If they say yu have to pay 300 quid a month you will be on a relatively good wage. She has to cloth, bath, heat the house etc and you have to contibute towards that. If say she is privately renting 2 beds for 600 quid, add council tax on top of that, then electric etc before hse even gets into food and clothes that could easily be a grand a month. So say you have to pay your quarter of that to bring her up. CSA are pretty fair, they wont make you pay more than you can afford and if she is on benefits she will none of that.
If she is on benefits, tell her to put you on the birth certificate and you can keep paying her in person, without the agency stepping in and she will keep getting the money. If she says no and you have evidence you have been giving her money, threaten to dob her into the benefits agency.
Leigh, the mother doesnt win everytime at all. There are hundreds upn thousands of mums who get diddly squat, eg me. I even lost most of the house contents that I PAID For when we split up.