An Act preventing high-income tax avoidance

This bill requires married couples in Massachusetts to file a joint state income tax return if they file a joint federal return. The law applies to all tax years beginning after December 31, 2022, and directly affects married taxpayers who currently file separately at the state level. By mandating joint filing for those who file jointly federally, the legislation aims to prevent high-income individuals from using separate state filings to reduce their tax liability.