Taxi's and restaurant I do.
But not when the fare is exhorbitant compared to what I am used to. Meaning the driver used the most expensive route or went the long way.
In restaurant, US is usually 10-15% and I use around 10% for Oz. But when the service sucks, I may not tip.
In my native country, tipping isn't required. But if there's good service, I tip too but not when the bill already says service charge.![]()