Minimum Alternate Tax (MAT) Explained: Section 115JB

Short answer: Minimum Alternate Tax (MAT) is a tax levied on companies that have high book profits but low taxable income due to various exemptions and deductions under the Income-tax Act. Governed by Section 115JB, it ensures such companies pay a minimum amount of tax, currently set at 15% of their 'book profit'. The excess tax paid as MAT can be carried forward as a credit for future years.

What is Minimum Alternate Tax (MAT) under Section 115JB?

MAT is a provision in the Income-tax Act, 1961, designed to bring 'zero-tax companies' into the tax net. Often, companies show substantial profits in their profit and loss accounts prepared for shareholders but report very low or nil taxable income for income tax purposes by leveraging various deductions, exemptions, and high depreciation allowances. Section 115JB imposes a floor on the tax a company must pay, ensuring a minimum contribution to the exchequer. If the tax calculated under normal provisions is lower than the MAT, the company must pay the MAT amount.

Who is liable to pay MAT?

Every company, whether public or private, Indian or foreign, is liable to pay MAT if their regular income tax liability is less than 15% (plus applicable surcharge and cess) of their book profit. This provision applies irrespective of the company's size or sector. However, it is important to note that MAT provisions do not apply to individuals, Hindu Undivided Families (HUFs), partnership firms, or Limited Liability Partnerships (LLPs). LLPs and other non-corporate taxpayers are subject to a similar concept called Alternate Minimum Tax (AMT).

How is MAT calculated?

MAT is calculated at a flat rate of 15% on the company's 'book profit'. A lower rate of 9% applies to units located in an International Financial Services Centre (IFSC). To this MAT amount, applicable surcharge and health and education cess are added. The process involves two separate tax computations:

1. Normal Tax Liability: Calculate the company's total income and tax liability as per the regular provisions of the Income-tax Act.
2. MAT Liability: Calculate 15% of the company's 'book profit' as determined under Section 115JB.

The company's final tax liability will be the higher of these two amounts. Every company liable for MAT must furnish a report in Form 29B from a Chartered Accountant, certifying that the book profit has been computed correctly.

What is Book Profit for MAT purposes?

Book profit is the starting point for calculating MAT and is not the same as the net profit shown in the financial statements. It is calculated by taking the net profit as per the company's Profit and Loss Account (prepared in accordance with Schedule III of the Companies Act, 2013) and making specific adjustments as prescribed under Section 115JB.

Additions to Net Profit	Deductions from Net Profit
Income tax paid or payable, and any provision for it.	Amount withdrawn from any reserve or provision, if credited to the P&L account.
Amounts carried to any reserves.	Income exempt from tax (e.g., specific incomes under Section 10).
Provisions for unascertained liabilities (e.g., general provisions for bad debts).	Amount of depreciation debited to the P&L account.
Provision for losses of subsidiary companies.	Amount of depreciation (excluding revaluation depreciation) allowable as per the books.
Depreciation debited to the P&L account.	Brought forward business loss or unabsorbed depreciation as per books of account, whichever is lower.
Deferred tax provision and the amount of deferred tax.	Profit of a sick industrial company until its net worth becomes zero.
Provision for diminution in the value of any asset.	Deferred tax credit, if any, credited to the P&L account.

What is MAT Credit under Section 115JAA?

MAT credit is a tax relief mechanism. When a company pays MAT because it is higher than its normal tax liability, the difference between the MAT paid and the normal tax payable is called MAT Credit. This credit can be carried forward for up to 15 subsequent assessment years. In a future year when the company's normal tax liability is higher than its MAT liability, it can use this credit to offset its tax payment. The amount of credit that can be utilized in any year is limited to the difference between the normal tax and the MAT for that year.

Worked example

Let's consider 'Bengaluru Innovations Pvt. Ltd.' a software company, for the Financial Year 2025-26.

• Net Profit as per P&L Account: ₹80,00,000
• Taxable Income as per normal IT provisions: ₹45,00,000
• Depreciation debited to P&L Account: ₹12,00,000
• Provision for doubtful debts (an unascertained liability): ₹3,00,000
• Amount transferred to General Reserve: ₹5,00,000

Step 1: Calculate Book Profit

• Net Profit as per P&L: ₹80,00,000
• Add: Depreciation debited to P&L: + ₹12,00,000
• Add: Provision for doubtful debts: + ₹3,00,000
• Add: Transfer to General Reserve: + ₹5,00,000
• Less: Depreciation allowable as per books (assuming same as debited for simplicity, excluding revaluation part): - ₹12,00,000
• Adjusted Book Profit: ₹80,00,000 + ₹3,00,000 + ₹5,00,000 = ₹88,00,000

Step 2: Calculate MAT Liability

• MAT @ 15% on Book Profit: 15% of ₹88,00,000 = ₹13,20,000
• Add: Surcharge (assuming domestic company, income < ₹1 Cr, so Nil)
• Add: Health & Education Cess @ 4%: 4% of ₹13,20,000 = ₹52,800
• Total MAT Liability: ₹13,20,000 + ₹52,800 = ₹13,72,800

Step 3: Calculate Normal Tax Liability

• Taxable Income: ₹45,00,000
• Corporate Tax @ 22% (assuming the company opted for Sec 115BAA): 22% of ₹45,00,000 = ₹9,90,000
• Add: Surcharge (Nil)
• Add: Health & Education Cess @ 4%: 4% of ₹9,90,000 = ₹39,600
• Total Normal Tax Liability: ₹9,90,000 + ₹39,600 = ₹10,29,600

Step 4: Determine Final Tax Payable and MAT Credit

• Final Tax Payable is the higher of MAT Liability (₹13,72,800) and Normal Tax Liability (₹10,29,600).
• Tax Payable by Bengaluru Innovations Pvt. Ltd.: ₹13,72,800
• MAT Credit to be carried forward (Sec 115JAA): ₹13,72,800 - ₹10,29,600 = ₹3,43,200

Common mistakes

1. Applying MAT to Non-Corporate Entities: A frequent error is to apply MAT provisions to LLPs or partnership firms. These entities are subject to Alternate Minimum Tax (AMT), not MAT.
2. Incorrect Calculation of Book Profit: Failing to add back non-allowable provisions (like provision for warranty, gratuity, or bad debts) or deferred tax provisions is a common mistake that understates book profit.
3. Forgetting to File Form 29B: Every company to whom MAT provisions apply must file a report from a Chartered Accountant in Form 29B. Failure to do so can lead to non-compliance and potential penalties.
4. Neglecting MAT Credit: Companies often forget to track their available MAT credit and fail to set it off in years where their normal tax liability exceeds the MAT liability, resulting in excess tax payment.
5. Using IT Act Depreciation for Book Profit: The depreciation to be added back and deducted while computing book profit is the one charged in the books of account, not the depreciation allowable under the Income-tax Act.

How SP & SC helps

Navigating the complexities of Minimum Alternate Tax requires careful calculation and strategic planning. At SP & SC, our team of Chartered Accountants provides comprehensive tax consultation and compliance services for companies. We assist in the accurate computation of book profit and MAT liability, prepare and file the mandatory Form 29B, and help you file corporate tax returns (ITR-6). We also help you maintain your MAT credit register and advise on its optimal utilization to ensure tax efficiency. For expert guidance on all your corporate tax matters, explore our tax consultation services.

Frequently asked questions

H3: Does MAT apply to LLPs?

No, MAT under Section 115JB applies only to companies. Limited Liability Partnerships (LLPs) and other non-corporate taxpayers are subject to similar provisions called Alternate Minimum Tax (AMT) under Section 115JC.

H3: What is the current MAT rate?

As of AY 2026-27, the MAT rate is 15% of the book profit. For companies that are units of an International Financial Services Centre (IFSC) and derive their income solely in convertible foreign exchange, a concessional rate of 9% applies. Surcharge and cess are applicable on top of this rate.

H3: Can MAT credit be carried forward indefinitely?

No, the MAT credit generated can be carried forward for a maximum period of 15 assessment years immediately succeeding the assessment year in which the credit was generated. If it is not utilized within this period, the credit lapses.

H3: Is a report from a Chartered Accountant required for MAT?

Yes, any company to which the provisions of Section 115JB apply is required to obtain a report from a Chartered Accountant in Form 29B. This report certifies that the book profit has been computed in accordance with the provisions of the Act and must be furnished electronically along with the income tax return.

H3: Does MAT apply to companies in liquidation?

Yes, the provisions of MAT apply to every company, including a company in liquidation. However, any company against which an application for corporate insolvency resolution process has been admitted by the Adjudicating Authority under the Insolvency and Bankruptcy Code, 2016, is exempt from MAT.

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