Indian Income Tax Guide

Basic Rules of Income Tax Deductions: Sections 80A, 80AB and 80C

Chapter VI-A of the Income-tax Act, 1961 sets out deductions from gross total income. Sections 80A and 80AB provide important general rules, while Section 80C allows specified investments and payments to reduce taxable income for eligible taxpayers under the old tax regime.

1. Section 80A: General rules for Chapter VI-A deductions

Section 80A governs how eligible deductions are applied when computing total income:

• Deduct from gross total income: Chapter VI-A deductions are applied to gross total income computed under the Act, subject to specific provisions.
• No deduction beyond gross total income: Under Section 80A(2), aggregate Chapter VI-A deductions cannot exceed gross total income. They cannot create or increase a tax loss.
• Avoid duplicate deductions: The same income or amount cannot be deducted twice where the statute prohibits double relief.
• AOP and BOI: Under Section 80A(4), where a deduction is allowed in computing the total income of an association of persons or body of individuals, the member cannot claim the same deduction again in respect of that share of income.
• Eligible claim and supporting evidence: The taxpayer must meet the conditions of the relevant section and retain documentation, such as investment statements, premium receipts and payment records.

Chapter VI-A deductions are not restricted to individuals and Hindu undivided families (HUFs) as a whole. Eligibility varies by provision: for example, Section 80C applies to individuals and HUFs, whereas other deductions may apply to companies, firms or other assessees.

2. Section 80AB: Deductions linked to eligible income

For deductions covered by Section 80AB, the amount of income eligible for deduction is determined with reference to the net income computed in accordance with the Income-tax Act and included in gross total income, rather than simply the gross receipts. Expenses and other applicable computation rules must be considered.

Section 80AB is not a general rule that every Chapter VI-A deduction must come from a particular current-year receipt. Investment-based deductions, such as Section 80C, have their own eligibility and payment conditions.

3. Section 80C: Eligible investments and payments

Section 80C provides a deduction of up to Rs. 1,50,000 in a financial year for specified investments and payments made by eligible individuals and HUFs under the old tax regime. The actual deduction depends on qualifying expenditure, statutory restrictions and available gross total income.

Common qualifying items

• Life insurance premiums, subject to applicable policy and premium conditions.
• Employee contributions to a recognised provident fund and qualifying public provident fund (PPF) contributions.
• Equity-linked savings schemes (ELSS) meeting prescribed conditions.
• National Savings Certificates (NSC) and eligible five-year tax-saving fixed deposits.
• Eligible tuition fees for up to two children, subject to statutory conditions.
• Repayment of principal on a qualifying housing loan and certain eligible stamp duty and registration expenses, subject to conditions.
• Sukanya Samriddhi Account deposits and other specified savings or payments.

4. Combined deduction limit: Sections 80C, 80CCC and 80CCD(1)

Under Section 80CCE, the aggregate deduction under Sections 80C, 80CCC and 80CCD(1) is limited to Rs. 1,50,000 per year, not the earlier Rs. 1,00,000 limit.

5. Old tax regime versus new tax regime

For FY 2025-26, taxpayers choosing the old regime can claim eligible Chapter VI-A deductions, including Sections 80C and 80D. Under the default new regime, most of these deductions are not allowed; however, specific exceptions, including eligible employer contributions under Section 80CCD(2), remain available.

Taxpayers should compare their total tax under both regimes, taking into account income, applicable slabs, rebate eligibility and deductions. The rules for opting out of the default regime differ for taxpayers with business or professional income.

6. Payment, return filing and claim requirements

• Actual qualifying payment: Deductions such as Section 80C generally require qualifying sums to have been paid or deposited during the relevant financial year; merely planning an investment is insufficient.
• Timely filing: Certain deductions, especially those covered by Section 80AC, require filing the income-tax return by the due date under Section 139(1). This requirement should not be inaccurately extended to every Chapter VI-A deduction.
• Return disclosure: Report deductions correctly in the applicable income-tax return and maintain evidence for verification.
• Section-specific conditions: Lock-in periods, eligible persons, income restrictions, ownership rules and repayment-related reversals may affect entitlement.

7. Practical example

Suppose an eligible individual under the old regime pays Rs. 90,000 into PPF, Rs. 45,000 in qualifying life insurance premiums and Rs. 35,000 in eligible tuition fees during FY 2025-26. Total qualifying Section 80C payments are Rs. 1,70,000, but the Section 80C deduction is restricted to Rs. 1,50,000, subject to the combined Section 80CCE ceiling and sufficient gross total income.

8. Related deductions and further reading

For section-specific requirements, consult the related guides on Section 80C deductions, Section 80D medical insurance, Section 80DD disability-related deductions, Section 80DDB specified diseases, Section 80E education loan interest and Section 80EE housing loan interest.

For legislative text and official guidance, refer to the Income Tax Department.

Updated: 10 October 2026. This article discusses the Income-tax Act, 1961 provisions relevant to FY 2025-26 / AY 2026-27. The applicable law and tax-year terminology should be checked separately for periods beginning 1 April 2026.