Payroll is an expense that gets deducted from revenue before calculating taxes.
They pay employer contributions/insurance/deductions but you pay the tax on it. It’s to avoid double taxing that money (corp pays tax and you pay tax).
Edit for replies: yes, they pay payroll tax but that is based on payroll, and is a percentage of payroll. The other replies were referring to bottom line tax and revenue/profit. Maybe I should have been clearer but I was trying to keep it easy and not muddy the waters.
How Long It Takes the Largest Companies in America to Make One Employee's Average Annual Salary ( lemmy.world )
Found on imgur imgur.io/gallery/gqItf8e