Court applies 40% economic substance penalty to microcaptive insurance arrangement
Curtis K. Kadau v. Commissioner. United States Tax Court. No. 286-21.
The Tax Court found that a microcaptive insurance arrangement did not have economic substance and gave a 40% penalty because the taxpayers did not properly disclose the arrangement on their tax returns.
Holding
The Tax Court upheld economic substance penalties under §6662(b)(6) and applied the higher 40% rate under §6662(i) for 2012 to 2015, after deciding the microcaptive arrangement failed both parts of the economic substance test in §7701(o).
Why It Matters
This case is a clear example, after Patel, of how the economic substance doctrine applies to a microcaptive structure. The court used Patel as the main authority for applying the higher penalty under §6662(i).
The decision shows that not disclosing enough can raise a 20% penalty to 40%. Just deducting premiums on a tax return does not count as proper disclosure.
The Court continued its broader skepticism toward captive arrangements built around circular cash flows, inflated premiums, and owner-controlled claims administration.
The opinion reinforces that courts will examine whether purported insurance activity changes the taxpayer’s economic position in a real way, not merely whether formal policies exist on paper. Humans continue to discover that moving money between entities they control, while calling it “risk management,” tends to attract judicial scrutiny. Remarkable pattern recognition exercise by the species.
Key Facts
Curtis Kadau owned Surface Engineering & Alloy Co., Inc., an S corporation that participated in a microcaptive insurance arrangement.
Surface Engineering deducted payments made to captive-related entities as insurance expenses under §162. The captive arrangement involved:
Risk & Asset Protection Services, Ltd.
RMC Property & Casualty, Ltd.
Reinsurance agreements between related entities
Policies covering risks that taxpayers claimed were expensive or commercially unavailable.
Earlier, in Kadau I, the court decided that the payments were not deductible as insurance premiums because the arrangement did not qualify as insurance for federal tax purposes.
The only issue left was about penalties.
The IRS sought higher 40% penalties for 2012 to 2015 because the transactions lacked economic substance and were not disclosed. The deficiencies and penalties were:
2012: $135,858 deficiency and $54,343 penalty
2013: $31,371 deficiency and $12,236 penalty
2014: $89,100 deficiency and $35,640 penalty
2015: $180,633 deficiency and $72,253 penalty
The court waited to rule on the higher penalties until after it decided Patel v. Commissioner, a case about the economic substance doctrine under §7701(o).
Statutory or Regulatory Framework
Section §7701(o) codifies the economic substance doctrine.
A transaction has economic substance only if:
It meaningfully changes the taxpayer’s economic position apart from tax effects.
The taxpayer has a substantial non-tax business purpose for entering into the transaction.
Both requirements must be satisfied.
Section §6662(b)(6) imposes a 20% accuracy-related penalty for underpayments attributable to transactions lacking economic substance.
Section §6662(i) increases that penalty to 40% if the transaction is nondisclosed.
Arguments
Taxpayer argued:
The captive arrangement addressed legitimate operational and insurance needs.
Commercial insurance was expensive.
Additional risks were difficult or costly to insure commercially.
An actuarial feasibility study supported the premiums and coverages.
The arrangement gradually replaced commercial insurance coverage.
The structure, therefore, had economic substance and a substantial non-tax purpose.
Government argued:
The arrangement lacked meaningful economic consequences apart from tax deductions.
Premiums were unreasonable and not actuarially determined.
Funds moved in near-circular flows among related entities.
Claims administration lacked independence.
The arrangement functioned primarily as a tax and estate-planning vehicle.
The taxpayers failed to disclose the arrangement on their returns adequately.
Court’s Reasoning
The Court found no meaningful change in economic position because the arrangement largely recycled funds among related entities.
Risk & Asset received no claims during the first several years of the policy.
When claims were eventually filed, Mr. Kadau personally determined the validity of claims, approved payments, and bypassed independent adjusters.
The Court concluded the taxpayers would have been economically identical if they had placed the premium amounts into a bank account for future losses.
The Court rejected reliance on the actuarial study because it was prepared quickly, after minimal inquiry, and without meaningful company documentation.
Premiums were significantly higher than comparable commercial coverage, which the Court viewed as evidence that deductions, rather than risk management, drove the structure.
The captive’s investments included a $6 million life insurance policy designed to protect Mr. Kadau’s family and mortgages, which the Court viewed as evidence of estate-planning motives rather than insurance risk management.
The taxpayers failed to adequately disclose the arrangement because the returns did not identify relationships among the entities and did not include disclosure statements such as Form 8275.
Result
The Tax Court imposed 40% penalties under §6662(i) for 2012 through 2015 and sustained separate 20% accuracy-related penalties for 2016 and 2017.
The Takeaway
This opinion pushes the Tax Court further into an aggressive anti-microcaptive posture after Patel. The Court treated weak actuarial work, owner-controlled claims handling, circular fund flows, and estate-planning features as strong indicators that the arrangement existed primarily for tax benefits.
For practitioners, the issue of disclosure is nearly as important as the economic substance decision. The court made it clear that not specifically disclosing the structure can double the penalty from 20% to 40%. This highlights how costly paperwork mistakes can be.


