Top definition
The price of the extra things you buy in a store because you happen to have your kids in tow.
Kid: Hey, those keychains are cool!
Cashier (@ checkout): Those keychains are $4.99
Parent: Well, there's another $5 Kid Tax!
by O. Hugh Aytwontu April 28, 2012
Get the mug
Get a Kid Tax mug for your father-in-law Vivek.