N.Y. Civil Practice Law & Rules § 1402: Amount of contribution

§ 1402. Amount of contribution. The amount of contribution to which a

person is entitled shall be the excess paid by him over and above his

equitable share of the judgment recovered by the injured party; but no

person shall be required to contribute an amount greater than his

equitable share. The equitable shares shall be determined in accordance

with the relative culpability of each person liable for contribution.