Public, bank and office holidays.

How holidays affect tax filing deadlines

Under Section 10 of the General Clauses Act, 1897, if a statutory due date falls on a Sunday or a public holiday, the act may be done on the next succeeding working day. The Income Tax Department and CBIC routinely apply this principle to ITR filing, TDS payment, and GST return deadlines.

In practical terms:

• If 31 July (ITR) falls on a Sunday, the effective due date is the next working day (typically 1 August).
• For TDS payment, if the 7th of the month falls on a holiday, the deposit can be made on the next working day without attracting interest under Section 201(1A).
• For GST returns, the GSTN portal accepts late submissions on the next working day where the due date is a holiday — but late fee logic on the portal can sometimes be misaligned, so file early where possible.

The CBDT and CBIC issue specific notifications when they wish to extend a due date beyond what the General Clauses Act provides — for example, during Covid years or for technical portal issues. Watch CBDT circulars for these.