Minimum Alternate Tax (MAT) — How It Works for Companies Under Section 115JB

Minimum Alternate Tax (MAT) under Section 115JB ensures that companies that report high book profits but pay low or no income tax (due to exemptions, deductions or carried-forward losses) pay at least a minimum amount of tax. If a company's normal tax liability is less than 15% of its "book profit," it must pay MAT at 15%. Here is the complete guide.

When Does MAT Apply?

MAT applies when a company's tax payable under the normal income tax provisions (after all deductions, exemptions and losses) is less than 15% of "book profit." In that case, the company pays MAT at 15% of book profit instead of the normal computed tax.

• Normal tax < MAT → Pay MAT (and claim MAT credit)
• Normal tax ≥ MAT → Pay normal tax (no MAT issue)

What is "Book Profit"?

Book profit is computed as the net profit shown in the P&L account, adjusted by adding back:

• Income tax provisions, deferred tax
• Reserves (except specific reserves)
• Provisions for bad debts not debited to P&L
• Depreciation charged in accounts
• Deductions claimed under Sections 10A, 10B, 10BA, 80HH, 80HHC, 80I, 80IA, etc.

And deducting depreciation as per Companies Act (not Income Tax Act), and brought-forward losses (lower of unabsorbed depreciation or carried-forward losses).

MAT Rate

• MAT rate: 15% of book profit (plus surcharge and cess as applicable)
• Effective MAT for domestic companies: 15% + 7% surcharge (if book profit exceeds ₹1 crore) + 4% cess = approximately 16.69% on book profit

MAT Credit — Section 115JAA

When a company pays MAT, it can claim a credit for the excess of MAT paid over normal tax liability. This "MAT credit" can be carried forward for 15 years and set off against the normal tax payable in future years (when normal tax exceeds MAT). This ensures that MAT is effectively an advance payment — not a permanent extra burden.

Companies Exempt from MAT

• Companies with zero or negative book profit
• Infrastructure companies and power generation companies (specific exemptions)
• Life insurance companies (separate MAT provisions)
• From AY 2024-25: Companies that have opted for the new concessional tax rate under Section 115BAA (22% for domestic companies) or 115BAB (15% for new manufacturing) are exempt from MAT

Conclusion

MAT ensures that profitable companies (by accounting standards) pay at least a minimum income tax — with a credit mechanism to ensure it's not a double burden. SPOTON handles company income tax computation, MAT determination and MAT credit carry-forward for businesses. Contact us for expert corporate tax services.