Home » Public bodies » Child Maintenance Service (CMS)
Works out and collects child maintenance when parents who live apart cannot agree a private arrangement.
Part of: Department for Work and Pensions
Monday to Friday, 8am to 6pm. You can also contact it through your online account. There is a different number for Northern Ireland.
We only list official numbers. Beware of websites showing 084, 087, 09 or 118 numbers that connect you to a public body at a premium rate.
Child maintenance is how a child's living costs are shared when one parent does not live with them. Parents can agree it privately or use the Child Maintenance Service. Northern Ireland has its own Child Maintenance Service.
Contact data source: GOV.UK, Open Government Licence v3.0, updated 12 October 2026.