We have assumed that 12 months or more has elapsed since the order was made. The Family Courts only have very limited powers with regard to child maintenance, which is governed in the main by the Child Support Act 1991 (CSA 1991). The court retains a residual power in respect of parties outside of England and Wales, or where a party’s income is in excess of £156,000 gross pa, when the court can award a top up to the Child maintenance Service (CMS) maximum maintenance calculation, or where the parties have reached an agreement. Where an agreement is embodied in a court order, after 12 months, either party may apply