Tipping

[Accompong]

During my recent trip to Jamaica I went to several restaurants that did not allow you to add a tip to the bill so I had to tip in cash. This of course made me use up more of my cash than I had expected.
Why do they not allow you to add in the tip to your bill?
Thanks.

One reason might be that they want to keep the tip "off the book" as they pay GCT tax on revenue. At least I think that the tips are considered as revenue. Perhaps others might know better as I never go to a restaurant where they add tips.

Peace and Guidance