Maine Enacts Millionaire Surcharge as Democratic States Pursue Wealth Taxes Amid Budget Pressure
Why It Matters
Maine has joined a growing list of Democratic-led states targeting high earners with new tax measures, as widening wealth inequality and federal spending cuts increase pressure on state budgets. The new Maine law adds a 2% surcharge on household income exceeding $1 million annually — a move supporters say addresses structural imbalances in state tax policy and opponents warn will discourage economic growth and residential investment.
What Happened
Democratic Gov. Janet Mills signed the millionaire surcharge into law this month, making Maine one of the latest states to enact a targeted income tax on top earners. State Rep. Cheryl Golek, a Democrat who backed the measure, argued that middle-class workers — including teachers, firefighters, and nurses — currently pay effective state income tax rates comparable to or higher than those paid by the state’s wealthiest residents.
“Those who benefit the most from our economy do so because of the people, infrastructure and communities that support that success,” Golek said in public remarks. “Asking for a small additional contribution from the wealthiest in our state is a reasonable and widely supported step toward a fairer system.”
Washington state enacted a similar measure last month, imposing a 9.9% tax on household income above $1 million per year. That law already faces a court challenge from opponents who argue that income constitutes property under the state constitution and must therefore be taxed uniformly.
By the Numbers
- 2% — additional income tax rate applied to Maine households earning more than $1 million annually
- 9.9% — rate on top incomes under Washington state’s newly enacted millionaire tax
- $6 billion — total transportation and education funding generated by Massachusetts’ 4% millionaire surtax since voters approved it in 2022
- $4.2 billion — adjusted gross income that departing Massachusetts residents took with them in 2023, the first year the tax was in effect
- 33,000+ — Massachusetts residents who relocated to other states last year, according to U.S. Census Bureau data, though the state’s overall population grew due to foreign immigration
Zoom Out
At least a dozen states — including Illinois, Minnesota, Rhode Island, and Virginia — have active proposals to raise taxes on high earners. In California, advocates announced they had gathered sufficient signatures for a ballot initiative imposing a one-time 5% levy on individuals with a net worth exceeding $1 billion, though Democratic Gov. Gavin Newsom has publicly opposed the measure. New York Mayor Zohran Mamdani and Gov. Kathy Hochul have proposed a separate tax on second homes valued above $5 million within New York City.
The push reflects a broader divergence in state fiscal policy. As liberal states pursue higher rates on top earners, many Republican-led states are moving in the opposite direction — cutting income taxes and competing aggressively for mobile residents and businesses. Indiana recently moved to suspend its gas tax on top of an existing sales tax break, illustrating the contrast in fiscal approaches across state lines.
Jared Walczak, a senior fellow at the Tax Foundation, warned that rising income taxes in high-cost states accelerate migration of both wealthy residents and employers. “You increasingly have two poles,” he said in public remarks, with more states adopting low income taxes while a smaller group doubles down on high rates for top earners.
Not all progressives are aligned on the strategy. Some Democratic governors, including Hochul, have cautioned that aggressive wealth taxes risk hollowing out a disproportionately important slice of their states’ tax bases. In Illinois, House Speaker Emanuel Welch dropped a millionaire tax push after Democrats fell short of the supermajority needed to place the measure on this fall’s ballot; the earliest it could now appear before voters is 2028.
Maine’s business community expressed similar reservations. Patrick Woodcock, president and CEO of the Maine State Chamber of Commerce, argued ahead of the House vote that the surcharge creates a disincentive for high earners to establish residency in a state already facing stagnant population growth. Maine lawmakers have navigated other contentious business-related debates in the current session, including a data privacy bill that stalled after opposition from the business community.
What’s Next
Maine’s new surcharge takes effect as written, though its long-term revenue impact will depend in part on whether high-earning residents alter residency or investment decisions in response. Washington state’s comparable law faces ongoing litigation that could set a legal precedent affecting similar measures elsewhere. In Michigan, a ballot campaign for a millionaire tax has been postponed to the 2028 election cycle after organizers encountered significant resistance. Illinois lawmakers are expected to revisit the issue in a future legislative session once the 2028 ballot window opens.