Connecticut Income Tax Calculator
Calculate your 2026 Connecticut state income tax. See your bracket breakdown, effective rate, and how Connecticut compares to neighboring states.
Your Tax Inputs
Effective Rate vs Neighboring States
Connecticut Tax Brackets (2026)
Federal vs Connecticut Tax Comparison
Estimate for your income and filing status. Federal uses 2026 brackets and standard deduction.
| Item | Federal | Connecticut | Total |
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About Connecticut state taxes (Tax year 2026)
Connecticut uses a progressive income tax with 7 brackets ranging from 3% to 6.99%. Connecticut does not offer a standard deduction but provides a personal tax credit that phases out at higher incomes.
Groceries are exempt. Clothing under $100 is exempt. Prescription drugs are exempt.
Connecticut's top rate of 6.99% is well above the national average, making it one of the higher-tax states in the Northeast.
Filing in Connecticut: returns for tax year 2026 are administered by the Connecticut Department of Revenue Services and are generally filed in 2027 by the federal April deadline unless Connecticut declares a state-specific extension. Tax type on this return: Progressive. Top marginal rate: 6.99%. State sales-tax rate: 6.35%. For the most current contact info, see the Federation of Tax Administrators directory.
Connecticut — What is Connecticut's income tax rate? Connecticut has a progressive income tax with 7 brackets. Rates range from 3% on the first $10,000 to 6.99% on income over $500,000 for single filers.
Connecticut — Does Connecticut tax groceries? No, groceries are exempt from Connecticut's 6.35% sales tax. Clothing items under $100 are also exempt.
Connecticut — Does Connecticut have a standard deduction? No, Connecticut does not offer a standard deduction. Instead, it provides a personal tax credit that reduces your tax liability, but it phases out for higher-income taxpayers.
How this page is reviewed
| Risk tier | High YMYL |
|---|---|
| Author | Calculover Editorial Team Tax education |
| Editorial owner | Calculover Tax & Payroll Desk State-tax methodology owner |
| Reviewer | Calculover Editorial Review Government-source and limitation review |
| Last reviewed | 2026-05-14 |
| Last verified | 2026-05-14 |
| Data effective date | 2026-01-01 |
| Jurisdiction | Connecticut |
Methodology
State-tax per-state pages apply the published 2026 bracket schedule, standard deduction, and filing-status rules for the listed jurisdiction. Federal AGI inputs are mapped to state taxable income before bracket math runs. Local taxes (NYC, Philadelphia, certain Ohio cities) are flagged but not embedded in the base estimate.
Assumptions
- The user enters federal AGI, filing status, and state-specific adjustments as provided.
- Brackets, standard deductions, and credits reflect the 2026 statutory values published by the state Department of Revenue and the Tax Foundation.
- Local income taxes and reciprocity-agreement situations are noted but not auto-applied.
Limitations
- These pages do not predict mid-year legislative changes, rate adjustments, or new local tax assessments.
- Multi-state filers, convenience-of-employer rules, and special-circumstance credits require additional tax-professional analysis.
Sources
- State Tax Rates, Federation of Tax Administrators
- State Individual Income Tax Rates and Brackets, Tax Foundation
- State Government Resources, Internal Revenue Service
Professional guidance: This page is for state-tax education only and is not tax, legal, financial, or investment advice. State tax decisions and multi-state filing should be reviewed with a CPA or enrolled agent licensed in the relevant states.