Interest on TDS/TCS Defaults and Non-Payment of Tax Demand: A Comprehensive Guide

Introduction

Under the Income Tax Act, 1961, interest liability arises across multiple situations involving tax collection and deduction failures. While provisions such as Section 234A, Section 234B, Section 234C, and Section 234D deal with return filing delays and advance tax shortfalls respectively, the present discussion focuses specifically on two critical interest-charging provisions:

• Section 201(1A) — covering failure to deduct tax at source or delay in depositing the deducted tax (TDS defaults)
• Section 206C(7) — covering failure to collect tax at source or delay in remitting the collected tax (TCS defaults)

Additionally, this guide addresses Section 220(2), which governs interest consequences when a demand raised through a notice under Section 156 remains unpaid within the stipulated period, along with the Finance Act, 2026 amendments that introduced relief provisions relating to penalty interest under Section 270A.

Understanding these provisions is essential for every deductor, collector, and assessee to avoid unintended interest burdens and ensure timely compliance.

Part I: TDS — Due Dates and Deposit Requirements

Understanding the TDS Payment Timeline

Before examining the interest consequences, it is important to appreciate the prescribed timelines within which the deducted tax must be credited to the Government. Sections 192 through 195 of the Income Tax Act, 1961 enumerate the categories of payments subject to TDS by the payer.

For a non-Government deductor, the deposit schedule is as follows:

• TDS deducted from April to February: Must be deposited to the Government's account within 7 days from the end of the month in which deduction was made.
• TDS deducted in March: Must be deposited on or before 30th April of the following financial year.

Special Rule: For deductions made under Section 194-IA (purchase of immovable property), Section 194-IB (rent payments), Section 194M (certain payments by Individual/HUF), and Section 194S (transfer of virtual digital assets), the TDS must be deposited within 30 days from the end of the month in which the deduction was made — irrespective of the month.

Practical Illustration: TDS Deposit Compliance

Scenario: Prakash & Associates, a partnership firm, has borrowed funds from Mr. Sharma, a friend of one of its partners. Monthly interest of Rs. 2,500 is paid on the last day of each month. The firm deducts TDS @ 10% and remits the net interest to Mr. Sharma. The TDS deposits are made on the following dates:

Observation: TDS for June 2025, September 2025, and November 2025 was deposited after the prescribed due dates. These late deposits will attract interest under Section 201(1A).

Part II: Interest for TDS Defaults under Section 201(1A)

Rate Structure for Interest on TDS Failures

Section 201 of the Income Tax Act, 1961 provides that any person who is obligated to deduct tax but either fails to deduct it or deducts but does not deposit the same to the Government shall be treated as an assessee-in-default and shall be liable to pay simple interest calculated as follows:

Key Principle: The interest clock starts running from the date the tax ought to have been deducted, not from the due date of deposit. This distinction significantly affects the quantum of interest liability.

Relief from Assessee-in-Default Status: Where the Deductee Pays the Tax