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Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →An unnamed Michigan company is challenging a $6.1 million IRS underpayment assessment in U.S. Tax Court, according to a report published by Law360 Tax Authority on October 9, 2026. The company alleges that the IRS improperly increased its ordinary business income and denied credits for increasing research activities. Those are the company’s claims, not findings by the court.
What is the company disputing?
As summarized by Law360 Tax Authority, the company’s petition contests two IRS actions: an increase to the company’s ordinary business income and the denial of credits for increasing research activities. The report’s headline puts the disputed assessment at $6.1 million.
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The available report summary does not explain why the IRS made those adjustments or detail the company’s arguments for overturning them. It also does not identify the tax years or describe the evidence supporting the research-credit claim.
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What does the $6.1 million assessment include?
The $6.1 million figure comes from the report’s headline. The accessible summary does not itemize the amount, so it is not possible to say how much represents tax, interest, penalties, or any other component. It also does not establish which tax periods the assessment covers.
Who is the Michigan company?
The accessible summary does not name the company. “Mich. Co.” in the headline is not enough to identify it, and the available information does not support guessing its identity.
Has the Tax Court ruled?
No ruling or case outcome is established in the available report summary. It describes the company asking the court to rule in its favor; filing a petition and requesting relief do not mean the court has granted it.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is this about Michigan estimated-tax payments?
The reported dispute concerns a company’s federal tax assessment and its challenge to IRS adjustments. It should not be confused with Michigan’s estimated income-tax payment rules for individuals.
Michigan Department of Treasury guidance says taxpayers generally must make estimated income-tax payments when expected liability is at least $500 after credits and withholding. It describes payment safe harbors of 90% of current-year tax, 100% of prior-year tax, or 110% of prior-year tax for taxpayers above the stated prior-year income threshold. Those are general state rules; the available case reporting does not establish that they apply to this company’s federal dispute. See the department’s estimated income-tax guidance and estimated-tax FAQs.
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