Colette Branch v. Commissioner of Internal Revenue: A $8.3 Million Dispute Over Unreported Income and Deductions

The $8.3 Million Stakes: A Medicaid Care Business Under IRS Scrutiny

The stakes could not have been higher when Colette Branch, owner of A-1 Absolute Best Care, LLC—a Medicaid-funded care business in New Orleans—faced an $8.3 million tax deficiency for tax years 2015 through 2017. The IRS, acting under Section 6020(b), prepared substitutes for returns (SFRs) after Branch failed to file, estimating over $6 million in annual gross receipts for her sole proprietorship. The agency disallowed most of her claimed deductions, arguing her expenses were unsubstantiated, while Branch countered that her legitimate business costs and charitable contributions should offset the income. The Tax Court’s final ruling, issued June 17, 2026, sided with the IRS on some fronts but granted Branch partial relief—determining her filing status as married filing separate, allowing certain Schedule A deductions, and acknowledging A-1 incurred deductible expenses beyond the IRS’s concessions. Yet the court also upheld additions to tax under Sections 6651(a)(1), 6651(a)(2), and 6654, leaving Branch liable for millions in penalties. The case underscores the Tax Court’s willingness to wield its authority over the IRS’s SFR determinations while scrutinizing taxpayer substantiation claims—a power play with $1.8 million in penalties hanging in the balance.

The Story: A Medicaid Care Business with Questionable Recordkeeping

A-1 Absolute Best Care, LLC (A-1), operating in New Orleans since 1998, provided housing, personal care, daycare, and community integration for roughly 100 adults with disabilities. Nearly all of its $6.5 million annual gross receipts came from Medicaid’s New Opportunities Waiver (NOW) program. The business operated under strict state licensing, with each client’s care governed by a state-approved Plan of Care.

Branch’s family played a central role in A-1’s operations. Her children, father, niece, and husband—who ran related businesses supplying meals to A-1—held key positions. Non-family staff, including live-in caretakers, also supported operations.

A-1’s financial practices were problematic. Branch frequently commingled personal and business funds, using A-1’s accounts for personal purchases and vice versa. The company maintained sparse records for client “holding accounts” and provided free housing for caretakers. Daycare activities included meals and social outings for clients, who received small cash allowances.

Branch’s tax compliance was severely lacking. She failed to file federal returns for 2015–2017, prompting the IRS to prepare substitutes for returns (SFRs) under Section 6020(b). These SFRs attributed over $6 million in annual gross receipts to A-1 but allowed minimal deductions. In 2020, the IRS issued a Notice of Deficiency, after which Branch submitted proposed returns years later—first as head of household, then as married filing jointly—none of which were processed. The proposed returns claimed far greater deductions than the SFRs, but the IRS rejected them. Branch’s records remained fragmented, with gaps in receipts for vehicle use and client-related spending.

The Dispute: IRS vs. Branch on Deductions and Filing Status

The IRS and Branch disputed two core issues: the legitimacy of her claimed deductions and her filing status. The IRS argued that Branch could not substantiate nearly $3.5 million in Schedule C expenses for A-1’s operations due to fragmented records. The IRS also challenged Branch’s shifting filing status—from head of household to married filing jointly—ultimately contending she should have filed as married filing separately.

The IRS took a hard line on deductions, invoking Section 6001, which requires taxpayers to maintain records sufficient to determine their correct tax liability. The agency argued that Branch’s failure to produce receipts for vehicle use, client-related spending, and other expenses meant she couldn’t meet the substantiation standards under Treas. Reg. § 1.6001-1(a). For Schedule A deductions, the IRS contested Branch’s $20,095 state and local tax write-off, questioning whether the payments were actually for state income taxes or unrelated business expenses. The agency also pushed back on her charitable contribution deductions, arguing that Louisiana’s community property laws limited her ability to claim them without her husband’s involvement.

Branch, meanwhile, maintained that her expenses were legitimate business costs under Section 162, which permits deductions for ordinary and necessary trade or business expenses. She pointed to bank statements and partial receipts as evidence, arguing that the Cohan Rule—which allows courts to estimate expenses when exact records are lacking—should apply. For her filing status, Branch initially claimed head of household, then later argued for married filing joint status, though her husband never signed the returns. She even invoked Louisiana’s community property laws, suggesting her income should be split 50/50 with her spouse, though the IRS countered that she hadn’t provided evidence to support such an allocation.

The dispute over penalties added another layer of contention. The IRS imposed Section 6651(a)(1) failure-to-file penalties and Section 6651(a)(2) failure-to-pay penalties, arguing Branch’s late filings and unpaid taxes warranted the additions. Branch countered that she had reasonable cause, claiming she relied on her tax advisor’s advice—a defense the IRS rejected, citing her failure to produce credible evidence of that reliance. The stage was set for the Tax Court to weigh the credibility of Branch’s records against the IRS’s strict interpretation of the tax code.

The Court's Analysis: Substantiation, Community Property, and the Cohan Rule

The Tax Court wielded its judicial authority to dissect Branch’s claims with surgical precision, rejecting her attempts to shift burdens and enforcing strict substantiation rules where required. The court’s reasoning hinged on three core legal doctrines: the burden of proof under § 7491(a), the community property framework in Louisiana, and the Cohan rule’s limited application to business expense deductions.

Burden of Proof: Branch’s Failure to Shift the IRS’s Burden

The court reiterated that deductions are a matter of legislative grace, placing the burden on Branch to prove her entitlement to claimed deductions. Under § 7491(a), the burden may shift to the IRS if the taxpayer produces credible evidence, but the court found Branch’s evidence—unsupported claims and vague testimony—lacking in credibility. The court emphasized that credible evidence must be sufficient to support a decision without contrary evidence, a standard Branch’s records did not meet. This ruling reinforced the Tax Court’s authority to reject insufficient evidence.

Filing Status: Married Filing Separate and the Rejection of Community Property Claims

The court applied § 6013(a), ruling Branch’s filing status was married filing separate since no joint return was filed. Branch’s belated attempt to argue for community property allocation under § 66 and Louisiana law was rejected as untimely and unsupported. The court found no evidence to justify a 50/50 income split, particularly given the lack of documentation for her husband’s earnings or a rational allocation method. This decision underscored the Tax Court’s discretion to disregard untimely or unsupported arguments.

Schedule A Deductions: State and Local Taxes, Charitable Contributions, and the IRS’s Concessions

The court allowed a $20,095 deduction for state and local taxes paid in 2015, based on two checks signed by Branch from her personal account before marriage. For charitable contributions, the court enforced the IRS’s pretrial concessions, allowing the stipulated deductions of $70,310 (2015), $76,484 (2016), and $67,956 (2017). However, Branch’s additional claimed donations—$97,900 (2015), $19,000 (2016), and $39,654 (2017)—were disallowed due to lack of substantiation under § 170(f)(8), as she failed to provide contemporaneous written acknowledgments for donations exceeding $250.

Schedule C Deductions: The Cohan Rule’s Application and Limitations

The court applied the Cohan rule to several categories of Branch’s claimed business expenses under § 162(a), but noted critical limitations: it cannot apply to expenses subject to strict substantiation requirements under § 274(d), such as travel, meals, entertainment, and listed property.

• Rent Expenses: The court allowed $2,630 for emergency housing rent in Houston but disallowed other rent payments due to insufficient evidence. It estimated $35,000 for utilities (70% of the claimed amount).
• Contractor Payments: The court allowed $35,000 (70%) of $49,931 in contractor checks and $256,000 (60%) of $466,800 in additional contractor expenses, but disallowed $8,843 in vehicle and travel expenses under § 274(d). Cash withdrawals were reduced to $9,000 based on petty cash receipts.
• Depreciation and Miscellaneous Expenses: Branch’s $103,199 depreciation deduction was entirely disallowed due to inconsistent and unsupported evidence. Miscellaneous expenses paid via her personal American Express card were reduced to $35,000 (30%), with the court emphasizing the Cohan rule requires a rational basis for estimation.

Additions to Tax: Penalties for Failure to File, Pay, and Underpayment of Estimated Tax

The court upheld § 6651(a)(1) failure-to-file penalties and § 6651(a)(2) failure-to-pay penalties, rejecting Branch’s reasonable cause defense. The court found that Branch’s reliance on her tax advisor’s advice did not constitute reasonable cause, citing Morris v. Commissioner. The court also upheld the § 6654 underpayment of estimated tax penalty, noting that Branch’s 2014 return was filed late and that SFRs are not considered returns for this purpose.

The Court’s Exercise of Judicial Power

Throughout its analysis, the Tax Court demonstrated its authority to reject unsupported claims, enforce statutory substantiation requirements, and apply legal doctrines with precision. By upholding the IRS’s concessions while simultaneously disallowing claims lacking evidence, the court balanced fairness with the strict requirements of the tax code. Its application of the Cohan rule—limited to expenses where a rational basis for estimation existed—showed judicial restraint, while its rejection of Branch’s community property arguments and penalty defenses underscored its role as the final authority on tax disputes. This decision serves as a cautionary tale for taxpayers: meticulous recordkeeping and timely compliance are non-negotiable in the eyes of the Tax Court.

The Impact: Lessons for Taxpayers and Medicaid-Funded Businesses

The Tax Court’s decision in Branch v. Commissioner delivers a clear warning to taxpayers—particularly those operating Medicaid-funded care businesses—that the court will not tolerate lax recordkeeping, strategic missteps in filing status, or reliance on legal loopholes to justify noncompliance. The ruling underscores that the Tax Court views its role as the final arbiter of tax disputes, enforcing both the letter and spirit of the tax code while rejecting arguments that lack substantive support. For businesses like A-1, which rely on Medicaid reimbursements and face heightened IRS scrutiny, this case serves as a blueprint for avoiding costly mistakes.

Recordkeeping remains the bedrock of tax compliance. The court’s partial allowance of deductions under the Cohan rule—despite Branch’s failure to maintain adequate records—should not be misinterpreted as an invitation to cut corners. Section 162(a) permits deductions for ordinary and necessary business expenses, but the Cohan rule, established in Cohan v. Commissioner, only applies where a taxpayer provides a rational basis for estimation. The Tax Court’s refusal to fully accept Branch’s claims highlights that while approximations may be permitted in limited circumstances, they are no substitute for contemporaneous documentation. Taxpayers must retain receipts, bank statements, and logs for all deductible expenses, especially cash transactions and payments made from personal accounts, which are particularly vulnerable to IRS challenge.

The case also exposes the dangers of untimely or improperly raised community property arguments. In states like Louisiana, where community property laws govern income allocation, taxpayers must carefully distinguish between separate and community assets. Section 66 of the Internal Revenue Code requires that income earned during marriage be split 50/50 for federal tax purposes, regardless of which spouse generated the income. Branch’s late attempt to argue for a different filing status failed because the court found no evidence supporting his position. Taxpayers in community property states should proactively allocate income and deductions, documenting the source of each to avoid disputes with the IRS or their spouse.

The Cohan rule’s limitations were another critical takeaway. While the court allowed a partial deduction for some expenses where a reasonable estimate could be made, it drew a firm line at Section 274(d) expenses—those requiring strict substantiation, such as travel, meals, and entertainment. Section 274(d) imposes exacting standards for deducting listed property and business-related expenses, and the Tax Court has repeatedly rejected attempts to circumvent these rules through estimation. Taxpayers cannot rely on the Cohan rule to excuse poor recordkeeping for expenses governed by Section 274(d); instead, they must maintain detailed, contemporaneous logs to survive an audit.

The court’s rejection of Branch’s penalty defenses further reinforces that reasonable cause arguments are narrowly construed. Branch claimed that his reliance on a tax advisor justified his late filing, but the Tax Court held that this did not constitute reasonable cause for failure-to-file penalties under Section 6651(a)(1). The IRS and courts have consistently ruled that penalties are not abated merely because a taxpayer sought professional advice; taxpayers must demonstrate that they exercised ordinary business care and prudence in meeting their filing obligations. This ruling serves as a reminder that while tax advisors can provide guidance, they do not absolve taxpayers of their legal responsibilities.

The IRS’s concessions in this case—such as its pretrial memoranda acknowledging certain deductions—also carry weight. The court enforced these concessions, signaling that taxpayers and practitioners should hold the IRS to its stated positions during litigation. This underscores the importance of carefully reviewing IRS positions in pre-trial documents and not assuming that concessions will be revisited without cause.

For Medicaid-funded businesses, the implications are particularly acute. The IRS has intensified its focus on such enterprises, which are often cash-intensive and operate in highly regulated environments where fraud risks are elevated. The court’s scrutiny of A-1’s recordkeeping—especially its failure to substantiate client-related expenses and commingling of personal and business funds—highlights the need for meticulous financial tracking. Businesses must maintain separate accounts for Medicaid reimbursements, document all client-related expenses, and ensure that payroll records align with Medicaid billing reports to avoid triggering an audit or, worse, allegations of fraud. The IRS’s collaboration with state Medicaid Fraud Control Units means that tax compliance is now inseparable from operational integrity in this sector.

Ultimately, Branch v. Commissioner is a cautionary tale for taxpayers who operate in complex regulatory environments or rely on estimation where precise records are required. The Tax Court’s decision reaffirms that while it may exercise judicial restraint in applying flexible doctrines like the Cohan rule, it will not hesitate to enforce strict substantiation requirements or reject arguments that lack merit. For Medicaid-funded businesses and similar enterprises, the message is unambiguous: meticulous recordkeeping, timely compliance, and proactive tax planning are not optional—they are the price of avoiding liability.