A lot of the time I give quotes including taxes. Every once in a while, someone is curious about what the tax is on a service.
I was messing around the other day and came up with this Javascript function. It takes in the total amount, the tax in percent, and returns the cost before tax.
1 2 3 4 | function figureBeforeTax(amount, tax) { return Math.round((amount)*(100 / (100 + ((tax/100)*100)))*100)/100; } |