(The Center Square) – Illinoisans would see their taxes rise considerably next year if the federal 2017 Tax Cuts and Jobs Act isn’t extended, according to the nonpartisan National Taxpayers Union Foundation.
Congress has until the end of the year to approve a new federal tax reform package before taxes for individuals and businesses go up on New Year’s Day 2026.
Researcher Mattias Gugel said 80% of taxpayers in the U.S. will face a tax increase if the legislation expires.
“We’re going to see an automatic tax hike for Americans if the Trump tax cuts aren’t renewed by the end of this year,” Gugel told The Center Square. “For families in Illinois, if the tax cuts expire, the average Illinois taxpayer is going to owe almost $2,800 more next year.”
The group said if the legislation expires, the federal standard deduction would be cut in half, the federal child tax credit would be reduced, and the estate tax threshold would be lowered.
The Tax Cuts and Jobs Act is considered a significant update to individual and business taxes in the federal tax code. Illinois U.S. Rep. Darin LaHood, R-Peoria, said the legislation has been a boost for the economy.
“It is the most important and most impactful vote I have taken,” said LaHood. “It created the best economy of my lifetime. Higher wages, record employment, record number of investments in small and medium-sized businesses. It created a booming economy.”
The report notes that Illinois tax code entanglement with the federal tax code would cause a chain reaction of varying outcomes. Twenty-four states automatically update their state income tax laws to match any federal tax code changes to definitions, calculations, or rules.
“If Springfield doesn’t act either, it is going to mean higher taxes at the state level as well,” said Gugel.
Gugel points out that states could avoid this by “decoupling” from changes to federal itemized deductions that result from a lapse of TCJA and instead preserve current policy, or by relying exclusively on a standard deduction.
