Model scope and reference starting points
Historical model: FY 2025–26 (AY 2026–27). Resident individuals with ordinary salary or regular employment-pension income only, up to ₹50 lakh gross annually. This is not a current-year rules update or an ITR calculator. Special-rate income (including capital gains), business income, non-resident rules, surcharge, family pension, and deductions other than those shown are not modeled. The standard deduction is applied automatically. Enter eligible deduction amounts, not payments that have not been checked for eligibility. Outputs include 4% cess and new-regime rebate-threshold marginal relief, before final statutory tax rounding.
Official references checked on 2026-10-15: Income Tax Department, salaried individuals for AY 2026–27 (slabs, rebate thresholds and cess), and Budget 2025 announcement (₹75,000 new-regime salary standard deduction and the ordinary-income qualification). These documentary checks are not a complete tax-law review or validation for your return. Check the applicable assessment year and official filing calculation.
Reproduce a CTC reconciliation
Illustration: CTC ₹12,00,000, employer PF ₹21,600, no bonus or other employer costs, and employee PF ₹21,600. Annual gross cash salary is ₹11,78,400; monthly gross is ₹98,200. With no modeled new-regime income tax at this salary in this historical model, regular monthly in-hand is ₹96,400. This is arithmetic from the stated inputs, not an estimate of what all ₹12 lakh offers pay.
Add a ₹1,20,000 bonus within the same CTC and regular monthly gross falls by ₹10,000. It does not increase total annual gross pay: it changes the timing and certainty of the cash flow.