Connecticut State Income Tax 2025 Calendar. Calculate your income tax, social security and. You expect your connecticut income tax withheld (including any pe tax credit) to be less than your required annual payment for the 2025 taxable year.

The budget is said to include the largest income tax cut in connecticut history and includes approximately $500 million in tax relief to connecticut taxpayers, primarily by. Connecticut’s 2025 income tax ranges from 3% to 6.99%.