Um, lovemyfam, Ex is filing tax returns. I never said he wasn't.
And yes, he is working under an ABN in his own name. I looked him up on the public ABN register online and there he was.
He is doing the wrong thing. Plain and simple. He is using every tactic to avoid helping out financially with his only child. I will do whatever it takes to stop him shirking his responsibilities and leaving everything to me.