High cost area supplements Table 17: From 1 April 2018 to 31 March 2021 Area 1 April 2018 1 April 2019 1 April 2020 Inner London 20% of basic salary, subject to a: minimum payment of £4,326 and a maximum payment of £6,663 20% of basic salary, subject to a: minimum payment of £4,400 and a maximum payment of £6,777 20% of basic salary, subject to a: minimum payment of £4,473 and a maximum payment of £6,890 Outer London 15% of basic salary, subject to a: minimum payment of £3,659 and a maximum payment of £4,664 15% of basic salary, subject to a: minimum payment of £3,722 and a maximum payment of £4,743 15% of basic salary, subject to a: minimum payment of £3,784 and a maximum payment of £4,822 Fringe 5% of basic salary, subject to a: minimum payment of £1,000 and a maximum payment of £1,733 5% of basic salary, subject to a: minimum payment of £1,017 and a maximum payment of £1,762 5% of basic salary, subject to a: minimum payment of £1,034 and a maximum payment of £1,791
