Hi Rupali I m chinmaya & I m a CA student. There is a slab for professional tax calculation and if your SALARY exceeds this limit PT will be deducted from your salary. SALARY will include - Basic Variable Dearness Allowance incentives and all other ALLOWANCES EXCEPT CONVEYANCE ALLOWNANCES. Following is the Slab- Salary PT amount 3000-4999 Rs. 30 5000-7999 Rs. 60 8000-9999 Rs. 90 10000-14999 Rs. 150 15000 & Above Rs. 200 Professional Tax is calculated on end salary that means the days for which u have worked and got salary. If it is whole month then PT will also be charged on whole month.