How does GEM-CAR calculate taxes on estimates and invoices?

GEM-CAR calculates taxes on the total amounts for parts and labor. If the items are divided between different tax groups, GEM-CAR then makes totals for each group and calculates taxes for each of them.

GEM-CAR rounds to $0.01 amounts equal to or greater than $0.005. As for tax calculations, when there are several items on estimates or invoices, GEM-CAR rounds the total tax amount.