N.J. Stat. § 54:4-8.75g
When title to a homestead for which a Stay NJ property tax credit is claimed, is held by an eligible claimant and another or others, either as tenants in common or as joint tenants, the eligible claimant shall not be allowed a Stay NJ property tax credit in an amount in excess of the eligible claimant's proportionate share of the taxes assessed against the homestead, which proportionate share, for the purposes of P.L.2023, c.75 (C.54:4-8.75a et al.), shall be deemed to be equal to that of each of the other tenants, unless it is shown that the interests in question are not equal, in which event the eligible claimant's proportionate share shall be as shown. Nothing herein shall preclude more than one tenant, whether title be held in common or joint tenancy, from claiming a Stay NJ property tax credit from the taxes assessed against the property so held, but no more than the equivalent of one full Stay NJ property tax credit in regard to such homestead shall be allowed in any year. In any case in which the eligible claimants cannot agree as to the apportionment thereof, such Stay NJ property tax credit shall be apportioned between or among them in proportion to their interest. Property held by husband and wife, as tenants by the entirety, shall be deemed wholly owned by each tenant, but no more than one full Stay NJ property tax credit in regard to such homestead shall be allowed in any year. Right to claim a Stay NJ property tax credit hereunder shall extend to a homestead the title to which is held by a partnership, to the extent of the eligible claimant's interest as a partner therein, and by a guardian, trustee, committee, conservator or other fiduciary for any person who would otherwise be entitled to claim such Stay NJ property tax credit hereunder, but not to a homestead the title to which is held by a corporation; except that a residential shareholder in a cooperative or mutual housing corporation shall be entitled to claim a Stay NJ property tax credit if the residential shareholder is otherwise eligible to receive it, to the extent of the proportionate share of the taxes assessed against the homestead of the corporation, or any other entity holding title, attributable to the residential shareholder's unit therein.
N.J.S. § 54:4-8.75g