State of Connecticut

Personal Income Tax Rates
Last Ten Calendar Years
(Expressed in Thousands)
 
Top Income Tax Rate is Applied to Taxable Income in Excess of the following brackets
Year Median
 Rate
Single/
Married Filing
Separate
Married
Filing
Jointly
Head of
Household
Average
Effective
Rate
2002 (1) 4.50% $10,000 $20,000 $16,000 2.50%
2003 (1) 4.50% $10,000 $20,000 $16,000 2.48%
2004 (1) 5.00% $10,000 $20,000 $16,000 2.97%
2005 (1) 5.00% $10,000 $20,000 $16,000 3.17%
2006 (1) 5.00% $10,000 $20,000 $16,000 3.34%
2007 (1) 5.00% $10,000 $20,000 $16,000 3.46%
2008 (1) 5.00% $10,000 $20,000 $16,000 3.45%
2009 (1) 5.00% $10,000 $20,000 $16,000 2.70%
2010 (1) 5.00% $10,000 $20,000 $16,000 2.83%
 
Income Tax Rate is Applied to Taxable Income by income range for the same brackets
2011 (2) 5.00% $10,000-$50,000 $20,000-$100,000 $16,000-$80,000 3.20%
2011 (2) 5.50% $50,000-$100,000 $100,000-$200,000 $80,000-$160,000 3.20%
2011 (2) 6.00% $100,000-$200,000 $200,000-$400,000 $160,000-$320,000 3.20%
2011 (2) 6.50% $200,000-$250,000 $400,000-$500,000 $320,000-$400,000 3.20%
2011 (2) 6.70% greater than $250,000 greater than $500,000 greater than $400,000 3.20%

Notes:
[1] Taxable income equal to or less than amounts listed this year is taxed at a rate of 3%. In addition there is a tax on millionaires of 6.5%. The average effective rate equals fiscal year net tax collections divided by prior-year total personal income based on statistics provided by the U. S. Bureau of Economic Analysis.
[2] Taxable income equal to or less than amounts listed this year is taxed at a rate of 3% except as follows. The amount to which the 3% rate applies is reduced by $1,000 for each $5,000, or fraction thereof, by which AGI exceeds $56,500 for singles and by $1,000 for each $2,500 for filing separately, by $1,600 for each $4,000 for head of household and by $2,000 for each $5,000 or fraction thereof, by which AGI exceeds $56,500, $50,250 $78,500 and $100,500 for single, filing separately, head of house hold and filing jointly
Source: Department of Revenue Services -Annual Report.