How the calculation works on Rs 7,50,000 / month
Rs 7,50,000 a month is rare air, founder or top-executive territory, and your effective rate is 23.6%. That's Rs 90,00,000 a year, in the top 35% slab. After the Rs 14,24,000 fixed amount and 35% on the income above Rs 70,00,000, your tax is Rs 21,24,000 a year, or about Rs 1,77,000 a month. In FY 2025-26 the same salary paid Rs 23,31,000, so you're Rs 2,07,000 a year better off.
That works out to roughly Rs 1,77,000 a month deducted from your gross, leaving you with Rs 5,73,000 take-home.
What changes if you're not salaried?
On Rs 90,00,000 a year, ordinary business income would be taxed Rs 31,40,000 against your Rs 21,24,000 on salary, and registered IT export income at 0.25% of proceeds would be Rs 22,500. At this level the difference between being taxed as salaried and on export income is Rs 21,01,500 a year.