Income taxes: Connecticut has a progressive tax rate with seven income tax brackets. For 2019, the tax rates were as follows:

Tax rate	Single or married filing separately	Head of household	Married filing jointly or qualifying widow(er)
3%	$10,000 or less	$16,000 or less	$20,000 or less
5%	$10,001–$50,000	$16,001–$80,000	$20,001–$100,00
5.5%	$50,001–$100,000	$80,001–$160,000	$100,001–$200,000
6%	$100,001–$200,000	$160,001–$320,000	$200,001–$400,000
6.5%	$200,001–$250,000	$320,001–$400,000	$400,001–$500,000
6.9%	$250,001–$500,000	$400,001–$800,000	$500,001–$1 million
6.99%	$501,000 or more	$800,001 or more	More than $1 million

Cities Sending Most Revenue to Hartford

Income tax revenues brought in $7.2 billion to the state in 2018. Connecticut has collected a personal income tax since 1991.

	City/Town	Income Tax Revenue (2018)
1	Greenwich	$692,983,570
2	Stamford	$309,913,816
3	Fairfield	$220,964,250
4	Westport	$219,768,035
5	Darien	$210,653,056
6	West Hartford	$201,175,757
7	New Canaan	$176,528,186
8	Norwalk	$155,284,931
9	Wilton	$131,148,341
10	Glastonbury	$131,128,103

Useful Tax Benchmarking Data

https://www.courant.com/news/connecticut/hc-news-personal-income-tax-statistics-show-which-towns-pay-the-most-20200127-dp46mzktejakpgmmobwzisdpmm-htmlstory.html

https://wallethub.com/edu/best-worst-states-to-be-a-taxpayer/2416/#complete-rankings

https://patch.com/connecticut/across-ct/connecticut-property-taxes-every-town-who-pays-most