We're in mediation trying to sort out finances. How should we agree on child maintenance amount? Stbxh doesn't like the number suggested by the CMS calculator and would prefer to pay less than half that amount. On what basis should we find the right number? One child, 13y, who wants to live with me 100%. In case it's relevant, it's not a needs-based divorce. There's enough assets so we both have decent houses. Basic wages are similar, but his annual wage is twice mine because he gets a good bonus. Thank you for any advice.