The 25.17% Effective Tax Rate: How It Is Calculated
Under Section 115BAA of the Income Tax Act 1961 (introduced in September 2019), a domestic company can opt for a concessional tax rate of 22% on total income if it gives up certain deductions (Section 80IC, 80IE industrial area deductions) and exemptions. The 22% rate applies to base taxable income.
Surcharge: 10% of the base tax (22%) for domestic companies with income above INR 1 crore. For most GCCs with taxable income above INR 1 crore, the surcharge applies: 22% x (1 + 10% surcharge) = 24.2%. Health and Education Cess: 4% on (tax + surcharge): 24.2% x (1 + 4% cess) = 25.168%, rounded to 25.17%.
This 25.17% is the effective rate for a GCC opting for Section 115BAA. Companies not opting for the new regime (staying on the old regime) continue at 30% plus surcharge and cess, but can claim additional deductions. For most GCCs without large industrial area deductions, Section 115BAA is the better choice.
Corporate tax rate calculation for a GCC opting for Section 115BAA
| Component | Rate | Calculated Amount (on INR 100 taxable income) |
|---|---|---|
| Base tax (Section 115BAA) | 22% | INR 22.00 |
| Surcharge (income above INR 1 crore) | 10% of tax | INR 2.20 |
| Health & Education Cess | 4% of (tax + surcharge) | INR 0.97 |
| Effective total tax | 25.17% | INR 25.17 |
Minimum Alternate Tax (MAT)
Section 115JB of the Income Tax Act imposes a Minimum Alternate Tax (MAT) at 15% of 'book profit' if the tax payable under regular provisions is less than 15% of book profit. 'Book profit' is the net profit as per the profit and loss account, with specific additions and deductions defined in Explanation 1 to Section 115JB.
MAT is relevant for GCCs that have large special deductions (like Section 10AA SEZ exemptions or accelerated depreciation) that reduce the regular tax liability below 15% of book profits. The MAT paid can be carried forward as MAT credit for 15 years and set off against regular tax when regular tax exceeds MAT in a future year.
For a GCC operating in an SEZ with 100% income tax exemption (Section 10AA), the taxable income under regular provisions may be zero, but book profit may be substantial. In that case, MAT at 15% of book profit applies. The MAT credit generated in the exempt period can be used once the SEZ exemption period ends.
Advance Tax and Return Filing Deadlines
Companies must pay advance tax on their estimated annual tax liability in four installments: 15% by 15 June, 45% by 15 September, 75% by 15 December, and 100% by 15 March. 'Advance tax liability' is the estimated annual tax minus TDS received and credits. If advance tax is underpaid, interest under Sections 234B and 234C applies at 1% per month.
The income tax return for a company subject to audit (which includes all GCCs) is due by 31 October of the assessment year. For a company with international transactions, Form 3CEB (transfer pricing report) must also be filed by 31 October (or 30 November if the company is part of an international group that prepares a country-by-country report). Late filing of the return attracts a fee of INR 10,000 under Section 234F.
Section 115BAA election cannot be reversed once made
A company that elects Section 115BAA (the 22% concessional rate regime) cannot revert to the old regime in a subsequent year. This decision should be made after carefully analyzing the company's long-term deduction profile. Most GCCs benefit from the 115BAA regime because they do not have the industrial area deductions that are forfeited, but verify with your CA before election.