At this age if your daughter is still living in your home you should have her pay for a few things on her own. That way when she moves out she will be ready to pay bills. Don't put too much on her so she can save some money.
They should be able to do their own laundry, make meals, help with household chores, and if they have a job paying rent isn't out of the question either. This isn't unreasonable. At 18 she's an adult,not a kid.