Residents will to find about £50 extra for all their council taxes, after a full Horsham District Council meeting confirmed its own rise of 1.2 per cent.
The district rise will add about £1.63 a year to bills.
By far the largest hit will come from West Sussex County Council, which has confirmed a rise of 3.95 per cent and has by far the largest budget and biggest council tax bills.
The combined effect of both increases will be to add about £50 a year to the average council tax bill, once a 1.98 per cent in Sussex Police tax and parish precepts are added.
The Government pledged an extra £6.2million to West Sussex after protests from councillors about cuts in funding from central government.
But the council decided to use the money to prop up services rather than reduce the council tax increase.
And it has warned that despite the extra money savings will still have to be made because in 2016-17 it will have a shortfall of £44 million while facing increasing demand for services.
The Horsham district council tax rise was approved by full council on February 24 after a recommendation from cabinet.
Both councils protested to the Government about big cuts in support from central taxation that stretched their budgets.
The West council tax increase includes the two per cent charge announced by Chancellor George Osborne in November 2015 to help councils meet the needs of an increasingly ageing population.
The increases take effect from April 1. This week the Chancellor George Osborne warned that further spending restrictions might be needed from the public sector because of global economic turmoil and slower growth.