NSW Premier Gladys Berejiklian is rewarding every Coalition MP with promotions that deliver salary sweeteners of between $10,000 and $110,000 a year on top of their base wage.

Seven fewer Coalition MPs in Parliament after the last election means the Premier has appointed all 65 Coalition MPs as ministers, parliamentary secretaries, committee chairs or to other parliamentary roles.

They will all receive position payments and expense allowances for these roles, on top of their $165,000 base salary.

The new, 24-member NSW cabinet was sworn-in earlier this month. Credit:AAP

Fifteen backbenchers, including eight brand new MPs, will each lead a parliamentary committee tasked with reviewing proposed laws and scrutinising public sector performance, earning them up to an extra $20,600 a year.