Treasury building in Washington.
Four Democratic-led northeastern states sued the Trump administration to invalidate the new $10,000 cap on the federal tax deduction for state and local taxes that they say unfairly targets them.
New York, New Jersey, Connecticut and Maryland claim the sweeping 2017 federal tax law overturned more than 150 years of precedent. The state and local tax deduction is essential to prevent federal tax powers from interfering with constitutionally guaranteed state rights, according to the lawsuit.
The tax law resulted from a "hyper-partisan and rushed process" that will disproportionately harm taxpayers in the four states, New York Attorney General Barbara Underwood said in a statement. Underwood said a state analysis found that the cap will increase New Yorkers' federal taxes by $14.3 billion in 2018 alone and another $121 billion between 2019 and 2025.
According to the complaint, filed Tuesday in Manhattan federal court, the new cap on the so-called SALT deduction will make it more difficult for the four states to maintain their taxation and fiscal policies, thus "hobbling their sovereign authority to make policy decisions without federal interference."
'High Stakes'
The Treasury Department said it's reviewing the complaint. The Internal Revenue Service, which is also named in the suit, declined to comment.
Tom Corrie, a New York lawyer who directs the state and local tax group at the accounting firm Friedman LLP, said the "stakes are very high" for the states because the cap is already harming their real-estate markets and making the states less attractive for high-income workers.
"I anticipate there will be other states joining the suit and that will increase the likelihood of success," said Corrie, who isn't involved in the lawsuit. "Both the federal government and the states will enter this judicial battle 'fully loaded' and prepared for an extended conflict."
