Connecticut State Tax Return

Connecticut's Official Website http://www.ct.gov/drs/site/default.asp
Refund Status Hotline1-800-382-9463 (In State)
1-860-297-5962 (From Anywhere)
General Information1-860-297-5962 (Hartford area or outside of CT)
1-800-382-9463 (Connecticut)
Connecticut

Connecticut Individual Income Tax Provisions

Connecticut taxes residents of the state individually based on a joint filing system, one of three methods states can use to assess income tax. A joint filing system adds together the incomes of both spouses and taxes the family as a single economic unit, similar to the way it's done for the federal government.

In Connecticut, same-sex couples are recognized in the same way as opposite-sex married couples, and their income is taxed the same way according to the state. However, these couples have to file an individual return for each person at the federal level.

The tax base starts with the taxpayer's federal AGI, which determines what the state tax will be. Even though the tax base is computed with the federal adjusted gross income, some major differences exist at the state level.

Exemptions

Some sources of income are exempt from inclusion in the state tax base. They are:

  • Interest from U.S. Government bonds
  • 50% of military retirement pay
  • Social Security benefits for those with incomes below $50,000 ($60,000 married, jointly/head of household)
  • Contributions and distributions from Connecticut Higher Education Trust fund
  • Interest accrued on state individual development accounts
  • Distributions from the state Home Care Option Program for the Elderly

Deductions

Connecticut state deductions differ very slightly from the federal law, as there are no major differences or itemization regulations to contend with. The only variance relates to the standard deduction, which is based on a sliding scale as follows:

Filing Status Deduction Amount Income Phase-out
Single $14,000 $28,000 - $56,000
Head of Household $19,000 $38,000 - $56,000
Married, Joint $24,000 $48,000 - $71,000
Married, Single $12,000 $24,000 - $35,000

2017 Connecticut Tax Rates

If taxable income more than - but not over - the tax is:
$0 $10,000 3% of the amount over $0
$10,000 $50,000 $300 plus 5% of the amount over $10,000
$50,000 $100,000 $2,300 plus 5.5% of the amount over $50,000
$100,000 $200,000 $5,050 plus 6% of the amount over $100,000
$200,000 $250,000 $11,050 plus 6.5% of the amount over $200,000
$250,000 - $14,300 plus 6.7% of the amount over $250,000
If taxable income more than - but not over - the tax is:
$0 $20,000 3% of the amount over $0
$20,000 $100,000 $600 plus 5% of the amount over $20,000
$100,000 $200,000 $4,600 plus 5.5% of the amount over $100,000
$200,000 $400,000 $10,100 plus 6% of the amount over $200,000
$400,000 $500,000 $22,100 plus 6.5% of the amount over $400,000
$500,000 - $28,600 plus 6.7% of the amount over $500,000
If taxable income more than - but not over - the tax is:
$0 $10,000 3% of the amount over $0
$10,000 $50,000 $300 plus 5% of the amount over $10,000
$50,000 $100,000 $2,300 plus 5.5% of the amount over $50,000
$100,000 $200,000 $5,050 plus 6% of the amount over $100,000
$200,000 $250,000 $11,050 plus 6.5% of the amount over $200,000
$250,000 - $14,300 plus 6.7% of the amount over $250,000
If taxable income more than - but not over - the tax is:
$0 $16,000 3% of the amount over $0
$16,000 $80,000 $480 plus 5% of the amount over $16,000
$80,000 $160,000 $3,680 plus 5.5% of the amount over $80,000
$160,000 $320,000 $8,080 plus 6% of the amount over $160,000
$320,000 $400,000 $17,680 plus 6.5% of the amount over $320,000
$400,000 - $22,880 plus 6.7% of the amount over $400,000

eTax.com works with the IRS and state revenue services to bring you the latest tax laws, forms & schedules.

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Connecticut Services Available
Preparation Preparation of a state tax return for Connecticut is available for $29.95.
E-File E-File is not available for Connecticut.
Direct Deposit Direct Deposit is not available for Connecticut.
Non-Resident Preparation Non-resident CT state return's are available upon request.
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Filing Deadline 4/15/2018
CT Counties CT Cities
FairfieldBethel, Botsford, Bridgeport, Brookfield, Cos Cob, Danbury, Darien, Easton, Fairfield, Georgetown, Greens Farms, Greenwich, Hawleyville, Monroe, New Canaan, New Fairfield, Newtown, Norwalk, Old Greenwich, Redding, Redding Center, Redding Ridge, Ridgefield, Riverside, Sandy Hook, Shelton, Sherman, Southport, Stamford, Stevenson, Stratford, Trumbull, Weston, Westport, Wilton
HartfordAvon, Berlin, Bloomfield, Bristol, Broad Brook, Burlington, Canton, Canton Center, Collinsville, East Berlin, East Glastonbury, East Granby, East Hartford, East Hartland, East Windsor, East Windsor Hill, Enfield, Farmington, Glastonbury, Granby, Hartford, Manchester, Marion, Marlborough, Melrose, Milldale, New Britain, Newington, North Canton, North Granby, Plainville, Plantsville, Poquonock, Rocky Hill, Simsbury, South Glastonbury, South Windsor, Southington, Suffield, Tariffville, Unionville, Weatogue, West Granby, West Hartford, West Hartland, West Simsbury, West Suffield, Wethersfield, Windsor, Windsor Locks
LitchfieldBantam, Barkhamsted, Bethlehem, Bridgewater, Canaan, Colebrook, Cornwall, Cornwall Bridge, East Canaan, Falls Village, Gaylordsville, Goshen, Harwinton, Kent, Lakeside, Lakeville, Litchfield, Morris, New Hartford, New Milford, New Preston Marble, Norfolk, Northfield, Oakville, Pequabuck, Pine Meadow, Plymouth, Riverton, Roxbury, Salisbury, Sharon, South Kent, Taconic, Terryville, Thomaston, Torrington, Washington, Washington Depot, Watertown, West Cornwall, Winchester Center, Winsted, Woodbury
MiddlesexCenterbrook, Chester, Clinton, Cobalt, Cromwell, Deep River, Durham, East Haddam, East Hampton, Essex, Haddam, Higganum, Ivoryton, Killingworth, Middle Haddam, Middlefield, Middletown, Moodus, Old Saybrook, Portland, Rockfall, Westbrook
New HavenAnsonia, Beacon Falls, Bethany, Branford, Cheshire, Derby, East Haven, Guilford, Hamden, Madison, Meriden, Middlebury, Milford, Naugatuck, New Haven, North Branford, North Haven, Northford, Orange, Oxford, Prospect, Seymour, South Britain, Southbury, Wallingford, Waterbury, West Haven, Wolcott, Woodbridge
New LondonBaltic, Bozrah, Colchester, East Lyme, Gales Ferry, Gilman, Glasgo, Groton, Hadlyme, Hanover, Jewett City, Lebanon, Ledyard, Montville, Mystic, New London, Niantic, North Franklin, North Stonington, North Westchester, Norwich, Oakdale, Old Lyme, Old Mystic, Pawcatuck, Preston, Quaker Hill, Salem, South Lyme, Stonington, Taftville, Uncasville, Versailles, Voluntown, Waterford, West Mystic, Yantic
TollandAmston, Andover, Bolton, Columbia, Coventry, Ellington, Hebron, Mansfield Center, Mansfield Depot, Somers, Somersville, South Willington, Stafford, Stafford Springs, Staffordville, Storrs Mansfield, Tolland, Vernon Rockville, Willington
WindhamAbington, Ashford, Ballouville, Brooklyn, Canterbury, Central Village, Chaplin, Danielson, Dayville, East Killingly, East Woodstock, Eastford, Fabyan, Grosvenor Dale, Hampton, Moosup, North Grosvenordal, North Windham, Oneco, Plainfield, Pomfret, Pomfret Center, Putnam, Quinebaug, Rogers, Scotland, South Windham, South Woodstock, Sterling, Thompson, Wauregan, Willimantic, Windham, Woodstock, Woodstock Valley