Thank you for visiting the CMSAS Limited website. Please note, we are NOT the Child Maintenance Service (CMS). If you need to contact the CMS, the number for an existing case with the CMS is 0800 171 2345 and for a new case is 0800 988 0988 or you can go to their website here: CMSAS Limited consultants are specialists in the Statutory Scheme of child support, as administered by the Child Maintenance Service. We would like to make you aware that we are not the Child Maintenance Service (CMS). We are a private company that provide a chargeable service of support, guidance and advice to both Receiving and Paying Parents, with Child Maintenance issues, assessments, appeals, tribunals and all Child Maintenance matters pertaining to the CMS (Child Maintenance Service) and/or HMCTS (Her Majesty’s Courts and Tribunals Service), including where difficulties develop with the CMS and/or HMCTS.

What is a mandatory reconsideration notice?

Most decisions made by the Child Maintenance Service (CMS) can be appealed through an independent appeal tribunal; the First Tier Tribunal (Social Entitlement Chamber).

Before you are able to appeal, you must first ask the CMS for a revision, asking the CMS to reconsider their decision. This is called a ‘mandatory reconsideration notice’. To ensure you have the right of appeal, you should request a mandatory reconsideration and you should do so within the time limit for a revision.

The CMS can revise a decision on any grounds if:

  • a person applies within 30 days of the decision, (or of the date an accidental error in the decision, or in the record of the decision, was corrected); or
  • a person applies for a variation within 30 days, provided the grounds for a variation existed from the date of the decision being revised; or
  • the CMS initiates the revision within 30 days of the original decision

To apply for a revision on any grounds, you do not have to provide a reason for challenging the decision. It is enough that you think the decision is wrong.

If you appeal without first seeking a mandatory reconsideration, the CMS can treat the appeal as if it were a request for a mandatory reconsideration. If the CMS does not do this, ask for a mandatory reconsideration as soon as possible, explaining why it is late, if necessary.

The CMS issues a letter, outlining its response to your request (a ‘mandatory reconsideration notice’). Two copies are sent – you must send one to the First Tier Tribunal with the appeal.

Please Note: The CMS can correct an accidental error in a decision or in the record of a decision at any time. A mandatory reconsideration of the corrected decision must be requested before an appeal to the First Tier Tribunal can be made.

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