Most people hear "income tax notice" and assume the worst. In practice, the large majority of notices are triggered by an automated system flagging a specific, identifiable mismatch — not a manual decision that you've done something wrong. Knowing which trigger applies to your notice changes the entire conversation.
Income reported doesn't match Form 26AS or AIS
This is the most common trigger by far. Your employer, bank, or mutual fund house reports your income and TDS to the department, and the system automatically cross-checks this against what you declared in your return. A forgotten interest credit or an unreported capital gain shows up as a mismatch, generating a notice.
High-value transactions without a matching income profile
A large property purchase, a significant cash deposit, or substantial credit card spending that doesn't align with your declared income can trigger a notice asking you to explain the source — this is the department's data-matching system working as designed, not targeted scrutiny.
Non-filing despite reportable transactions
If TDS was deducted on your income, or you had transactions that appear in the department's data, but no return was filed at all, that gap itself is a common trigger — the system flags the absence of a filing as readily as it flags an inconsistency within one.
Random scrutiny selection, less common than assumed
A small percentage of returns get selected for detailed scrutiny based on risk parameters unrelated to any specific error — this exists, but it's a much smaller share of actual notices than the mismatch-driven ones above, despite being the version people worry about most.
If you've received a notice and aren't sure which of these it actually is, C S Rushil & Co. can identify the real trigger and draft the correct response. Book a free consultation.