1. Agricultural Income: Definition, Typologies & Apportionment

Under Entry 82 of List I (Union List) of the Seventh Schedule to the Constitution of India, the Parliament of India has the power to levy taxes on income other than agricultural income. Agricultural income is an exclusive state subject (Entry 46 of List II). Consequently, under Section 10(1) of the Income Tax Act, 1961, agricultural income is fully exempt from Central income tax.

Under Section 2(1A) of the Income Tax Act, 1961, "Agricultural Income" is exhaustively defined to mean:

• Any rent or revenue derived from land which is situated in India and is used for agricultural purposes;
• Any income derived from such land by agriculture or the performance by a cultivator of any process ordinarily employed to render the produce fit to be taken to market;
• Income derived from the sale by a cultivator of the produce raised by him;
• Any income derived from any building owned and occupied by the cultivator or receiver of rent, situated on or in the immediate vicinity of agricultural land, used as a dwelling-house, storehouse, or out-building (farm building).

A. Composite / Partly Agricultural Income (Rules 7, 7A, 7B, and 8)

When an assessee grows agricultural produce and uses it as raw material in their own commercial manufacturing business (e.g., manufacturing tea, rubber, or coffee), the resulting income is a composite mixture of agricultural income (exempt) and business income (taxable). The Income Tax Rules prescribe fixed percentage apportionment formulas:

2. The Scheme of Partial Integration of Agricultural Income

Although agricultural income is constitutionally exempt from Central tax, Parliament enacted the Scheme of Partial Integration to tax non-agricultural income at a higher marginal slab rate by indirect integration.

Statutory Conditions & 3-Step Integration Formula

Applicability Conditions (Both must be satisfied simultaneously):
1. The assessee is an Individual, HUF, AOP, BOI, or Artificial Juridical Person (Does NOT apply to Companies, LLPs, or Firms).
2. Net Agricultural Income exceeds ₹5,000 during the previous year.
3. Non-Agricultural Net Taxable Income exceeds the basic statutory exemption limit.

Step 1: Compute Tax on Combined Income:
Calculate income tax at applicable slab rates on: $\text{Aggregate Income}=\text{Net Agricultural Income}+\text{Non-Agricultural Taxable Income}$.

3. Assessment of Individuals & The New Concessional Regime [Sec 115BAC]

The total taxable income of an individual is computed by aggregating income under all five heads (Salaries, House Property, PGBP, Capital Gains, and Other Sources), subtracting allowable Chapter VI-A deductions.

A. Alternate Minimum Tax (AMT) under Section 115JC

Statutory Mechanism of Alternate Minimum Tax (AMT)

Applicability: Non-corporate assessees (Individuals, HUF, Firms) claiming profit-linked deductions under Chapter VI-A (Sections 80-IA to 80RRB, except 80P) or Section 10AA or Section 35AD, provided Adjusted Total Income exceeds ₹20 Lakhs.
Note: AMT does NOT apply if the individual opts for the Section 115BAC new tax regime.

4. Assessment of Hindu Undivided Family (HUF)

Under the Income Tax Act, a Hindu Undivided Family (HUF) is assessed as a separate, distinct taxable entity. An HUF consists of all persons lineally descended from a common male ancestor, including their wives and unmarried daughters.

5. Practical Numerical Assessment Problems

Practical Problem 1: Computation of Tax Liability under Partial Integration

Case Data: For the Assessment Year 2026–27, Mr. Rajesh (aged 48, resident individual electing the Old Tax Regime) submits the following income particulars:
• Net Non-Agricultural Taxable Income = ₹8,50,000
• Net Agricultural Income derived from ancestral paddy lands in Kerala = ₹3,00,000
Requirement: Compute the net tax liability of Mr. Rajesh applying the Scheme of Partial Integration.

Juristic Condition Check:
1. Assessee is an Individual.
2. Net agricultural income (₹3,00,000) exceeds ₹5,000.
3. Non-agricultural income (₹8,50,000) exceeds basic exemption limit (₹2,50,000).
Both conditions satisfied → Partial Integration applies.

Step 1: Compute Tax on Aggregate Income (Non-Agri + Agri):
$\text{Aggregate Income}=\text{Rs. }8,50,000+\text{Rs. }3,00,000=\text{Rs. }11,50,000$
• Up to ₹2,50,000 = Nil
• ₹2,50,001 to ₹5,00,000 @ 5% = ₹12,500
• ₹5,00,001 to ₹10,00,000 @ 20% = ₹1,00,000
• Balance above ₹10,00,000 (₹1,50,000) @ 30% = ₹45,000
$\mathbf{Tax}\mathbf{in}\mathbf{Step}1=\text{Rs. }12,500+\text{Rs. }1,00,000+\text{Rs. }45,000=\text{Rs. }1,57,500$
Step 2: Compute Tax on (Agri Income + Basic Exemption Limit):
$\text{Threshold Income}=\text{Rs. }3,00,000+\text{Rs. }2,50,000=\text{Rs. }5,50,000$
• Up to ₹2,50,000 = Nil
• ₹2,50,001 to ₹5,00,000 @ 5% = ₹12,500
• Balance above ₹5,00,000 (₹50,000) @ 20% = ₹10,000
$\mathbf{Tax}\mathbf{in}\mathbf{Step}2=\text{Rs. }12,500+\text{Rs. }10,00,000=\text{Rs. }22,500$
Step 3: Base Tax Payable:
$\text{Base Tax}=\text{Step 1}-\text{Step 2}=\text{Rs. }1,57,500-\text{Rs. }22,500=\text{Rs. }1,35,000$
• Add: Health and Education Cess @ 4% = $4\%\times \text{Rs. }1,35,000=\text{Rs. }5,400$
$\mathbf{Total}\mathbf{Net}\mathbf{Tax}\mathbf{Liability}=\text{Rs. }1,35,000+\text{Rs. }5,400=\text{Rs. }1,40,400$