ITC Reversal Calculator

ITC reversal is required under Section 17(1) read with Rule 42/43 when: (1) inputs/input services are used partly for taxable and partly for exempt supplies, (2) inputs are used for personal purposes, (3) goods/services are used for non-business purposes, (4) there is shortage in stock or capital goods, or (5) the supplier has not paid tax. The most common scenario is partial use for exempt supplies where proportionate ITC must be reversed.

Under Rule 42, ITC reversal is calculated as: Reversal Amount = Total ITC × (Exempt Turnover / Total Turnover). Common credit (used for both taxable and exempt supplies) is first identified, then the amount attributable to exempt supplies is reversed. The formula ensures that only ITC proportionate to taxable business use is retained, while the rest is reversed along with interest if applicable.

Rule 42 applies to ITC on inputs and input services — it calculates reversal based on the ratio of exempt turnover to total turnover. Rule 43 applies to ITC on capital goods — it calculates reversal over the useful life of the capital goods (5 years from the date of invoice). For capital goods, the ITC is spread over 60 months, and the reversal for each year is based on the exempt-to-total turnover ratio.

Yes, interest is payable on ITC reversal if the reversal is done after the due date of the return for the period in which the ITC was wrongly claimed. The interest rate is 24% per annum under Section 50(3). However, if the reversal is done voluntarily in the same return period or through FORM GSTR-3B before any notice, interest may not apply.

Yes, under Rule 42(2)(ii), if the proportion of exempt supplies decreases in a subsequent year, the taxpayer can re-claim the ITC that was reversed earlier. Similarly, under Rule 43, if capital goods previously used for exempt supplies are now used for taxable supplies, the reversed ITC can be claimed back. This ensures taxpayers are not permanently disadvantaged by temporary changes in business operations.