Income tax calendar October 2026: ITR, TDS, Form 141 and other deadlines to know

October 2026 is a critical month for taxpayers in India, as the government has set several key deadlines for the current financial year. The most significant date is the deadline for filing the Annual Information Return (AIR) for the assessment year 2026-27. This return must be filed by October 31, 2026, and is mandatory for anyone who has made high-value transactions. Failure to file this return on time can lead to penalties and complications with tax assessments. Additionally, the government has introduced a new deadline for the submission of Form 141, which is used to report certain types of income. This form must be submitted by October 31, 2026, to ensure compliance with tax regulations.

For investors, this month is important because it serves as a reminder to review their tax compliance status. Missing these deadlines can result in late fees and interest charges, which can impact your overall returns. It is advisable to keep track of all tax-related documents and ensure that all filings are completed on time. The tax department may also conduct audits based on the information provided in these returns, so accuracy is crucial. Investors should also be aware of any changes in tax laws or rates that may affect their investments and plan accordingly to avoid any surprises.