Minimum Alternate Tax (MAT)

Minimum Alternate Tax applies when the tax payable by an eligible company under the normal provisions of the Income-tax Act is lower than the MAT calculated on its book profit.

• MAT is governed by Section 115JB of the Income-tax Act, 1961.
• It is calculated on book profit rather than regular taxable income.
• The base MAT rate is 15% of book profit.
• Applicable surcharge and health and education cess are added to the base MAT amount.
• Book profit is determined after making prescribed additions and deductions to the net profit.
• MAT credit is available when the MAT paid is higher than the regular tax liability.
• Eligible MAT credit can be carried forward for up to 15 assessment years.

• MAT does not apply to certain companies that have opted for specified concessional tax regimes, subject to applicable conditions.

  
  
  

Minimum Alternate Tax is a provision under Section 115JB of the Income-tax Act, 1961. It applies to certain companies when the income tax payable under the normal provisions is lower than the MAT calculated on their book profit.
Book profit is based on the net profit shown in the company’s profit and loss account prepared according to the applicable provisions of the Companies Act. Prescribed additions and deductions are then made to arrive at the book profit for MAT purposes.
A company generally calculates its tax liability using two methods:

• Tax payable under the normal provisions of the Income-tax Act
• MAT payable on book profit under Section 115JB

The company pays the higher of the two amounts. Therefore, MAT becomes relevant only when the MAT liability is higher than the tax calculated under the normal provisions.
The base MAT rate is 15% of book profit. Applicable surcharge and health and education cess are added to this amount.
MAT does not apply uniformly to every company. For example, companies that have opted for certain concessional corporate tax regimes, such as those covered by Sections 115BAA or 115BAB, are generally not subject to MAT, provided they satisfy the applicable conditions.
 

The calculation begins with the net profit shown in the company’s profit and loss account. The company must then make the additions and deductions prescribed under Section 115JB.

The basic formula is:

Book profit = Net profit as per the profit and loss account + prescribed additions − prescribed deductions

Once book profit has been determined, MAT is calculated as follows:

Base MAT liability = Book profit × 15%

Applicable surcharge and a 4% health and education cess are then added to the base MAT liability.

Certain amounts may have to be added back when calculating book profit, particularly when they have been debited to the profit and loss account. 

These may include:

• Income tax paid or payable
• Amounts transferred to specified reserves
• Provisions for unascertained liabilities
• Provisions for losses of subsidiary companies
• Dividends paid or proposed
• Depreciation debited to the profit and loss account
• Expenditure related to certain exempt income
• Deferred tax and related provisions, where applicable

Similarly, certain amounts may be deducted from the net profit when permitted under Section 115JB. 

These may include:

• Eligible exempt income credited to the profit and loss account
• Amounts withdrawn from specified reserves or provisions
• Permitted depreciation adjustments
• The lower of brought-forward book loss or unabsorbed depreciation
• Eligible deferred tax adjustments
• Other deductions expressly permitted under the provision

Not every exempt income or accounting adjustment is automatically deductible. Each item must satisfy the conditions stated under Section 115JB.

After calculating MAT, the company compares it with the tax payable under the normal provisions. The higher amount becomes the company’s tax liability for that assessment year.

MAT credit arises when a company pays MAT because its MAT liability is higher than its regular income-tax liability.
The credit represents the difference between the MAT paid and the tax payable under the normal provisions.
The formula is:
MAT credit = MAT paid − Regular income-tax liability
For example, suppose a company’s regular tax liability is ₹7 lakh while its MAT liability is ₹9 lakh. The company must pay ₹9 lakh, and the difference of ₹2 lakh may become available as MAT credit, subject to the applicable provisions.
MAT credit can be carried forward for up to 15 assessment years immediately following the year in which it arises.
The company may use this credit in a future year when its regular income-tax liability becomes higher than its MAT liability. However, the amount of credit used cannot reduce the tax payable below the MAT amount for that year.
For instance, if regular tax in a later year is ₹12 lakh and MAT is ₹9 lakh, the maximum MAT credit that may be used is ₹3 lakh. The company would still have to pay at least ₹9 lakh.
MAT credit is not ordinarily available as a separate cash refund. It can only be adjusted against eligible tax liability in future years. Any credit remaining unused after the prescribed carry-forward period generally lapses.
Companies should maintain accurate records of MAT paid, credit generated, credit utilised and the balance carried forward.
 

Consider a company with the following financial information:

In this example, the adjusted book profit is ₹54 lakh. Applying the 15% base MAT rate results in a tax amount of ₹8.10 lakh.

After adding the 4% health and education cess, the MAT liability becomes ₹8.424 lakh, excluding any surcharge that may apply.

The company must compare this amount with its tax liability under the normal provisions. If regular tax is lower than ₹8.424 lakh, MAT will generally be payable. If regular tax is higher, the company will pay the regular tax amount.

The illustration is simplified and does not cover every adjustment that may apply under Section 115JB. Actual calculations depend on the company’s financial statements, tax regime, deductions and applicable statutory provisions.

Minimum Alternate Tax ensures that eligible companies reporting book profits pay a minimum level of tax even when deductions, exemptions or incentives reduce their regular taxable income. It is calculated at a base rate of 15% of adjusted book profit, along with applicable surcharge and cess. Companies must compare MAT with their regular income-tax liability and pay the higher amount. Proper calculation of book profit and careful tracking of MAT credit can help companies meet their tax obligations accurately.