Understanding Personal Income Tax in Connecticut

Connecticut personal income taxes are discussed.

In Connecticut, a personal income tax is imposed on the Connecticut taxable income of each individual. Therefore, if you are operating your business as an S corporation, partnership, limited liability company, or a sole proprietorship, you will be subject to a personal income tax on your business income that passes through to you.

The following are the rates for Connecticut.

Marginal Tax Rates for 2012
Single or Married Filing Separately
Taxable Income Tax Due
$0 to 10,000 3.0%
$10,001 to $50,000 $300.00, plus 5.0% of the excess over $10,000
$50,001 to $100,000 $2,300, plus 5.5% of the excess over $50,000
$100,001 to $200,000 $5,050, plus 6.0% of the excess over $100,000
$200,001 to 250,000 $11,050, plus 6.5% of the excess over $200,000
$250,001 and over $14,300, plus 6.70% of the excess over $250,000
Filing Jointly or Qualifying Widow(er)
Taxable Income Tax Due
$0 to $20,000 3.0%
$20,001 to $100,000 $600.00, plus 5.0% of the excess over $20,000
$100,001 to $200,000 $4,600, plus 5.5% of the excess over $100,000
$200,001 to $400,000 $10,100, plus 6.0% of the excess over $200,000
$400,001 to $500,000 $22,100, plus 6.5% of the excess over $400,000
$500,001 and over $28,600, plus 6.70% of the excess over $500,000
Head of Household
Taxable Income Tax Due
$0 to $16,000 3%
$16,001 to $80,000 $480.00, plus 5.0% of the excess over $16,000
$80,001 to $160,000 $3,680, plus 5.5% of the excess over $80,000
$160,001 to $320,000 $8,080, plus 6.0% of the excess over $160,000
$320,001 to $400,000 $17,680, plus 6.5% of the excess over $320,000
$400,001 and over $22,880, plus 6.70% of the excess over $400,000

For tax years beginning on or after January 1, 2011, the 3% rate is phased out for higher-income individuals.


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