If you miss the 31 July 2026 deadline for AY 2026-27, you can still file a belated return under **Section 139(4) of the Income Tax Act, 1961** — but only until **31 December 2026**. After that date, you cannot file voluntarily. The costs are not just financial — you permanently lose the right to carry forward certain losses.

## What Is a Belated Return

A belated return is any return filed after the due date under **Section 139(1)**. For individuals and HUFs with non-audit cases, the due date for AY 2026-27 is **31 July 2026**. The belated return is a valid return and satisfies filing compliance — but it carries penalties, interest, and loss of certain privileges.

**New Income Tax Act, 2025:** The new Act, which governs Tax Year 2026-27 (FY 2026-27) onwards, retains equivalent provisions for late filing. Under the new Act, the filing timeline is anchored to the "Tax Year" rather than Assessment Year. For AY 2026-27 returns (FY 2025-26 income), the Income Tax Act, 1961 governs in full.

## Financial Penalties

### Section 234F — Mandatory Late Filing Fee

- **₹5,000** if filed between 1 August and 31 December 2026
- **₹1,000** if total income does not exceed ₹5,00,000

This fee is non-negotiable and non-waivable. It applies even if your full tax has been paid via TDS and your return shows a refund.

### Section 234A — Interest on Outstanding Tax

**1% per month, simple interest** on tax remaining unpaid after 31 July 2026, from 1 August 2026 until the date of payment. If your TDS has already covered your entire liability, Section 234A does not apply.

### Section 244A — Forfeiture of Refund Interest

If you are due a refund, **Section 244A interest** runs from 1 April 2026 (for on-time filers) or from the date of filing (for belated filers). By filing after 31 July, you forfeit the §244A interest for April through July — on a ₹1,00,000 refund, that is ₹2,000 given up for no reason.

## The Biggest Cost: Loss Carry-Forward Under Section 80AC

This is what most taxpayers do not realise until it is too late. **Section 80AC** provides that the following losses can only be carried forward if the return is filed within the due date under Section 139(1):

| Loss Type | Carry Forward with Belated Return? |
|-----------|-----------------------------------|
| Business loss (non-speculation) — §72 | ❌ Permanently lost |
| Speculation business loss — §73 | ❌ Permanently lost |
| Short-term capital loss — §74 | ❌ Permanently lost |
| Long-term capital loss — §74 | ❌ Permanently lost |
| Losses from owning racehorses — §74A | ❌ Permanently lost |
| **Loss from house property (up to ₹2L) — §71B** | **✅ Still carry forward** |
| **Unabsorbed depreciation — §32(2)** | **✅ Still carry forward** |

If you realised capital losses in FY 2025-26 — from equity mutual fund redemptions, stock sales, or property — those losses are **permanently forfeited** if you file after 31 July 2026. They cannot be set off against future capital gains in AY 2027-28 or later.

**Example:** You sold ELSS units in January 2026 at a loss of ₹80,000 (LTCL) and equity shares at a gain of ₹20,000. Net loss for the year: ₹60,000. If you file on time, this ₹60,000 LTCL carries forward for 8 years and offsets future LTCG. If you file late: the ₹60,000 loss is gone.

## Can You Revise a Belated Return?

Yes — **Section 139(5)** allows revision of any return originally filed under Section 139(1) or Section 139(4). You can file a revised return even if the original was belated. The revision deadline is also **31 December 2026** for AY 2026-27.

So: file a belated return in October, discover an error in November, revise it in November — all valid. Just ensure both the original (belated) and the revision are filed before 31 December 2026.

## Worked Example — The Real Cost of Filing Late

Deepak earned salary of ₹8,00,000 and had the following capital transactions in FY 2025-26:

| Transaction | Gain / Loss |
|-------------|------------|
| LTCG on equity mutual funds | ₹1,40,000 |
| LTCL on listed bonds | ₹2,00,000 |
| Net LTCL for the year | ₹60,000 |

**If filed on 28 July 2026:** Net LTCL of ₹60,000 carried forward. Offsets future LTCG in AY 2027-28 through AY 2034-35. LTCG of ₹1,40,000 — ₹1,25,000 exemption under §112A = ₹15,000 taxable at 12.5% = ₹1,875 tax.

**If filed on 10 September 2026 (belated):** Same ₹1,875 tax plus ₹5,000 §234F fee. And the ₹60,000 LTCL carry-forward is permanently forfeited. Over the next 8 years, assuming he earns ₹60,000 LTCG, the lost carry-forward costs him ₹7,500 in future tax.

Total cost of delay: ₹5,000 (234F) + ₹7,500 (lost carry-forward value) = **₹12,500**.

## Frequently Asked Questions

**Can I file after 31 December 2026?** No. After the belated return deadline, voluntary filing is not possible. The Assessing Officer can initiate proceedings under **Section 144** (best judgment assessment), which typically results in a higher assessed income and demand.

**I have no tax liability and no refund — do I still need to file?** If your income exceeds the basic exemption limit (₹4,00,000 under the new regime for AY 2026-27, s.115BAC(1A) / ₹2,50,000 under the old regime for an individual below 60), filing is mandatory under Section 139(1) regardless of whether tax is due. Additional mandatory filing conditions exist if you have foreign assets, are a company director, or have deposited more than ₹1 crore in a bank account.

**What penalty applies for not filing at all?** Beyond §234F, the Assessing Officer can levy **₹5,000 under Section 271F** for failure to furnish a return. Criminal prosecution under **Section 276CC** is possible if tax evaded exceeds ₹25,00,000 — attracting imprisonment of 6 months to 7 years.

**If I file a belated return, will I face income tax scrutiny?** CBDT's risk management systems assign higher scrutiny probability to late returns, particularly those with a history of delay. However, a belated return with correctly reported income and full tax paid is substantially less risky than not filing at all.

**I missed 31 July due to a medical emergency — is there any relief?** The Income Tax Act does not provide the CBDT with statutory power to waive §234F. However, if your return has been processed and there is a genuinely exceptional circumstance, a representation to the CIT (Appeals) may be considered under residual powers — though success rates are low. File regardless and pay the fee.

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31 July is 9 weeks away. Protect your loss carry-forwards by filing on time. [File your ITR with Harun Raaj & Associates →](/services/itr-filing)

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## See Also

- [Your RSUs Are Not Just Salary: The Two Separate Disclosures Required in AY 2026-27 ITR](https://www.harunraaj.com/blog/schedule-fa-rsu-foreign-assets-itr-2-ay-2026-27)
- [ESOP Tax Deferral for Startup Employees: The 48-Month Mechanism Most Tax Advisors Misexplain](https://www.harunraaj.com/blog/esop-tax-deferral-80-iac-startup-employees)
- [Section 80-IAC Tax Holiday: How Startups Actually Get the IMB Certificate](https://www.harunraaj.com/blog/section-80-iac-imb-certificate-startup-tax-holiday)

Canonical: https://www.harunraaj.com/blog/belated-return-section-139-4