Direct Tax Basics: Constitution, Levy & Income Definition for CA Inter

Direct tax is the backbone of India's tax system, and the CA Inter Taxation paper expects you to answer with precision on its foundational principles. Three concepts anchor everything you'll study: where the power to tax comes from, what income means under the Act, and who must pay tax at what rate. Miss these, and you'll struggle with application questions later.

Constitutional Authority: Why Article 265 Matters

Before any tax is collected in India, there must be law. This is not theory—it is a constitutional guarantee.

Article 265 of the Constitution states a single, non-negotiable principle: no tax shall be levied or collected except by authority of law. This means:

• The government cannot collect tax by executive order, rule, or notification alone.
• Parliament must pass legislation (or a State Legislature, for taxes within their power).
• Tax must be levied according to the procedure and rate prescribed by that law.
• Any tax collected without such authority is illegal and recoverable.

In the exam, if you see a question asking why the Income-tax Act has constitutional backing, or why a tax cannot be levied arbitrarily, Article 265 is your anchor. It is also the reason why changes to tax rates or slabs require Parliamentary amendment—not just government notification.

Constitutional Distribution of Tax Powers

The Constitution divides the power to levy tax on income between Parliament and State Legislatures through the Seventh Schedule.

Entry 82 of the Union List (List I) gives Parliament the exclusive power to levy tax on income other than agricultural income. This is why the Income-tax Act, 1961 is a Central law, applicable across India.

State Legislatures have no power to levy tax on non-agricultural income. If a State tries to do so, it violates the Constitution. This distinction is tested in exam MCQs, often as a distractor against wrong answers about State Legislatures or the Concurrent List.

Income Under the Income-tax Act: The Statutory Definition

Not every receipt is income under the Income-tax Act. The Act defines income narrowly, and this definition is central to deciding what is taxable.

Section 2(5) defines "agricultural income" as:

• Any rent or revenue derived from land situated in India and used for agricultural purposes.
• This includes income from cultivation of crops, horticulture, or use of land for such purposes.
• It does NOT include salary paid by a farm as wages, dividend from an agricultural company, or interest on a loan to a farmer—these are income in the hands of the recipient, but not agricultural income.

The Income-tax Act then defines income as earnings—salary, profit, rent, dividend, interest—but excludes agricultural income (which falls under State tax laws where applicable). This distinction means:

• If you earn ₹10 lakh from agriculture, you may not pay income tax on it (State tax may apply instead).
• If you earn ₹10 lakh from business or salary, you pay income tax.

This is why questions test your ability to identify what is NOT income for direct tax purposes.

Capital vs. Income: The Fundamental Divide

The Income-tax Act taxes income, not capital. This distinction has profound exam consequences.

If you sell a house for ₹50 lakh and bought it for ₹40 lakh, you have a capital gain of ₹10 lakh. The Act taxes that gain (as capital gains, under different rules), but the ₹40 lakh you invested is not taxed as income when you get it back—it is a return of capital.

Similarly, if you receive an inheritance of ₹20 lakh, it is not income for tax purposes; it is capital. The Act explicitly exempts certain capital receipts.

In exam questions, when asked "what does the Income-tax Act tax?", the answer is always income, not capital. Casual capital receipts, windfalls, and returns of invested capital are treated separately or exempted.

Basic Exemption Limit and Tax Slabs (Current Structure)

To actually calculate tax, you must know the basic exemption threshold and the slab rates. These are volatile figures—they change annually—so always verify the current-year rates with the latest Finance Act or CBIC notification before your exam. However, the structure is stable:

Under the default tax regime (Section 115BAC, applicable for A.Y. 2026–27 onwards), the framework is:

• Up to the basic exemption limit: No tax is payable.
• Above the limit, in slabs: Tax is charged at progressive rates (5%, 10%, 15%, etc., depending on the slab).
• The slab rates increase as income rises, ensuring tax is progressive.

Verify the exact basic exemption limit and slab rates for your current financial year with the latest ICAI study materials or Finance Act. These change nearly every year and are a common exam trap.

Why These Concepts Matter for Your Exam

The CA Inter Taxation paper tests these fundamentals in multiple ways:

• Theoretical questions: "On what constitutional basis does Parliament levy income tax?" (Article 265, Entry 82).
• Definition questions: "Is interest received by a farmer on a loan agricultural income?" (No—it is income in the farmer's hands, but not agricultural income as defined in s. 2(5)).
• Calculation scenarios: You will not pass the slab calculation unless you know what counts as taxable income first.
• Case-based application: You may be given a scenario with agricultural and non-agricultural income mixed; you must separate and tax only what is taxable under the Act.

Master these four pillars—constitutional authority, income definition, capital exclusion, and slab structure—and you will handle 60–70% of the Taxation paper's conceptual backbone with confidence.

Practice Questions

Practise thousands more free MCQs on the Conferenza app to reinforce these concepts across different question patterns and edge cases.

Learning Resources

For deeper study of direct tax concepts, you can explore CA Inter Taxation - Income-tax Law lectures by CA Bhanwar Borana — from ₹7999. Alternatively, if you are comparing faculty options, check out lectures by CA Arushi Aggarwal — from ₹3000, CA Shirish Vyas — from ₹1799, CA Vijay Sarda — from ₹8000, CA Vijender Aggarwal — from ₹6999, or CA Nikunj Goenka — from ₹6000.

For structured study notes, Systematic Approach to Income Tax (CA Inter) — ₹1020 is a concise reference on foundational concepts.

FAQs

Q. Why is Article 265 tested in every taxation exam?
A. Because it is the constitutional foundation of all tax law in India. Without it, no tax can be levied. Examiners test whether you understand that taxation is not arbitrary—it requires law.

Q. Is agricultural income completely exempt from income tax?
A. Under the Income-tax Act, yes. However, some States levy tax on agricultural income under their own tax laws. In your exam, focus on the Income-tax Act definition: agricultural income taxable under the Act is exempt.

Q. What is the difference between "income" and "capital" for tax purposes?
A. Income is recurring or periodical earnings (salary, profit, rent). Capital is the invested amount or lump-sum receipts. The Act taxes income; capital is generally not taxed (though capital gains are taxed under separate rules).

Q. How often do basic exemption limits and tax slabs change?
A. Nearly every financial year, via the Finance Act. Always verify the exact figures for your A.Y. with the latest ICAI materials before your exam.

Keep these principles close, practise the MCQs, and revisit them weekly—direct tax concepts are your foundation for every application question that follows.