Section 139(1) of the Income Tax Act, 1961, establishes the fundamental obligation to file an income tax return. It specifies who must file a return and the deadline applicable to each taxpayer. Every taxpayer in India should understand this provision before the income tax return filing season begins in April and continues through July for most individual taxpayers.
This section forms the foundation of return filing compliance for individuals, companies, and other taxpayers. Failure to meet its requirements can trigger a late fee of up to ₹5,000 under Section 234F, interest at 1% per month under Section 234A, and the loss of certain tax benefits.
This guide explains the meaning of Section 139(1), the persons required to file, and the current due dates. It also addresses voluntary returns, the common notice confusion, and the consequences of late filing.
Key Takeaways
- Section 139(1) of the Income Tax Act requires eligible taxpayers to file their income tax return within the prescribed due date.
- Companies and firms must file a return every year, even when they report a loss or nil income. Individuals and HUFs must file when their total income exceeds the basic exemption limit.
- The seventh proviso and Rule 12AB mandate filing in certain high-value cases, even when income stays below the exemption limit.
- Explanation 2 to Section 139(1) prescribes the due date for each category of taxpayer.
- For AY 2026-27, the deadline is July 31, 2026, for most salaried individuals filing ITR-1 or ITR-2.
- Taxpayers who miss the due date may still file a belated return, though they forfeit certain benefits.
What is Section 139(1) of the Income Tax Act?
Section 139(1) of the Income Tax Act defines the legal obligation to file an Income Tax Return. The provision governs who must file and the time limit within which they must do so. It applies to the following taxpayers:
- Individuals
- Hindu Undivided Families (HUFs)
- Companies
- Firms
- Other taxpayers, such as AOPs and BOIs
- Ordinarily resident individuals who hold foreign assets or have signing authority in any account located outside India
Filing an ITR is particularly important for ordinarily resident individuals who hold foreign assets or have signing authority in foreign accounts. They must file a return under Section 139(1) even when they have no taxable income in India. Failure to comply may result in penalties and other consequences under the Income Tax Act and the Black Money (Undisclosed Foreign Income and Assets) and Imposition of Tax Act, 2015.
In substance, the meaning of Section 139(1) is the mandatory filing rule for eligible persons. The provision of Section 139(1) of the Income Tax Act, 1961, treats filing as a self-declaration duty. The taxpayer does not await any communication from the department. Instead, the taxpayer assesses their own income and files the return on time. Readers who want to study the exact legislative wording can consult Section 139(1) of the Income Tax Act Bare Act text, which sets out the filing obligation in its original statutory form without commentary or interpretation.
Who Must File a Return Under Section 139(1)?
Section 139(1) sets out separate filing obligations for different categories of taxpayers. The following clauses specify who must furnish an ITR:
Section 139(1)(a) – Companies and Firms
Section 139(1)(a) requires every company and firm to furnish an income tax return for each financial year. This obligation applies irrespective of whether the entity earns a profit, incurs a loss, or reports nil income. Accordingly, even a company with no business operations during the year must file its return within the prescribed due date.
Section 139(1)(b) – Individuals, HUFs, and Others
Section 139(1)(b) covers every other person, including individuals, HUFs, Associations of Persons (AOPs), and Bodies of Individuals (BOIs). These taxpayers must file when their total income exceeds the basic exemption limit. The law measures this income before deductions under Chapter VI-A, such as Section 80C.
The applicable exemption limit depends on the tax regime you choose. Under the new regime, which is the default for FY 2025-26, the limit is ₹4 lakh. Under the old regime, the limit is ₹2.5 lakh, which rises to ₹3 lakh for senior citizens and ₹5 lakh for super senior citizens. As a result, some taxpayers must file even when their taxable income becomes nil after the rebate.
Mandatory Filing Under the Seventh Proviso
Some taxpayers must file even when their income stays below the exemption limit. The seventh proviso and Rule 12AB together list these high-value conditions. The Finance Act, 2019, inserted the seventh proviso with three conditions. You must file a return if any of the following apply during the year:
- You deposit more than ₹1 crore in one or more current accounts with a bank.
- You spend more than ₹2 lakh on foreign travel for yourself or another person.
- You pay for electricity expenditure that exceeds ₹1 lakh in total.
Additional Conditions Under Rule 12AB
The Central Board of Direct Taxes (CBDT) later added four more conditions through Rule 12AB in 2022. These conditions also trigger mandatory filing under Section 139(1)(b):
- Your business sales or turnover exceed ₹60 lakh.
- Your professional gross receipts exceed ₹10 lakh.
- Your total TDS and TCS reach ₹25,000 or more (₹50,000 for senior citizens).
- Your savings account deposits total ₹50 lakh or more during the year.
A resident who holds foreign assets or signing authority abroad must also file a return. This requirement applies even when the person earns no taxable income in India.
Due Date Under Section 139(1) of the Income Tax Act
Explanation 2 to Section 139(1) of the Income Tax Act fixes the due date for each taxpayer category. The due date under Section 139(1) of the Income Tax Act depends on your profile and audit status.
The table below shows the applicable dates for Assessment Year 2026-27 (Financial Year 2025-26):
| Taxpayer Category | Due Date for AY 2026-27 |
| Individuals and HUFs filing ITR-1 or ITR-2 (no audit) | July 31, 2026 |
| Non-audit taxpayers filing ITR-3 or ITR-4 | August 31, 2026 |
| Companies, firms, and taxpayers requiring an audit | October 31, 2026 |
| Taxpayers filing a transfer pricing report under Section 92E | November 30, 2026 |
The Central Board of Direct Taxes (CBDT) may extend these dates in exceptional circumstances. For AY 2026-27, the department has not announced any extension of the July 31, 2026, deadline as of late July 2026. Taxpayers should therefore file early and avoid the last-minute portal congestion.
Note: Although the Income Tax Act, 2025 came into force on April 1, 2026, the return for FY 2025–26 (AY 2026–27) continues to be governed by the Income Tax Act, 1961. Accordingly, the provisions of Section 139 of the 1961 Act continue to apply to this return. The corresponding provisions under the Income Tax Act, 2025, apply only to subsequent financial years.
You can read the current Section 139 provisions on the official Income Tax Department website.
What Happens If You Miss the Section 139(1) Due Date?
A taxpayer who fails to furnish a return within the due date prescribed under Section 139(1) may file a belated return under Section 139(4). For Assessment Year (AY) 2026–27, you may furnish a belated return on or before December 31, 2026, or before the completion of the assessment, whichever occurs earlier.
A belated return attracts a late filing fee under Section 234F of ₹5,000 in most cases and ₹1,000 where the total income does not exceed ₹5 lakh. If you have any unpaid tax liability, you must also pay interest under Section 234A for the period of delay.
Late filing also restricts important tax benefits. A taxpayer who files a belated return cannot carry forward business losses or capital losses to subsequent years, except where the Act specifically permits. Accordingly, timely filing helps preserve valuable tax benefits in addition to avoiding late fees and interest.
If you discover an error in your filed return, you may file a revised return under Section 139(5). For AY 2026–27, the revision deadline is March 31, 2027, or the completion of the assessment, whichever is earlier. If you miss both the original and belated filing deadlines, you may file an updated return under Section 139(8A), subject to the prescribed conditions and payment of additional tax.
Voluntary Return Under Section 139(1)
A voluntary return is an income tax return that a taxpayer files even when Section 139(1) does not impose a statutory filing obligation. Taxpayers often file voluntary returns to maintain a documented financial record, which may support applications for loans, credit cards, or visas.
Voluntary filing also enables taxpayers to claim refunds of excess tax deducted or collected during the financial year. Accordingly, filing a return under Section 139(1) may provide practical financial and compliance benefits even when the law does not mandate filing.
Is There a Notice Under Section 139(1)?
Section 139(1) does not empower the Income Tax Department to issue a notice. It imposes a statutory obligation on eligible taxpayers to furnish an income tax return within the prescribed due date on their own initiative.
The Income Tax Department issues a notice requiring a taxpayer to furnish a return under Section 142(1), not under Section 139(1). A notice under Section 142(1) generally applies when a taxpayer has failed to file a return or when the Assessing Officer requires the taxpayer to furnish a return, information, or supporting documents during assessment proceedings.
Taxpayers should therefore distinguish between these provisions: Section 139(1) prescribes the statutory filing obligation, whereas Section 142(1) authorizes the Department to require compliance through a formal notice.
Do you need expert guidance to understand Section 139(1) of the Income Tax Act and complete your ITR filing correctly?
RegisterKaro can simplify Section 139(1) of the Income Tax Act compliance with Online CA Service experts support, ensuring accurate filing, timely returns, and proper guidance. Contact us today for reliable tax filing support and professional assistance with your income tax compliance needs!
