What changed
A real change. From 1 April 2026 the audit default is a fixed fee, not a discretionary penalty, so the 'reasonable cause' route of the penalty provisions does not apply in the same way.
These are summaries, not the statutory text. Read the bare Act for both sections on the
Income Tax Department's official site,
which also has a side-by-side comparison utility.
Frequently asked
What is the penalty for late tax audit under the new Income Tax Act?
Fee under section 428(c): ₹75,000 if the delay is up to one month, ₹1,50,000 after that (Finance Act 2026).
Is section 271B still applicable?
For FY 2025-26 and earlier years under the 1961 Act, yes. From tax year 2026-27 the fee in section 428(c) applies.
What is section 271B called in the new Income-tax Act, 2025?
Section 271B of the Income-tax Act, 1961 corresponds to Section 428(c) of the Income-tax Act, 2025, which applies from 1 April 2026 (tax year 2026-27). Detailed reference: Section 428(c) (fee) — CBDT mapping 446.
What changed in section 271B under the new Income Tax Act?
A real change. From 1 April 2026 the audit default is a fixed fee, not a discretionary penalty, so the 'reasonable cause' route of the penalty provisions does not apply in the same way.
Is section 271B still applicable for FY 2025-26?
Yes. Income of FY 2025-26 (AY 2026-27) and earlier years is governed by section 271B of the 1961 Act. Section 428(c) of the 2025 Act applies from tax year 2026-27.