Some Illinois counties will save more from ‘Big Beautiful Bill’ tax cuts than others. See the map

The average Illinois taxpayer is expected to benefit from tax cuts included in President Donald Trump’s "Big Beautiful Bill" starting in 2026, according to an analysis by the Tax Foundation.

Using conventional revenue estimates at the national level, the foundation published the average tax cuts various counties can expect to benefit from next year.

Wondering how much your county may save? Here’s what we know.

What is the ‘Big Beautiful Bill’?

The legislation, signed into law in July, will enact the most significant legislative changes to federal tax policy since the 2017 Tax Cuts and Jobs Act, according to the Tax Foundation. This includes making permanent tax cuts introduced in the 2017 act.

Trump’s new tax policy includes deductions for tipped and overtime income, an expanded child tax credit and tax relief for seniors, among other changes.

However, the legislation has garnered criticism for its steep cuts to social programs like food assistance and Medicaid, which could lead to as many as 11.8 million people losing health insurance over the next decade, according to USA TODAY.

Big Beautiful Bill 101: What you need to know about House and Senate versions.

Which states will receive largest tax cuts from ‘Big Beautiful Bill’?

The Tax Foundation says the legislation will reduce federal taxes on average for individual taxpayers in every state, with a nationwide average tax cut of $3,752 per taxpayer in 2026. 

The foundation found that filers in Wyoming ($5,375), Washington ($5,372), and Massachusetts ($5,139) will see the largest average tax cuts in 2026, while taxpayers in West Virginia ($2,503) and Mississippi ($2,401) will see the smallest cuts.

At the county level, the foundation says mountain resort towns are likely to benefit the most, with Teton County in Wyoming seeing the highest average tax cut of $37,373 per filer. Meanwhile, the smallest average tax cuts will be found in rural counties, such as Loup County, Nevada, with an average cut of $824 in 2026.

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How much will Illinois taxpayers benefit from ‘Big Beautiful Bill’ tax cuts?

Lake County residents are expected to benefit the most from the legislation’s tax cuts, with an average cut of $5,571 per taxpayer in 2026. DuPage County ($4,862), Cook County ($4,140) and Monroe County ($4,051) are close contenders.

Meanwhile, the southernmost Illinois county of Alexander is expected to benefit the least, with an average tax cut of $2,016.

Other southern counties like Pope County ($2,137), Hardin County ($2,196) and Union County ($2,205) will receive similar cuts.

Illinois tax cuts by year

Illinois filers will see the following average tax cuts over the next decade:

• 2026: $3,720
• 2027: $3,500
• 2028: $3,451
• 2029: $2,883
• 2030: $2,636
• 2031: $2,748
• 2032: $2,843
• 2033: $3,102
• 2034: $3,262
• 2035: $3,431

‘Big Beautiful Bill’ tax cuts by county map

The map below shows average tax cuts per filer for each county within the U.S. (only including income tax rate cuts and bracket changes).

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Jim Sergent and Janet Loehrke contributed to this article.