Income Tax Calendar September 2025: Important Deadlines for Taxpayers
Check the Income Tax Calendar for September 2025. Key deadlines for ITR filing, TDS, advance tax, and audit reports that taxpayers must not miss.
Income Tax Calendar September 2025: Key ITR, TDS, and audit deadlines announced by the Income Tax Department.
The Income Tax Department has released its compliance calendar for September 2025, outlining crucial deadlines for taxpayers, corporates, and government offices. The schedule covers TDS/TCS deposits, advance tax payments, ITR filing, and audit report submissions. Missing these due dates could attract penalties, late fees, or scrutiny from tax authorities.
Key Income Tax Deadlines in September 2025
7 September
- Deposit TDS/TCS for August 2025
- Upload buyer declarations in Form 27C
14 September
- Issue TDS certificates for July 2025 under Sections 194-IA, 194-IB, 194M, 194S
15 September
- Submit Form 24G (TDS/TCS without challan)
- Pay second instalment of advance tax for AY 2026–27
- File Form 3BB (client code modifications)
- Last date for filing ITR for AY 2025–26 (extended from 31 July)
- File declarations under Sections 80GG, 80RRB, 80QQB, and relief claims under Sections 89, 89A
- Opt for concessional regimes under Sections 115BAC, 115BAD, 115BAE, 115BBF
30 September
- Submit challan-cum-statements for August TDS
- File audit report under Section 44AB for AY 2025–26 (corporates & taxpayers with 31 October ITR deadline)
- File Form 9A & Form 10 for income accumulation/future application
- Submit audit reports in prescribed forms (10B, 10BB, 3AC, 3AD, 3AE, 3CE)
- Submit reports/certificates under Sections 80LA, 80JJAA, 115JB, 115JC, 115VW
Tax professionals caution that failure to meet these deadlines may lead to notices, penalties, or prolonged assessments. With multiple critical filings due, September 2025 is a high-compliance month for taxpayers across India.
