IncomeTax · 6 min read
Income Tax Notices Explained: 139(9), 142(1), 143(2) & 148
By the India Law Simplified editorial team · Verified against primary government sources (bare Acts & official portals) · Last updated 2026-04-11
Not every income tax notice is serious — but you must respond to each within its deadline. Here is what the four common notices mean and what to do.
1139(9) defective return & 142(1) inquiry
A Section 139(9) notice says your filed return has a defect (e.g. a mismatch or missing detail). You usually get 15 days to correct and re-submit. It is procedural, not an allegation of wrongdoing.
A Section 142(1) notice asks you to file a return (if you haven't) or to produce specific information/documents. Respond fully and on time; ignoring it can lead to a best-judgement assessment.
2143(2) scrutiny
A Section 143(2) notice means your return has been picked for detailed scrutiny. It must be served within the prescribed period after you file. The Assessing Officer will examine your income, deductions and exemptions and may ask for evidence.
This is the stage to engage a CA or tax advocate, keep your documentation ready, and respond to each query precisely through the e-proceedings portal.
3148 reassessment
A Section 148 notice reopens an earlier year because the department believes income escaped assessment. Under the current law it is preceded by a Section 148A procedure (a show-cause and a chance to explain) before the notice is issued, with time limits depending on the amount involved.
Respond carefully — there are strong procedural defences if the reopening is not validly done. Get professional help promptly.
Frequently asked questions
Does a 142(1) notice mean I'm in trouble?
Not necessarily — it is an inquiry to verify your return. A complete, honest response often closes the matter without escalating to scrutiny.
Can I challenge a 148 reassessment?
Yes. Section 151 governs the sanction required to issue the notice, and you can object to the reopening; appeals against the resulting order go to the Commissioner (Appeals) under Section 246A. Consult a tax professional quickly.
Is this legal advice?
No. Notice procedures and time limits are technical and changing. Verify with a CA or tax advocate for your specific notice.
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