How Income Tax Works
Slabs, the two regimes, and how your salary actually gets taxed — in plain language.
Income tax feels mysterious, but the core mechanic is simple once you grasp one idea: India uses a progressive slab system, where different portions of your income are taxed at different rates — not your whole income at one rate.
The single most important (and most misunderstood) concept: *moving into a higher tax slabIncome ranges taxed at progressively higher rates. does not tax your entire income at that higher rate — only the income within each slab is taxed at that slab’s rate.* People panic that a raise willArranging how your wealth passes on after death. “push them into a higher bracket and leave them worse off” — this is a myth. If the slab boundary is, say, ₹10 lakh and you earn ₹10.5 lakh, only the extra ₹50,000 is taxed at the higher rate; the rest is taxed exactly as before. So earning more always leaves you with more after tax — your marginal rate (on the last rupee) is higher than your effective rate (on the whole). Understanding this dissolves a lot of needless tax anxiety and bad decisions (like refusing a raise or bonus). India also currently offers two regimes — the old regime (higher rates but many deductions/exemptions) and the new regime (lower flat rates but almost no deductions) — and you choose the one that leaves you paying less (next lesson). Grasp slabs + the two-regime choice, and the rest of tax planning becomes navigable rather than frightening.
- Progressive slabs — different portions of income are taxed at rising rates, not the whole income at one rate.
- The bracket myth — a raise never makes you worse off; only income within the higher slab is taxed at its rate.
- Marginal vs effective — your top slab rate (on the last rupee) is higher than your overall (effective) rate.
- Two regimes — old (higher rates, many deductions) vs new (lower flat rates, almost no deductions); pick the cheaper.
ExampleSuppose slabs tax income 0–3L at 0%, 3–7L at 5%, 7–10L at 10%, above 10L at 15%. On ₹11 lakh, you DON’T pay 15% on all ₹11L. You pay 0% on the first 3L, 5% on the next 4L, 10% on the next 3L, and 15% only on the last 1L. A bonus pushing you to ₹11.5L taxes just the extra ₹50,000 at 15% — you still keep most of it. The “higher bracket” fearThe two emotions that move markets and ruin accounts. was unfounded.
Key takeawayIncome tax uses progressive slabs: each portion of income is taxed at its slab’s rate, not the whole at one rate — so a raise never leaves you worse off (the bracket myth). Your marginal rate (last rupee) exceeds your effective rate (overall). India offers two regimes — old (deductions) vs new (lower flat rates) — choose the cheaper.
FAQs
Will earning more push me into a higher bracket and reduce my take-home?
No — that’s a persistent myth. Only the income *within* the higher slab is taxed at the higher rate; everything below is taxed exactly as before. Earning more always increases your after-tax income. Never turn down a raise or bonus over “bracket” fears — your effective (overall) tax rate rises only gradually, not in a cliff.