Critics of child support, such as father's rights groups, complain that in most US states, and the United Kingdom, there is no requirement that the child support money be used for the child. Barring unusual circumstances, most jurisdictions do not require accountings on the request of a child support payor. The custodial parent also has a duty to support the children and child support payments on average are significantly less than the cost of raising a child. In ten U.S. states, an accounting of child support money can be required under certain circumstances.