Is it rude to not tip for takeout?

What the etiquette expert says: Just like at coffee shops, tipping on takeout orders is optional, says Orr. “There isn't an expectation that you tip since you haven't [received service].” If you're paying with cash, you can always round up or leave some change as a gesture of good will, but that's totally your call.

How much should you tip for carryout?

Generally, Gottsman says, customers should plunk down at least a few dollars into the tip jar for smaller orders, but up to 20% for especially large or complicated orders.