N.J. Stat. Ann. § 46:8-21.2

4. An owner or lessee may not require more than a sum equal to 1 1/2 times 1 month's rental according to the terms of contract, lease, or agreement as a security for the use or rental of real property used for dwelling purposes. Whenever an owner or lessee collects from a tenant an additional amount of security deposit, the amount collected annually as additional security shall not be greater than 10 percent of the current security deposit.