Petitions/Cap income used to calculate Child Maintenance to Minimum Wage over a 40hr week
StatusOngoing
Opened8 May 2026
Closes
Government response
Parliamentary debateNot eligible
Milestones

We call on the UK Government to introduce a fair and sustainable cap on the income figure used to calculate CMS payments. We propose that the maximum weekly income considered for CMS assessments be limited to the equivalent of the National Minimum Wage multiplied by a 40-hour working week.

We believe this cap would ensure that maintenance obligations are calculated based on a reasonable and widely understood benchmark of full-time work. Those who attempt to improve their situation by working additional hours or taking on extra employment may find themselves penalised in subsequent assessments, as increased earnings can lead directly to higher maintenance payments. By capping the income used in calculations in line with minimum wage and a standard working week, we believe the system would become fairer and more predictable.

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Constituency engagement ranking

Henry Tufnell
1Henry Tufnell MP
Mid and South Pembrokeshire
26
Jo White
2Jo White MP
Bassetlaw
9
Jerome Mayhew
3Jerome Mayhew MP
Broadland and Fakenham
9
Karl Turner
4Karl Turner MP
Kingston upon Hull East
9
Dame Diana Johnson
5Dame Diana Johnson MP
Kingston upon Hull North and Cottingham
9
Mark Pritchard
6Mark Pritchard MP
The Wrekin
9
Kanishka Narayan
7Kanishka Narayan MP
Vale of Glamorgan
9
Perran Moon
8Perran Moon MP
Camborne and Redruth
8
Mike Tapp
9Mike Tapp MP
Dover and Deal
8
Tony Vaughan
10Tony Vaughan MP
Folkestone and Hythe
8