Do you pay commission on gross profit?

Do you pay commission on gross profit?
It's not typical in any industry that pays commission. To be clear, there is a different between gross profit and gross sales. Either way, paying commission on either is not the standard.Gross profit and gross sales implies a number beforing taking out sales taxes that a company must pay.Typically, commission is paid on net profit or net sales because the "sales person" because the company has to pay the taxes and the sales person had no bearing on these taxes.Look at it this way. When tipping (which is really like paying commission) a waiter/waitress, you should tip on the amount before taxes are added not after. Taxes are a product of the state laws, etc, not the business charging the taxes. The waiter has noting to do with something the state charges.