Yes, it's a tax thing. A lot of restaurants base your taxes on your gross sales,...

		mikbetk on June 13, 2011 \| parent \| context \| favorite \| on: Why I won't be using Groupon again.. A consumer pe... Yes, it's a tax thing. A lot of restaurants base your taxes on your gross sales, assuming you will get 10-15% in tips. Coupon deductions are not calculated in this gross.