Subject to R. 4:30A (entire controversy doctrine), the plaintiff in the complaint or in an answer to a counterclaim denominated as such and the defendant in an answer setting forth a counterclaim may join, either as independent or as alternate claims, as many claims, either legal or equitable or both, as he or she may have against an opposing party. There may be a like joinder of claims when there are multiple parties if the requirements of R. 4:28 (joinder of parties), R. 4:29 (joinder of multiple parties), and R. 4:31 (interpleader) are satisfied. There may be a like joinder of cross-claims or third-party claims if the requirements of R. 4:7 (counterclaim and cross-claim) and R. 4:8 (third-party practice) respectively are satisfied.
Except as provided by N.J.S. 2A:50-2 and 2A:50-22 (debt secured by mortgage) and except as otherwise provided by R. 4:7-5 (mandatory crossclaims), if a claim is one heretofore cognizable only after another claim has been prosecuted to a conclusion, then the 2 claims may be joined in a single action, but the court shall grant relief therein only in accordance with the relative substantive rights of the parties. In particular, a plaintiff may state a claim for money and a claim to have set aside a conveyance fraudulent as to plaintiff, without first having obtained a judgment establishing the claim for money.