Maine legislators are poised to crack down on corporations that use foreign tax havens to hide income from state tax authorities. The legislation, which has now been passed by both the House and Senate but still faces further votes, requires multinationals doing business in Maine to declare income otherwise attributed to more than thirty countries known to be popular tax havens (like the Cayman Islands and Bermuda, not to mention the Bailiwick of Guernsey, which turns out to be an island off the coast of France). Analysts estimate that such a change would increase state revenue by $10 million over the next two years. And U.S. PIRG, among other public interest organizations, has been beating the drum for this sensible reform, which we discussed in our recent report: 90 Reasons We Need State Corporate Tax Reform. Oregon and Montana already have similar laws on their books.

Thanks to a refundable tax credit included in New York’s budget this year, theater companies who launch their productions in upstate New York will enjoy having taxpayers foot the bill for 25 percent of the cost of “their so-called tech periods, the weeks long process in which a production gathers the costumes, tests the sets and choreography and establishes the lighting and musical cues.” Despite the credit’s extreme generosity, we’re still not sure it would have been enough to save Spider-Man.

Tax swap proposals that would trade income rate reductions for sales tax increases have been all the rage in conservative states in recent years. But what if your state doesn’t even have an income tax to begin with? Not wanting to be left out of the tax swap craze, Republican candidate for Texas Comptroller Glenn Hegar has a solution: completely replace property taxes with an increased sales tax. Texas already has a horribly regressive state tax system (PDF), but eliminating the property tax — which is at least close to proportional in its distribution across income groups — would only make matters worse. And while it is “easy to hate” the property tax, without it Texas would need to drastically cut services or more than double the sales tax. Such a trade could also mean less autonomy for localities (PDF) and a revamped school financing system.

Grover Norquist and the Koch brothers’ Americans for Prosperity are continuing to push for eliminating income taxes on investors in Tennessee, and there’s a chance they may succeed.  The state’s tax-writing committees will be voting this week on whether or not to gradually repeal Tennessee’s “Hall Tax” on dividends, interest, and some capital gains.  But repeal would be steeply regressive, as our partners at the Institute on Taxation and Economic Policy (ITEP) showed in a report cited by The Tennessean.  And on top of that, a spokesman for Governor Bill Haslam explains that “we’re in the middle of dealing with difficult budget realities … and this legislation would automatically put the issue above other priorities when revenues come back.”