Is there any particular reason why retailers couldn't print both the total price and how much of it is sales tax on the same price tag? The legislative intent s

Is there any particular reason why retailers couldn't print both the total price and how much of it is sales tax on the same price tag? The legislative intent seems to me that they don't want taxes to be absorbed by retailers[0], not that they want to force people to multiply things by some percentage in their head. [0] Read: subsidized by other places with lower tax rates