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Case law › Section 143(1)(a)

Section 143(1)(a)

Authorities that bear on section 143(1)(a) 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The Income-tax Act, 1961 was repealed on 1 April 2026.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 143(1)(a) — the law in short

What the courts have decided on section 143(1)(a), 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 143(1)(a) — 21 entries

Worked examples

Notice situations in which section 143(1)(a) does the work, taken from the first line to the last. Each step carries the authority that licenses it.
A consultant who filed at six per cent under s.44AD, recast at fifty per cent, and then told that no presumptive section applies to him at all The officer says my work is technical consultancy so s.44AD is shut to me, and that my receipts are above the s.44ADA ceiling so that section is shut too - where does that leave me on income, books, audit and penalty? 8 steps · 32 authorities · s.44ADA, s.44AD, s.44AD(6), s.44AD(4) A refund determined thirty-four months after the return, with interest under s.244A run from the wrong date and part of it taken against another year My refund came three years late, the interest under s.244A was computed from a date that appears nowhere in the section, and part of the money was set off against a demand under appeal - how do I get the rest? 8 steps · 27 authorities · s.244A, s.244A(1)(a), s.244A(1)(aa), s.244A(1A) A s.139(9) notice on a turnover difference between Form 3CD and the return, answered eight months after the fifteen days ran out The processing centre called my return defective, the fifteen days have gone and the portal now shows the return as invalid - is the loss carry-forward and the deduction gone, and what do I do first? 8 steps · 55 authorities · s.139(9), s.139(9) proviso, s.139(9) Explanation, s.139(1) 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) An intimation that disallowed two claims before anyone had answered, a rectification nobody has decided, and next year's refund gone The processing centre disallowed my deductions and raised a demand without ever hearing me, my rectification has been sitting for seven months and my next refund has been taken against the demand - what do I do first? 8 steps · 25 authorities · s.143(1), s.143(1)(a), s.154, s.154(8) Form 10-IC filed 108 days after the due date, the 22 per cent rate refused in an intimation nobody appealed, and the condonation window closing in March My company ticked s.115BAA in the return but Form 10-IC went in late, the CPC has taxed it at the normal rate, the rectification has been refused and the appeal time is long gone - what is actually left? 7 steps · 23 authorities · s.115BAA, s.115BAA(2), s.115BAA(3), s.115BAA(5) My employer treated the whole of my house rent allowance as taxable, and the processing centre has now done the same I paid rent to my mother for half the year and moved cities in October. Payroll allowed me nothing. How much of my house rent allowance is actually exempt, and will the claim survive being looked at? 7 steps · 18 authorities · s.10(13A), Rule 2A, s.192, Rule 26C

Explained in this library

What section 143(1)(a) does, in plain English, before you read what the courts made of it.

Answering a crypto notice when the AIS figure is not your income

The AIS shows crypto receipts far larger than anything I earned, and I have a notice. How do I answer it?

How long the processing centre has, and what a late intimation is worth

Is there an outer date by which the intimation under s.143(1) has to be sent, and what happens if it goes out after that?

It was uploaded on the portal and the e-mail address is dead

The communication went to an e-mail address nobody reads and was put on the portal. Was I served, or only issued?

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?

What CPC may adjust in an intimation, and the notice it has to give first

CPC has changed my return and raised a demand under s.143(1)(a). What was it allowed to adjust, and did it have to warn me first?