Income tax touches nearly everyone who earns in India, and most of the confusion isn't about the headline slab rates, it's about the mechanics: which ITR form actually applies to you, what a Section 143(1) intimation or a defective return notice under Section 139(9) means when it lands in your inbox, and whether the old or new regime actually works out cheaper once you run the real numbers rather than guessing. This section works through those mechanics directly, from picking a regime for FY 2026-27 to understanding what changes, and what doesn't, under the Income Tax Act, 2025.
A few threads run through most of what's here. Filing-season problems, a stuck refund, a mismatched Form 26AS, a return that came back defective, get their own step-by-step guides rather than one generic FAQ. Capital gains, surcharge, and the financial year versus assessment year distinction are each treated as the genuinely separate topics they are, since conflating them is where most mistakes start. If you're deciding between regimes or trying to make sense of a notice you've just received, that's usually the fastest place to start.