Income tax is charged progressively: different portions of your income are taxed at increasing rates, not your entire income at one rate.
How slabs work
If a slab of 10% applies from ₹6–9 lakh, only the income within that band is taxed at 10% — income below it is taxed at lower rates.
Deductions
Deductions reduce your taxable income before slabs are applied, lowering your total tax.
Estimate yours with the Income Tax Calculator.