N.J. Stat. Ann. § 54:4-119

The owner of the land proposed to be conveyed to any municipality under sections 54:4-114 to 54:4-121 of this title shall pay all expenses in connection with obtaining a free and clear title unencumbered by any lien, rights or charges against the same, and the municipality in payment for said deed, shall credit such owner with payment on account of any past-due taxes, assessments and other municipal charges on property conveyed, and any surplus shall be credited in payment of past-due taxes, assessments and other municipal charges on other property held by such owner located in the municipality, the municipality paying no cash in the transaction for the deed.