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Case law › Section 43B

Section 43B

Authorities that bear on section 43B of the Income-tax Act, 1961. Each one tells you what it decided and what to do if it applies to you.

The Income-tax Act, 1961 was repealed on 1 April 2026. It still governs income earned up to 31 March 2026, and every proceeding about those years however late — assessment, reassessment, rectification, penalty, revision and appeal alike. Income earned from 1 April 2026 is governed by the Income-tax Act, 2025. What changed, and which Act governs your year →

Section 43B — the law in short

What the courts have decided on section 43B, in one screen. Read this first; open an entry when you need the facts, the reasoning and the source.

Listed strongest first: Supreme Court, then High Court, then Tribunal, then CBDT. Nothing here has yet been read in full by a chartered accountant — open an entry to see where it came from.

Section 43B — 25 entries

Worked examples

Notice situations in which section 43B does the work, taken from the first line to the last. Each step carries the authority that licenses it.
A s.43B(h) disallowance of Rs 1,62,00,000 where half the Udyam-registered suppliers are traders The Assessing Officer has disallowed everything I still owed to Udyam-registered suppliers at the year end under s.43B(h) - which of those suppliers actually count, and when do I get the deduction back? 8 steps · 27 authorities · s.43B(h), s.43B, s.43B first proviso, s.143(3)

Explained in this library

What section 43b does, in plain English, before you read what the courts made of it.

A provision for gratuity is not deductible because an actuary certified it

Our actuary has certified the gratuity liability and we have provided for it in the accounts. Is that provision allowable?

s.41(1): the deduction taken in an earlier year, coming back

The officer wants to tax old creditor balances, a waived loan and a refund under s.41(1). What does he actually have to establish first?

section 36(1)(va): employees' contributions and the due date under the relevant law

My auditor has reported in Form 3CD that some months' PF and ESI were deposited a few days late, and the department has disallowed the employees' share even though I paid every rupee before I filed my return. I thought section 43B let me pay by the return due date. Can they do this, and do I get the deduction in the year I paid?

section 43B: deductions allowed only on actual payment

I keep my books on the mercantile basis and I have provided for GST, provident fund, a bonus and interest on my bank loan. The assessing officer has added all of it back because I had not paid it by 31 March. Can he do that, and do I lose the deduction for good?

Which Act governs your year: the 1961 Act after 1 April 2026

I am holding a notice and I do not know whether my year is under the Income-tax Act, 1961 or the Income-tax Act, 2025. Which Act applies to me, and is the old Act still of any use now that it has been repealed?