Commentary on Sections Maintenance calculations Section 17: Power to regulate supersession
113.This section replaces subsections 17(2) and 17(3) of the Child Support Act 1991. Section 17 allows a maintenance decision to be superseded by a new decision, where, for example, there has been a change of circumstances.
114.These changes provide a regulation-making power to Secretary of State in relation to the supersession of decisions.
115.New subsection (3) sets out that regulations may include:
	Provision about the cases and circumstances in which a decision may be superseded, which may include a restriction on superseding a decision as a result of certain changes of circumstance. This change enables the introduction of fixed term annual awards, where a change in circumstance will only be actioned during the year if there has been a large change in income, or where the change is fundamental to the maintenance calculation. This will also enable regulations to contain provisions which set out the circumstances in which earlier changes of circumstances (which had not led to a supersession) can be taken into account.
	Procedural aspects of supersessions.