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Income Tax Act 2025

How to File ITR Under New Income Tax Act 2025

Olambit Team |
6 min read For salaried individuals, businesses, and NRIs filing returns from FY 2026-27
In short
  • Section 139 (filing of return) renumbered to Section 263 under the Income Tax Act 2025.
  • Process unchanged. Same e-filing portal, same forms (ITR-1 to ITR-7), same Aadhaar/DSC verification.
  • Interest sections renumbered: 234A/234B/234C are now 423/424/425. Rates and triggers unchanged.
  • Due date 31 July 2027 for AY 2027-28 (the first year filed under the new Act for individuals).

Starting FY 2026-27, your Income Tax Return will be filed under the Income Tax Act 2025. The filing process, deadlines, and penalties remain the same - only the section numbers referenced on the form change. Here is what you need to know.

Key Section Mapping for ITR Filing

139 → 263Filing of return
139A → 262PAN allotment
234A → 423Interest for late filing (1% / month)
234B → 424Interest for non-payment of advance tax
234C → 425Interest for deferment of advance tax instalments
234F → 441Late filing fee (Rs 5K, or Rs 1K below Rs 5L)
271 → 441 onwardsPenalty provisions

ITR Filing Due Dates: No Change

The filing deadlines under the new act remain identical to the current schedule:

  • July 31: Individuals, HUFs, and taxpayers not requiring audit
  • October 31: Businesses and professionals requiring audit (turnover above Rs 1 crore for business, Rs 50 lakh for professionals)
  • November 30: Taxpayers required to furnish transfer pricing report
  • December 31: Belated return (with late fee of Rs 5,000 under Section 234F equivalent)
  • December 31: Revised return (to correct errors in original return)

Penalties for Late Filing: Same Rules, New Numbers

  • Late filing fee: Rs 5,000 if filed after July 31 but before December 31. Rs 1,000 if total income is below Rs 5 lakh.
  • Interest under Section 423 (old 234A): 1% per month on unpaid tax, from the due date until the date of filing
  • Interest under Section 424 (old 234B): 1% per month on shortfall in advance tax payment (if advance tax paid is less than 90% of assessed tax)
  • Interest under Section 425 (old 234C): 1% per month for deferment of advance tax instalments

Which ITR Form to Use

The ITR form selection criteria remain unchanged:

  • ITR-1 (Sahaj): Salaried individuals with income up to Rs 50 lakh, one house property, interest income, and agricultural income up to Rs 5,000
  • ITR-2: Individuals and HUFs without business income but with capital gains, multiple properties, or foreign income
  • ITR-3: Individuals and HUFs with business or professional income
  • ITR-4 (Sugam): Presumptive income under Section 58 (old 44AD/44ADA/44AE) with income up to Rs 50 lakh
  • ITR-5: Partnership firms, LLPs, AOPs, BOIs
  • ITR-6: Companies (other than those claiming Section 140 exemption)
  • ITR-7: Trusts, political parties, institutions

Advance Tax: Who Needs to Pay

If your total tax liability for the year exceeds Rs 10,000, you must pay advance tax in instalments:

  • June 15: At least 15% of estimated tax
  • September 15: At least 45% of estimated tax
  • December 15: At least 75% of estimated tax
  • March 15: 100% of estimated tax

Senior citizens (60+) without business income are exempt from advance tax. This continues under the new act.

Verification: Same Options

After filing, you must verify your return within 30 days. Options remain the same:

  • Aadhaar OTP (most common)
  • Net banking
  • Bank account EVC
  • Demat account EVC
  • Physical ITR-V sent to CPC Bengaluru (not recommended - slow)

What Changes for FY 2026-27 Filing

The Income Tax Department will update the e-filing portal and ITR forms to reference new section numbers. Your CA or tax software will handle the mapping automatically. The filing experience from your side will be identical - only the section references printed on the form change.

Frequently Asked Questions

What is the new section number for ITR filing?

Section 139 (filing of return) is now Section 263 under the Income Tax Act 2025. The due dates, forms, and filing process remain exactly the same.

Which ITR form should I use for salary income?

Salaried individuals with income up to Rs 50 lakh, one house property, and interest income should use ITR-1 (Sahaj). If you have capital gains, multiple properties, or foreign income, use ITR-2 instead.

What is the interest for late filing of ITR?

Interest at 1% per month under Section 423 (old 234A) applies on unpaid tax from the due date until filing. A late filing fee of Rs 5,000 (Rs 1,000 if income is below Rs 5 lakh) also applies under Section 441.

How do I verify my ITR after filing?

You must verify within 30 days of filing. Fastest method is Aadhaar OTP. You can also verify through net banking, bank account EVC, or demat account EVC. Physical ITR-V sent by post is also accepted but slow.

Related reading

For the full filing-date calendar including audit and transfer pricing cases, see ITR filing deadlines 2026. For penalty exposure when you miss the deadlines, see penalties under the new Act.

Disclaimer: This article provides general information about the Income Tax Act 2025 and is not tax advice. Consult a qualified Chartered Accountant for advice specific to your situation.

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