Kamath was born on December 7, 1977, in Kundapura to D. Vaman Kamath and Tara V. Kamath. He has four siblings. He completed his primary and high school education in Canara School. He completed his BCom from Canara College, Mangalore. Kamath joined the Rashtriya Swayamsevak Sangh in his childhood as a volunteer.

Kamath served for a year as the general secretary of the Mangalore South BJP unit. In 2017, he was elected as Member of Legislative Assembly by a record number of 86,545 votes.^{[citation needed]}

Kamath founded Sevanjali Charitable Trust to serve the poor and helpless 17 years ago. The trust supports more than 70 elderly people financially,  school fees to the poor and meritorious students, and hospital expenses for the poor. Blood donation camps are conducted several times every year. The trust matched ‘Stem Cells‘ for a needy child, from Mumbai. Trust has adopted Kadalakere Government School, Moodbidri where more than 150 economically poor students are studying.

He's involved in Padavinangadi Ganeshostsava, Anna Santarpane by Mangala Cashew industries, Bhatkala Ganapathi temple, Car street Venkatramana Temple, etc. He is also the director of Bhuvanendra Cooperative Bank Mangalore. He has served as director of the Digantha Press^{[citation needed]}. He has also renovated the Siddapura Venkataramana Education Trust at Kundpaura.

He was accused of interfering into vaccination processes during the COVID-19 vaccine role out. ^[2] and was also stated to have taken credit for work done by John Richard Lobo. ^[3]

Kamath forced Gerosa School Management to remove a teacher and also urged Hindu parents not to admit their children to Christian Missionary Schools. ^[4] And also used schoolchildren to slogan against the school which is a punishable offence. In this regard, an FIR was registered against him for which he had to move court and secure anticipatory bail from getting arrested. ^[5]