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Tipping 'nudges' are now popping up on DoorDash. If you don't leave a gratuity, you'll hear about it.
(www.businessinsider.com)
This is a most excellent place for technology news and articles.
At that point it's not a tip it's a delivery charge.. just call it what it is.
But they won't because then they'd have to pay tax.. Although the taxman is going to notice sooner or later anyway..
the taxman does not notice, because the tax is paid. it's paid by the drivers.
Tips aren't taxed.
https://www.irs.gov/newsroom/tip-income-is-taxable-and-must-be-reported