Giving two children the same allowance sounds fair until one is emptying the dishwasher, walking the dog, and folding laundry while the other has half as many responsibilities. Suddenly, equal pay can feel anything but equal, especially to the child doing more work. For parents, the sibling allowance question is really about deciding what the money represents: membership in the family, payment for work, or a combination of both. That distinction matters because children notice not only dollar amounts but also the rules behind them. A system that is predictable and explainable can prevent a few dollars from becoming a weekly argument about favoritism.
