Estimate a Connecticut tax refund or bill from income and amounts already withheld.
Refund estimate = state tax already paid minus an approximate Connecticut tax at a reference 6.99% rate. Real returns subtract deductions and credits, so use this only as a rough planning figure.
Difference
Refund/Due = already paid − estimated tax
Approximate estimate for guidance only.
Credits, deductions and withholding changes alter the precise liability; this uses a single reference rate.
Rates are approximate state or national reference values. Local rates, exemptions and rules can differ, so treat the output as a planning figure only.