The law
Income-tax Act 1961, Sec 139(1) (now Sec 263(1)) read with Explanation 2 as substituted by Finance Act 2026
Return due 31 July for individuals with no business income and no auditSource
Income-tax Rules 1962, ITR-1 for AY 2026-27 (notified 30 March 2026, corrigendum 10 April 2026)
ITR-1 eligibility: resident, income up to ₹50 lakh, up to two house properties, Sec 198 (old Sec 112A) LTCG up to ₹1.25 lakhSource
Income-tax Act 1961, Sec 115BAC (now Sec 202)
New regime is the default; a person without business income opts out in the return itselfSource
CBDT Notification No. 2 of 2024 (31 March 2024)
Verify within 30 days of upload, else the verification date is the filing date; unverified return is invalidSource
Income-tax Act 1961, Sec 234F (now Sec 428)
Late fee ₹1,000 if total income up to ₹5 lakh, else ₹5,000Source
Income-tax Act 2025, Sec 536
Proceedings for years before 1 April 2026 continue under the 1961 ActSource
Government fee
No government fee for filing on time. Any tax due is paid as self-assessment tax through e-Pay Tax before filing. Source: https://www.incometax.gov.in/iec/foportal/newdownloads/itr/itr-UM
Late fee or penalty
If filed after 31 July: Sec 428 (old Sec 234F) fee of ₹1,000 (total income up to ₹5,00,000) or ₹5,000 (above), plus Sec 423 (old Sec 234A) interest of 1% a month on unpaid tax. Source: https://www.incometax.gov.in/iec/foportal/help/all-topics/e-filing-services/%20income%20tax%20returns-faq and https://calcguru.in/belated-return-after-due-date/