The attached two articles outline the levels of capital assets the CMS can assess, and how they assess it, since changes made in 2018. For the first one, click on Go To Download top right. The second one )linked below) gives an example of how it's calculated monthly with assets included.
Pending change in child support calculations – Assets return to generate a notional income - Family Law in Partnership
Child Maintenance calculations - what assets are taken into for the calculation - advice from James Pirrie of Family Law in Partnership - E:[email protected]