Ruto has also faced criticism for increasing allocations to his office and the deputy president's while cutting petrol subsidies.
The proposals, contained in a draft law known as the finance bill, will be considered by parliament alongside the 2023-24 budget to be presented by the finance minister on Thursday.
The president and his allies have defended the tax hikes, saying East Africa's economic powerhouse needs more revenue to avert a debt crisis and fund affordable housing projects.
One man in Githunguri, who declined to give his name, defended the finance bill, saying Ruto was simply trying to leave his mark by constructing affordable housing.
Fruit vendor John Nyaga, another Ruto voter, complained that the tax hikes would leave his customers with even less money to spend.
Persons:
William Ruto, Ruto, Jacqueline Wambui, Ruto's, Uhuru Kenyatta, Raila Odinga, John Nyaga, Duncan Miriri, Aaron Ross, Ed Osmond
Organizations:
REUTERS, Ruto, Thomson
Locations:
Kiambu County, Kenya, GITHUNGURI, Nairobi, Ukraine, Githunguri