Revised Professional Tax (P.Tax) in Chennai – Tamil Nadu 2018. Professional Tax (P.Tax) tariff for Chennai location is changed as follows. New slab effective date is 1st April 2018.  Please note that P.Tax tariff for Chennai location is changed as follows  Up to 21,000/=                                 NIL 21,001/= to 30,000/=                 Rs: 135.00 30,001/= to 45,000/=                 Rs: […]