I'm the primary custodial parent in WA state of our one daughter, we have it set up to alternate who deducts her from year to year. My ex is claiming he cant claim deductions on child care expenses or what he's put into savings for her over the last year unless I sign primary custodial rights over to him. Day care is always paid out of my checking account with the child support he gives me. Is this true that he has no ability to deductiouns even if it is his year to claim her? and also what exactly does primary custodial parent have power of if it's still joint custody?