She has signed and notarized a document stating she does not intend to collect the child support payment. Will this document be valid in court and prevent me from owing back child support in the future?
While I am not licensed to practice law in your state, I can give some general guidance on the issue.
No matter how well-intended; no matter how carefully crafted; no matter how many times notarized; it boils down to just this: Out-of-court agreements which purport to modify existing child support/custody orders generally aren’t enforceable.
You must obtain the court’s “blessing,” in the form of an order, before any such agreement is valid and enforceable. The parties aren’t free to work out a “side-deal,” or some other out-of-court “understanding,” that departs from the existing court order.
Side-deals are generally unenforceable, may subject you to contempt, and can create serious problems for you down the road. As such, I would recommend that you enter into a consent order but file it with the court.
Remember, I am unable to provide you with anything more than divorce tips, so please consult a domestic litigation attorney in your area to obtain specific advice as to the laws in your state and how they impact your potential case.