Residents of big East Coast cities like Philadelphia and New York love to complain about the cost of living in their respective towns, but their tax burden doesn't even come close to what residents of Bridgeport, Conn. have to pay.
A family of three living in Bridgeport with an annual income of $100,000 would pay 18.6 percent in major state and local taxes, based on annual data from 2005 compiled by the government of the District of Columbia.
In a separate report, the Tax Foundation estimates that 11 percent of the nation's income this year will go towards paying state and local taxes, its highest level since 1970, when the group first began tracking the figure.
Plenty of Americans bungle their return every year and pay extra in penalties as a result. Here's how you avoid making those same mistakes. (more) 
