It is very important that you keep records of payments you make or receive for alimony and child support. If you are paying, pay by check and keep all canceled checks. If you cannot prove you paid it, you might as well have not paid it. If you are receiving payments, keep a running account in a permanent place. If you cannot prove what you did get, the court might not believe you when you testify about what you did not get. It is easier for both parties to have payments deducted from the paycheck of the person who is paying.
A form for keeping track of payments in included in the Support Account Sheet Appendix.