As of August 31, 2023, the Trust Registration Service reported 633,000 registered trusts and estates, with 75% registering between April 2022 and March 2023. Self-assessment returns by trusts and estates fell by 3% in 2021-22, part of a 12% decline since 2016-17. Total income in 2021-22 reached £3,075 million, surpassing pre-pandemic levels.