Proposed Bill No. 5133 seeks to amend section 12-700 of the general statutes to increase the highest marginal rate of the personal income tax. Specifically, the bill proposes to raise this rate from six and ninety-nine-hundredths percent to seven and ninety-nine-hundredths percent. This change is intended to adjust the tax structure to potentially increase revenue for the state.

The bill does not include any deletions from the current law but focuses solely on the insertion of the new tax rate. The statement of purpose emphasizes the goal of increasing the highest marginal tax rate, reflecting a legislative effort to modify the state's tax policy.