Another bit of advice, get all support/reimbursement/add-on payments by check. Make a copy before it's deposited and keep it with the deposit slip. Better yet, get a copy of the canceled check each month. I was unaware that my ex was making deposits by cash. I have no proof that it was actually him making the deposits and that may cause a delay in my refi. I'm in the process of closing my loan (finally!) but am being asked for canceled checks. Thank goodness my support order covered a retroactive period and states the amount that he paid each month. That covers the time period in question along with my bank statements.