Connecticut and Massachusetts at a glance
Connecticut and Massachusetts share a border, but a paycheck does not travel across it unchanged. A $60,000 salary leaves $19,047 a year after taxes and the four basics in Connecticut and $13,569 in Massachusetts.
Connecticut comes out ahead by $5,478 a year ($456 a month). The calculation starts from the same gross pay in both states, subtracts federal tax, Social Security and Medicare, then each state's own income tax, and then the population-weighted cost of a one-bedroom rental, groceries, home energy and gasoline across 3,624,508 people in 9 counties in Connecticut and 7,044,056 people in 14 counties in Massachusetts.
Taxes: what each paycheck loses
Federal income tax ($5,072) and FICA ($4,590) on $60,000 are the same on both sides of the border. State income tax takes $2,550 in Connecticut and $2,780 in Massachusetts, which leaves take-home pay of $47,789 and $47,559.
At $100,000
At $100,000 take-home pay is $74,151 in Connecticut and $74,121 in Massachusetts, a difference of $30. The gap does not widen much with income because the two states tax at similar rates.
Living costs
One-bedroom rent averages $1,670 a month in Connecticut and $2,087 in Massachusetts, so Connecticut is $417 a month cheaper for housing. Food costs $3,436 a year in both, because the USDA Thrifty Food Plan is a national figure; home energy $3,704 and $3,968, and gasoline $1,559 and $1,542. Together the basics cost $28,742 a year in Connecticut and $33,989 in Massachusetts.
What the Census adds
Median household income is $95,781 in Connecticut and $103,960 in Massachusetts. Homeowners pay a median of $6,643 a year in property tax in Connecticut and $5,992 in Massachusetts. Commuters travel 26.5 minutes each way on average in Connecticut and 29.1 in Massachusetts.
Method
Taxes use the 2025 rules for a single filer with wage income only and the standard deduction. Housing and living costs are county figures from HUD (one-bedroom Fair Market Rent), the USDA Thrifty Food Plan and state energy prices from the Energy Information Administration, averaged across each state's counties and weighted by population, so large counties count more. Local income taxes are not included. Counties differ widely inside every state, so use the county pages for a specific place.