Section 80AC: Timely Filing of Income Tax Returns for Chapter VI-A Deductions
Section 80AC of the Income-tax Act, 1961 makes filing the income tax return by the prescribed due date a condition for claiming specified income-linked deductions. Its scope was expanded from assessment year 2018-19.
What does Section 80AC mean?
Section 80AC is titled "Deduction not to be allowed unless return furnished". It does not create a new deduction. Instead, it imposes a filing deadline condition on deductions otherwise available under the relevant provisions of Chapter VI-A. The applicable return must be furnished on or before the due date under section 139(1).
Which deductions are covered?
| Assessment years | Deduction provisions covered by Section 80AC |
|---|---|
| AY 2006-07 to AY 2017-18 | Sections 80-IA, 80-IAB, 80-IB, 80-IC, 80-ID and 80-IE. |
| AY 2018-19 onwards under the 1961 Act | All applicable deductions in Chapter VI-A under heading C, "Deductions in respect of certain incomes"; not just the six sections previously listed. |
The Finance Act, 2018 expanded the condition to the entire category of deductions under heading C. The underlying eligibility rules, applicable periods and limits for each deduction must still be satisfied.
What is the due date under Section 139(1)?
Section 139(1) prescribes return-filing due dates according to the taxpayer's category and circumstances, including audit and transfer-pricing requirements. The ordinary statutory deadlines may differ for individuals, businesses subject to audit, and taxpayers required to submit a transfer-pricing report. Government extensions, where notified, must also be checked for the relevant year.
A return filed after the applicable due date can prevent a deduction covered by section 80AC, even if the income or business otherwise satisfies the substantive deduction conditions. A belated return is not generally a substitute for meeting this condition.
Practical illustration
Suppose an eligible business seeks a deduction under section 80-IA for an assessment year governed by the 1961 Act. The taxpayer must both satisfy the conditions of section 80-IA and file the income tax return within the deadline prescribed under section 139(1), as applicable. Merely earning eligible profits does not remove the timely-filing requirement.
Other provisions to read together
- Section 80A: General rules governing Chapter VI-A deductions, including claiming applicable deductions in the return.
- Section 80AB: Computation of eligible income for deductions in respect of certain incomes.
- Section 139(1): Statutory obligation and due dates for furnishing returns of income.
- Income-tax Act, 2025, section 122(5): Timely-return condition for the corresponding income-linked deductions under Part C of Chapter VIII.
Official legal references
- Income Tax Department: Section 80AC, Income-tax Act, 1961
- CBDT Circular No. 8/2018: Explanation of the Finance Act, 2018 amendment
- Income Tax Department: Section 80A
- Income Tax Department: FAQ on the 2025 Act and transitional deductions
- Official income tax e-filing portal
Frequently asked questions
Does Section 80AC apply only to Sections 80-IA through 80-IE?
No. That was the original limited scope. From AY 2018-19, the rule covers deductions under heading C of Chapter VI-A of the 1961 Act.
Does it apply to every Chapter VI-A deduction?
No. Its expanded wording applies to deductions under heading C, not automatically to deductions in other headings such as section 80C or section 80D.
What changes from 1 April 2026?
The Income-tax Act, 2025 replaces the earlier statutory framework for tax years to which it applies. Section 122(5) preserves a timely-filing condition for the corresponding category, subject to the new Act and transitional provisions.
Information is general and should be read with the legislation, applicable assessment or tax year, notifications and judicial decisions.