchangeable. In particular, a temporary reversal does not turn an otherwise blocked credit into an eligible one. CBIC Circular 170/02/2022-GST distinguishes permanent reversals from reversals that may be reclaimed; the relevant statutory provision determines which applies.
What happens if you have not paid your supplier?
Section 16(2) of the CGST Act provides a 180-day payment condition: if the recipient does not pay the supplier the value of the supply plus tax within 180 days from the invoice date, the ITC availed is to be added to output tax liability in the prescribed manner, with interest. Rule 37 addresses the mechanics, including reversal proportionate to the amount that remains unpaid. The cited second proviso excludes reverse-charge supplies from this condition.
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For a partly paid invoice, the relevant amount is generally the unpaid portion, not automatically the entire invoice. Reconcile invoice balances against actual payment dates and amounts; an invoice marked “open” in accounting software does not by itself establish how much must be reversed. The applicable rule and return instructions for the tax period govern the calculation and filing treatment.
Once the supplier is paid, the recipient may be able to avail the credit again, subject to the applicable conditions. Do not treat payment alone as proof that every requirement for re-availment is satisfied: retain the invoice, payment evidence, and records showing the original availment and reversal.
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How do exempt supplies and non-business use affect credit?
Section 17 limits credit to the portion attributable to business use and provides for apportionment where inputs or services relate to both taxable and exempt supplies. Exclusively exempt or non-business inputs are not eligible. For common inputs and input services, Rule 42 sets out an attribution mechanism; Rule 43 provides a separate approach for relevant capital goods.
The CBIC Rules text includes a five-per-cent attribution for common credit used partly for non-business purposes and a turnover-linked allocation for exempt supplies. Rule 43 uses a five-year useful-life premise for relevant common capital goods. These are parameters within prescribed computations, not stand-alone percentages to apply to an invoice without assessing the taxpayer’s use, records, period and operative rule text.
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Keep the basis for the calculation: how credit was identified as exclusively attributable or common, the relevant turnover and use figures, and the period to which the computation relates. If a capital good is involved, distinguish it from ordinary inputs and input services rather than applying the same calculation by default.
Which credits are blocked or otherwise ineligible?
Section 17(5) lists blocked-credit categories, but the statutory qualifications and exceptions matter. The categories in the CBIC Act text include specified motor vehicles and certain food, catering, membership, insurance and personal-consumption expenses, among other items. A label alone is not enough to decide eligibility: the specific category, business use and any applicable exception must be examined.
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The same section identifies goods lost, stolen, destroyed, written off, or disposed of by gift or free sample as cases where credit is restricted. A business should not assume that describing an item as a promotion, staff expense or operational cost resolves the GST treatment. Check the provision against the actual transaction and supporting documents before claiming or retaining the credit.
What special rules apply to capital goods and business changes?
Capital goods used partly for taxable and partly for exempt or non-business purposes are subject to Rule 43’s separate attribution approach. Section 18 also addresses specified changes in registration or tax status and certain business transfers; the entitlement or adjustment depends on the particular event and the section’s conditions.
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A CBIC sectoral FAQ gives a narrow banking example: for a bank’s section 18(6) reversal on capital goods, the reversal applies only to credit actually availed. Where the bank has elected the 50% method, the reversal is proportionate to that 50% actually availed. This example is specific to the banking context; it is not a general calculation shortcut for other taxpayers.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How should a reversal or reclaim be reported in GSTR-3B?
CBIC Circular 170/02/2022-GST describes the following Table 4 treatment. Confirm the return instructions and portal behavior applicable to the filing period before filing, as return procedures can change.
- Table 4(B)(1): permanent reversals and ineligible ITC.
- Table 4(B)(2): temporary reversals that may be reclaimed after the relevant conditions are satisfied. The circular gives Rule 37 and section 16(2)(b) and (c) as examples.
- Table 4(A)(5) and Table 4(D)(1): the circular says qualifying reclaims are reported in Table 4(A)(5) and also disclosed in Table 4(D)(1).
- Table 4(C): the circular describes net ITC as Table 4(A) minus Tables 4(B)(1) and 4(B)(2).
Keep a reconciliation linking the original ITC claim to the reason for reversal, the return in which it was reversed, and evidence supporting any later reclaim. That trail helps distinguish an eligible reclaim from a fresh or unsupported claim.
What to check before reversing or reclaiming ITC
- Identify the legal reason for the adjustment: an unmet claim condition, non-payment, blocked credit, exempt or non-business use, or a specified event under section 18.
- Match the credit to invoices, payment records, relevant returns and the use of the goods or services.
- For common credit, establish the correct attribution period and calculation under Rule 42 or Rule 43, as applicable.
- For a possible reclaim, verify that the condition permitting re-availment has actually been satisfied and retain evidence of when it was satisfied.
- Check the current CGST Act, Rules, notifications and GSTR-3B instructions for the tax period. Older CBIC Act or Rules text and the 2022 circular may not reflect every later amendment or current portal instruction.
The provisions discussed here are central CGST guidance. State or Union Territory GST counterparts, later amendments, litigation and taxpayer-specific facts can affect the result. For a material or disputed balance, have an Indian GST professional review the invoices, payment history, returns, use records and relevant tax period.
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