01Worked example
For ₹15,00,000 gross salary in the new regime, taxable income is ₹14,25,000 after ₹75,000 standard deduction. Slab tax is ₹93,750; cess is ₹3,750; total is ₹97,500. With ₹1,50,000 entered deductions in the old regime, taxable income is ₹13,00,000 and total tax is ₹2,10,600.
02Assumptions and limits
Tax year 2026–27 means income from 1 April 2026 to 31 March 2027. This simplified calculator excludes marginal relief, surcharge, special-rate income and senior-citizen old-regime thresholds. Near the ₹12 lakh new-regime taxable-income rebate boundary it can overstate tax. Above ₹50 lakh taxable income it can understate tax. Do not use those results as filing amounts. Displayed amounts round to whole rupees, not statutory return rounding.
03How to read the result
The model assumes a resident salaried individual below 60 with ordinary slab-rate income. New-regime deductions entered in the old-regime field are ignored. The monthly figure is annual estimated tax divided by 12, not a payroll withholding schedule.