Standard deduction??

Std. deduction means no need for any proof for this deduction and it available to all salaried person without considering salary amount 

for a person having salary of 3,00,000 his salary after std deduction will be 260000

 standard deduction of Rs 50000 for 19,200 as transport allowance and Rs 15,000 as medical reimbursement, which employees

without any proof u can claim deduction.