I owned a business in Kittery, Maine. I lived in York, Maine. So, I know this first hand. When I left the sales tax was 6.5%.
I also think it is a shame that if someone works at the Portsmouth Navy Yard and lives in New Hampshire the state of Maine taxes their income. Also, if the person has a spouse, their income is figured into the mix. Oh and here is another kick in the pants; If you retire from the Portsmouth Navy yard (and live in New Hampshire) and decided to move to say Florida. If you do this within a year from your retirement, the State of Maine will tax you on the capital gains you made from the sale of your house you sold in New Hampshire, as income!! I kid you, not!!
No taxation without Representation--right?