Question to the Department for Work and Pensions:

To ask the Secretary of State for Work and Pensions, what steps she is taking to help ensure that the CMS child maintenance calculation adequately reflects the (a) living expenses and (b) income of both parties.

The Child Maintenance Service (CMS) operates on the principle that both parents have financial responsibility for their child, including their food and clothing, as well as contributing towards the associated costs of running the home that the child lives in.

The calculation represents an amount of money that is broadly commensurate with the amount that a paying parent would spend on the child if they were still living with them, irrespective of the income or assets of the receiving parent.

The CMS will assess how much the paying parent should pay the receiving parent, which in most cases is based on a percentage of the paying parent's gross annual income. The income of the receiving parent is not taken into consideration as they are already contributing as the child's primary caregiver and their income should not remove the responsibility of a paying parent to support their child.

A review is ongoing to look again at the child maintenance calculation to ensure it is fit for purpose and fair for both parents in light of societal changes since it was last looked at.