Who in your family or relationship usually has the final say in how you spend money on large investments such as buying a car, or a house, or a household appliance?
Who [within your household] has the final say on spending money on large investments (such as: buying a refrigerator, a car, or a house)
Who [within your household] has the final say on whether your spouse spends time with his family, friends, or relatives?
Who in your family or relationship usually has the final say in how you spend money on food and clothing?