Connecticut State Income Tax Data Sheet


© 2019

Tax Bracket (Single) [2] Tax Bracket (Couple) [3] Marginal Tax Rate
$0+ $0+ 3.00%
$10,000+ $20,000+ 5.00%
$50,000+ $100,000+ 5.50%
$100,000+ $200,000+ 6.00%
$200,000+ $400,000+ 6.50%
$250,000+ $500,000+ 6.90%
$500,000+ $1,000,000+ 6.99%

Connecticut's personal exemption incorporates a standard deduction, and is phased out for households earning over $71,000. An additional state tax credit, ranging from 75% to 0% of taxable income, is available based on your adjusted gross income.

Connecticut State Income Tax Deductions

Income tax deductions are expenses that can be deducted from your gross pre-tax income before determining your taxable income.

Connecticut Standard Deduction

Unlike many other states, Connecticut has no standard deduction. Certain itemized deductions (including property tax, qualified charitable contributions, etc) may be allowed depending on the income level and filing type of the taxpayer. Keep in mind that not all deductions allowed on your federal income tax return are necessarily going to be allowed on your Connecticut income tax return.

Connecticut Personal Exemptions

Connecticut's personal income tax exemptions include a personal exemption of $14,000.00. You can deduct one single exemption from your gross income if you are responsible for supporting yourself financially.

Connecticut Dependent Deduction

Unlike most states, Connecticut does not have a dependent deduction. You can, however, claim dependent deductions on your Federal Tax Return.

Connecticut Itemized Deductions

Unlike the Federal income tax, the Connecticut income tax does not allow itemized deductions. You may claim the Connecticut standard deduction if applicable, and specific deductions may be available to Connecticut taxpayers as limited deductions or tax credits.

Connecticut State Income Tax Data Sheet


© 2019

Web Resources:

Department of Revenue Services Website:

Connecticut Tax Forms:|#42836

Connecticut Income Tax Information:

Connecticut Tax Refund Portal:

Important Tax Addresses:

Income Tax Returns (Payment Included)
Department of Revenue Services State of Connecticut
PO BOX 2977
Hartford, CT 06104-2977

Income Tax Returns (No Payment Included)
Department of Revenue Services
State of Connecticut
PO BOX 2976
Hartford, CT 06104-2976;

Department of Revenue Services
Taxpayer Services Division
25 Sigourney Street, Ste. 2
Hartford, CT 06106