Guernsey's Policy and Resources Committee is opposing plans to increase taxes by £28 million over four years, as part of the Medium Term Financial Plan.
Deputy Emilie Yerby has put forward an amendment to put up tax by £9 million in 2018, and then by £18 million for three years after.
A proposed change to the Medium Financial Plan would see taxes increased by £3 million next year, £7 million in 2020, £10.5 million in 2021 and £14 million in 2022.
Deputy Yerbie's plans would see an extra £28 million for the States over four years, the equivalent to £750 over four years for each tax payer.
Deputy Gavin St Pier, President of the Policy and Resources Committee, says the move is "totally unwarranted and lacks any supporting evidence".
The States are set to debate its financial plan for the next four years next week.