What is Connecticut state income tax?
Connecticut has graduated rates from 2% to 6.99% in 2026 — for single filers, 2% on the first $10,000 of taxable income and 4.5% up to $50,000, rising to 6.99% above $500,000. The calculator applies these brackets with the personal exemption ($15,000 single, phased out at higher incomes) and recapture. Rates: Connecticut DRS.