Every chore chart works for eleven days. Then a parent forgets to update it, a kid notices nobody is tracking, and the whole thing quietly dies. The failure is never motivation — it is maintenance cost.
The version that lasted in my house has three rules. Baseline contributions are unpaid, because being in a family is not a job. Paid work is a separate, posted list with real prices. And settlement happens on a fixed day whether or not anyone remembers to ask.
The fixed settlement day is the part people skip and it is the part that makes it survive. It removes the negotiation, the nagging, and the parent's memory from the system entirely.
Add one more thing: let them lose money. A kid who spends everything on Tuesday and wants something on Friday learns more in that moment than in any conversation you could have planned.