Dp has 4 kids. Two live with us 125 ish nights per year. One lives with us full time and won't have overnights with her mum but does see her on our insistence. The other dc doesn't see us at all at the moment.
Dp been paying over CSA rates on a voluntary basis for 6 years for all four kids and loads of extras. Things changed with regards to two other kids a few months back.
He has spoken to his ex about amending CSA payments now that we have a child full time. We also have my ds living with us full time which we know can be taken into account by CSA but we've never stopped anything for his ex because of it (I get no maintenance but work full time to support him for last 10 yrs).
Sensible suggestion seems to be to "disregard" the two kids who live with each patent and don't see the other rather than dp pays some and his ex pays some. Dp then pays CSA rates or above for other two.
Dp ex doesn't want to do this however. Dp has spoken to CSA who don't seem to have a definitive answer of what is the right way to deal with it!
Anyone else have any experience of this?