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What is Minimum Alternate Tax (MAT)?

Minimum Alternate Tax (MAT) ensures that companies pay a minimum amount of tax, even when their taxable income is reduced by various exemptions or deductions. It prevents zero-tax situations and maintains equity among taxpayers. MAT applies primarily to companies with large book profits but low or nil taxable income under regular provisions.

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Understanding MAT

Before diving into the calculation, it’s important to understand the concept, its purpose, and which companies fall under its purview. MAT helps bridge the gap between accounting profits and taxable profits to ensure fair taxation.

Definition and Purpose of MAT

Minimum Alternate Tax is a provision under Section 115JB of the Income Tax Act, 1961. It mandates companies to pay a fixed percentage of their book profit as tax, regardless of deductions or incentives claimed under other sections. The objective is to ensure that every profitable company contributes a fair share of tax to the government, even if their taxable income is low due to exemptions.

Which Companies Are Liable to Pay MAT

MAT applies to:

  • All domestic and foreign companies having taxable income in India.

dCompanies whose income under normal provisions is lower than 15% of book profit.
The current MAT rate stands at 15% of book profit (plus surcharge and cess). However, companies located in an International Financial Services Centre (IFSC) that earn income in convertible foreign exchange are subject to 9% MAT.

How to Calculate MAT

MAT calculation is based on book profits as per the company’s financial statements, adjusted for certain additions and deletions. The idea is to align accounting income with taxable income for a minimum threshold of tax payment.

Additions to Net Profit

To arrive at book profit, the following items are added back to the company’s net profit:

  • Income tax paid or payable, and the provision for it.
  • Amounts set aside for unascertained liabilities.
  • Provisions for losses of subsidiary companies.
  • Deferred tax and its provision.
  • Expenditure related to exempt income under Section 10.

These additions ensure that any item reducing the taxable profit artificially is neutralized.

Deletions from Net Profit

Certain items are subtracted from the net profit to arrive at book profit:

  • Income exempt under Section 10 (except 10(38)).
  • Withdrawals from reserves or provisions.
  • Profits from units in SEZs eligible for deduction under Section 10AA.
  • Brought-forward loss or unabsorbed depreciation (whichever is less).
  • Income from share of AOP or BOI.

These deletions adjust for items that shouldn’t form part of the minimum taxable base.

Computation of Book Profit

Book Profit = Net Profit (as per P&L Account) + Additions – Deletions

After determining the book profit, the MAT liability is calculated as:
MAT = 15% of Book Profit + Surcharge + 4% Health and Education Cess

Example:
If a company’s book profit is ₹1 crore, the MAT liability will be ₹15 lakh + surcharge and cess, irrespective of its taxable income under normal provisions.

MAT Credit

One of the key aspects of MAT is that companies paying higher tax under MAT can adjust it in future years through MAT credit. This ensures fairness and avoids double taxation over multiple assessment years.

What is MAT Credit?

When the tax paid under MAT exceeds the regular income tax payable, the excess amount is known as MAT Credit. This credit can be used in future years when the company’s regular tax liability becomes higher than MAT.

For instance, if a company pays ₹20 lakh under MAT and its normal tax liability is ₹15 lakh, the excess ₹5 lakh becomes MAT credit.

Carry Forward Mechanism for MAT Credit

The MAT credit can be carried forward and adjusted in future years against regular tax liability. However, it can only be used when the normal income tax payable exceeds the MAT payable in that year.

Example:

  • AY 2025–26: MAT paid ₹20 lakh, regular tax ₹15 lakh → ₹5 lakh MAT credit earned.
  • AY 2026–27: Regular tax ₹25 lakh, MAT ₹18 lakh → MAT credit utilized ₹7 lakh (limited to the difference between regular tax and MAT).

Carry Forward Period for MAT Credit

Under current provisions, MAT credit can be carried forward for 15 assessment years. After this period, any unutilized credit lapses. It is important for companies to maintain a detailed record of MAT payments and credit utilization for accurate reconciliation in future years.

Filing Requirements for MAT

Filing MAT-related information is part of the company’s annual tax compliance. The details must be reported in the ITR-6 Form, supported by audited financial statements and reconciliation schedules.

Documents Required

  • Audited financial statements (P&L Account, Balance Sheet).
  • Computation of book profits as per Section 115JB.
  • Details of additions and deletions made to net profit.
  • Proof of MAT credit carried forward and utilized.
  • Tax audit report (Form 3CA/3CB and Form 3CD, where applicable).

Filing Procedure

  1. Prepare financial statements and compute book profit.
  2. Calculate MAT liability using 15% (or 9% for IFSC units) on book profit .
  3. Reconcile MAT with regular income tax to determine credit, if any.
  4. Fill in MAT schedules while filing ITR-6.
  5. E-verify the return using a Digital Signature Certificate (DSC).

Key Compliance Dates

  • Audit Report Filing Date: Usually 30 September of the assessment year.
  • ITR-6 Filing Date: Generally 31 October for companies subject to audit.
  • Ensure both filings are completed before due dates to avoid penalties or disallowance of MAT credit.

Conclusion

Minimum Alternate Tax (MAT) ensures that every profitable company contributes a minimum amount to the exchequer. It balances equity in taxation and prevents misuse of deductions or exemptions.

By calculating MAT correctly, maintaining documentation, and claiming MAT credit efficiently, companies can minimize tax burdens in future years. Accurate MAT compliance not only demonstrates good corporate governance but also avoids legal scrutiny or disallowances.

For businesses, understanding MAT isn’t just about compliance, it’s a smart strategy for optimizing tax planning and ensuring consistent financial management.

Mohammad Abid Khan
Chartered Accountant
MRN No.: 468413
City: Varanasi

I’m CA Mohammad Abid Khan, a Chartered Accountant based in Varanasi with 10 years of experience. I specialize in GST and Income Tax, helping individuals and businesses stay compliant and optimize their taxes. I hold B.Com and M.Com degrees and enjoy simplifying finance through practical, easy-to-understand content.

Frequently Asked Questions

  • What is MAT and who is liable to pay it?

    MAT stands for Minimum Alternate Tax. It applies to all domestic and foreign companies whose tax liability under normal provisions is less than 15% of book profit.

  • How is MAT calculated for companies?

    MAT is calculated as 15% of book profit, adjusted with surcharge and cess. Book profit is derived by adding and deleting specific items from the net profit as per the Profit & Loss Account.

  • What is MAT credit and how is it used?

    MAT credit is the excess tax paid under MAT compared to regular income tax. It can be carried forward and used to offset future tax liabilities when regular tax exceeds MAT.

  • Can MAT credit be carried forward to future years?

    Yes, companies can carry forward MAT credit for up to 15 assessment years from the year in which it is earned.

  • What are the filing requirements for MAT?

    Companies must file ITR-6, include MAT computation schedules, and verify using DSC. Supporting documents like audited statements and tax audit reports must also be maintained.