N.J. Stat. Ann. § 17:16I-7

No multiple-party account will be effective against an estate of a deceased party to transfer to a survivor sums needed to pay debts, taxes, and expenses of administration, if other assets of the estate are insufficient. A surviving party, P.O.D. payee, or beneficiary who receives payment from a multiple-party account after the death of a deceased party shall be liable to account to his personal representative for amounts the decedent owned beneficially immediately before his death to the extent necessary to discharge the claims and charges mentioned above remaining unpaid after application of the decedent's estate. No proceeding to assert this liability shall be commenced unless the personal representative has received a written demand by a creditor, and no proceeding shall be commenced later than 2 years following the death of the decedent. Sums recovered by the personal representative shall be administered as part of the decedent's estate. This section shall not affect the right of a financial institution to make payment on multiple-party accounts according to the terms thereof, or make it liable to the estate of a deceased party unless before payment the institution has been served with an order of court restraining the payment.