From the Summary: "In accordance with the Paris Protocol and Israeli domestic implementing legislation, Israel has been transferring tax revenues to the Palestinian Authority (PA) on a monthly basis. The Israeli Defense Cabinet decided on February 17, 2019, to freeze that portion of these revenues equal to expenditures by the PA in the previous year for payments to families of people killed, injured, or imprisoned for attacks on Israel. The government's authority to deduct amounts paid by the PA to terrorism operators and their families from its revenue transfers derives from a July 8, 2018, legislation. A precondition for freezing revenues is the submission of a yearly report by the Minister of Defense on such PA payments to the Ministerial Committee for Matters of National Defense and the Committee's approval. The Law does not expressly authorize the use of frozen funds for enforcement of judgments against terrorist act perpetrators or for furthering antiterrorism projects."
Law Library of Congress: https://www.loc.gov/law/