Question to the Department for Work and Pensions:

To ask the Secretary of State for Work and Pensions, what estimate he has made of the number of parents who did not report income increases of 25 per cent or more to Child Maintenance Services in (a) 2013, (b) 2014, (c) 2015, (d) 2016 and (e) 2017.

The Department has not made any estimate of the number of parents who do not report increases of 25% or more to their income to Child Maintenance Services. Such changes, where not reported, will be picked up from income data obtained by HMRC at annual review. Where a parent is required to report a change in income but does not, then this change can be backdated to when it occurred.