When settling the bill after brunch with wife and daughter my thoughts went to server tips. Normally in a sit down (crip humor?) restaurant I tip 20 percent for service. I do not pay a tip on the tax applied to the bill as it has nothing to with the meal and/or service. I know, I know it's a piddling sum, but it is a tax and there is no reasonable thought process dictating the tax deserves a gratuity. On matters concerning tips for service offered to folks with a disability do you tip persons who do something to make your shopping experience more pleasurable? For instance, a store employee assists by toting your packages to your car--do you commonly tip for the extra service? I attempt, however, some businesses have a no tip policy.