hi there,
ok if you are self employed at the moment, either sole trader or partnership the csa will look at your tax return, to make a decision based on maintenance.
if however you form a limited company you will presumably go back to being a PAYE employee of the company, therefore the csa can then make a maintenance decision based on your wage slips.
please dont get me wrong i have three children from 2 relationships, and the csa are lovely people NOT, i pay maitnenace for my children even though the csa have reassessed me at £0 as i am now self employed and will reassess at tax return.
so if you look at this in a logical way , self employed ie tax return assessment has advantages, however if you form limited company and earn a very low salary, get a reassessment on that then pay yourself dividends at the lower income tax rate, this may be beneficial.
i hope that makes sense
regards
martin