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Case Citation: Micro-Haem Scientifics & Medical Supplies Ltd v Uganda Revenue Authority, TAT Application No. 90 of 2025, ruling delivered on 29 May 2026.
Related Authority: Moil Uganda Ltd v Uganda Revenue Authority, High Court Civil Appeal No. 0072 of 2024 / [2026] UGCommC 124.
Tax Heads: Income Tax / Interest Deductibility / Corporate Financing / Tax Controversy
Key Commentary Takeaways
- Persistent Tax Risk: Uganda’s interest-limitation rule under section 25(3) of the Income Tax Act remains a material tax-risk provision for companies operating within commonly owned corporate structures.
- Limitation on Group Theory: Micro-Haem confirms that corporate group status alone cannot justify applying the section 25(3) cap where the disputed borrowing is genuine third-party debt sourced from outside the group.
- A Narrow Taxpayer Victory: The taxpayer’s success was carefully confined: the assessment was set aside on the third-party debt point, while group ownership, dormancy and exemption remained live issues requiring strict evidentiary proof.
- Commercial Takeaway: For corporate financing, the origin, structure and evidentiary support for debt now matter as much as the company’s ownership map.
Executive Summary & Questions of Law
Uganda’s Tax Appeals Tribunal has recently handed down a key decision on interest expense cap rules under the Income Tax Act, which reinforces the practical shift introduced by the High Court in Moil Uganda Ltd v Uganda Revenue Authority: belonging to a corporate group does not, by itself, trigger the section 25(3) interest expense cap where the financing involves genuine third-party debt from outside the group structure
The dispute brought four central questions of law before the Tribunal:
- Group Status: Did the taxpayer fall within the statutory definition of a “group” under sections 25(5) and 2 of the Income Tax Act?
- Dormancy: Was the taxpayer exempt from the interest limitation on the ground that its alleged group affiliates were dormant?
- Third-Party Debt: Did the interest restriction in section 25(3) extend to borrowings obtained from independent third-party lenders?
- Exemption: Was the taxpayer protected by an asserted income-tax exemption as a manufacturer of medical supplies?
The Tribunal’s determination is commercially important, but its reach is narrow. The assessment could not stand because, to the extent relevant to the assessment, the impugned borrowings were obtained from independent third-party lenders outside the group structure. Group status and dormancy arguments being the peripheral points.
Key Holdings & Legal Principles
Group Status: Common Ownership Remain Relevant
The Tribunal held that Micro-Haem was a member of a group under section 25(5). This finding is important because it prevents the decision from being read as a general rejection of URA’s group-based approach to section 25(3).
The Tribunal rejected the view that group status requires identical shareholding structures or complete uniformity across entities. The relevant inquiry was the existence of common underlying ownership.
On the facts, the Tribunal considered the overlap in shareholding, directorships and control sufficient to establish common underlying ownership. The group-status framework therefore remained intact.
Dormancy
The Tribunal accepted the broader proposition that corporate dormancy and lack of economic substance may, in appropriate cases, affect the application of section 25(3). It nevertheless emphasised that dormancy is an evidence-sensitive question.
Micro-Haem contended that its related entities were inactive and had not engaged in meaningful commercial operations. URA resisted that position and relied, among other things, on the involvement of Caroga Micro Haem Ltd as both a signatory and guarantor to the taxpayer’s loan facility with SFC Finance Limited.
The Tribunal treated that transactional participation as evidence of an operational and economic nexus beyond mere paper incorporation. It therefore found that Micro-Haem had not proved that the related entities were wholly dormant or devoid of economic substance.
The case does not imply that dormant entities are automatically disregarded for section 25 purposes. Dormancy must be proved, and related-entity involvement in financing arrangements may materially affect the outcome.
Exemption: Strict Proof Still Required
Micro-Haem also argued that, as a manufacturer of medical appliances and diagnostic supplies, it was protected by an income-tax exemption. The Tribunal rejected this argument, noting that the exemption certificate referred to by the taxpayer was not attached to the record.
In doing so, the Tribunal reaffirmed a familiar tax principle: a taxpayer claiming an exemption bears the burden of strictly proving its existence and validity. The Tribunal also clarified that even where a valid exemption exists, it does not automatically excuse a taxpayer from complying with the ordinary machinery of the Income Tax Act, including computation, filing, assessment and verification requirements.
The exemption holding is an important caution. Sector importance, policy alignment or assumed eligibility cannot substitute for strict documentary proof.
Third-Party Debt
The decisive issue was whether section 25(3) applied to debt sourced from independent third-party lenders.
On this question, the Tribunal followed the High Court’s decision in Moil Uganda Ltd v URA. In Moil, the High Court moved away from a purely literal interpretation of section 25(3) and adopted a purposive approach, looking to the mischief the provision was intended to address.
Applying Moil, the Tribunal held that section 25(3) was not intended to apply to companies borrowing from independent sources outside the statutory “group” defined in section 25(5). Because Micro-Haem’s disputed loans were obtained from external independent third-party lenders, the Tribunal held that the interest-cap restriction was inapplicable to those transactions, to the extent relevant to the assessment.
The Business Financing Framework After Moil and Micro-Haem
To contextualise Micro-Haem, section 25(3) must be understood within Uganda’s broader tax architecture for corporate financing. The provision restricts deductible interest for group-affiliated taxpayers, while expressly excluding regulated financial institutions, microfinance institutions and insurance companies.
URA has, in practice, used the rule to challenge interest deductions where overlapping ownership or control links exist between entities. Before Moil, disputes often focused heavily on whether a company fell within the statutory definition of a “group.” Micro-Haem confirms that establishing group status is no longer the end of the analysis; the origin and character of the debt now carry significant weight.
Commercially, this means that even where a taxpayer is part of a corporate group, a borrowing arrangement with a genuinely independent third-party lender requires the section 25(3) analysis to address the purpose of the rule, not merely the ownership map.
The Ratio: Group Status Not Final
A taxpayer may belong to a group for purposes of section 25, but section 25(3) does not automatically cap all interest expenses merely because group status has been established. Following Moil, the Tribunal must evaluate whether the financing arrangement falls within the mischief targeted by the interest-limitation rule.
Where the debt is genuinely sourced from an independent third-party lender outside the group, group status alone is insufficient to sustain the deduction cap established by the provision.
Put differently, after Moil and Micro-Haem, the section 25(3) inquiry must look beyond ownership and consider the source and character of the borrowing.
What Micro-Haem Does Not Decide
The outcome of Micro-Haem must be read with precision. The Tribunal set aside URA’s specific assessment not because group taxpayers are generally outside section 25(3), but because the disputed debt was obtained from independent lenders outside the group structure, making the interest cap inapplicable to those specific transactions to the extent relevant to the assessment.
The decision operates on two levels:
- At the level of group status: the Tribunal accepted URA’s position that common underlying ownership remained a relevant legal measure and that Micro-Haem was part of a group.
- At the level of financing character: the Tribunal held that group status alone could not sustain the interest cap where the debt was sourced externally.
Taxpayers would be mistaken to cite Micro-Haem as a general answer to all interest-cap assessments. The correct reading is that such assessments must be evaluated against both ownership structures and the actual source of funding.
Specifically, the ruling:
- does not exempt group taxpayers from the interest cap, as Micro-Haem itself was treated as a group member;
- does not make common ownership irrelevant, since common underlying ownership remains central to the statutory group inquiry;
- does not mean dormant entities are automatically disregarded, because dormancy requires proof and any financing participation by related entities can undermine an inactivity argument;
- does not ease the burden of proving tax exemptions, which remain evidence-heavy and strictly construed; and
- does not protect related-party debt, circular funding arrangements, disguised intra-group financing, or third-party facilities that rely on group support in a way that changes the character of the loan.
The protection offered by the ruling is strongest where the debt is clearly and demonstrably owed to an independent third-party lender outside the group structure.
Crucial Tax & Commercial Implications
Financing Evidence Now Matters
The immediate practical effect of Micro-Haem is that section 25(3) disputes are likely to become more evidence-driven. Corporate ownership maps remain relevant, but they are no longer the exclusive battleground.
Future disputes are likely to examine:
- the identity and independence of the lender, both legally and commercially;
- whether the funds were advanced from outside the group structure;
- how the funds were used; and
- whether any related entity provided guarantees, security, signatory support, comfort letters or other secondary support.
The ruling highlights the importance of a financing record that can evidence facility terms, loan agreements, repayment schedules, board approvals, bank statements, security instruments and use of funds where third-party debt is relied upon.
Group Mapping Remains Necessary
The decision does not diminish the importance of group mapping. If anything, it sharpens it.
Taxpayers still need to understand their corporate ownership, directorship links, control relationships and common underlying ownership positions. The fact that third-party debt may ultimately fall outside the mischief of section 25(3) does not eliminate the threshold need to address group status.
The commercial discipline is therefore twofold: the ownership map must be clear, and the financing trail must be independently evidenced.
Dormancy Must Be Proved
Where corporate dormancy is asserted, simple incorporation histories or general statements of inactivity may not be enough.
The evidentiary threshold is likely to call for tax filings, financial statements, bank records, regulatory filings, employment records and asset records showing non-participation in the contested transaction.
The related-entity guarantee in Micro-Haem is particularly important. Security, signatory roles or comfort arrangements provided by affiliates may complicate third-party debt arguments and weaken assertions of dormancy.
Exemption Claims Remain Evidence-Heavy
Taxpayers claiming statutory exemptions cannot rely on broad economic policy alignment, industry importance or perceived eligibility. The exemption instrument itself must be proved.
The Tribunal’s reasoning also underscores that an exemption does not bypass the ordinary administrative compliance requirements of the Income Tax Act.
Current-Law Note
This case-note reflects the legal framework and issues as applied in the Micro-Haem ruling of May 2026.
Readers should note that the 2026 Income Tax amendment process proposed changes to section 25(5), including a formal definition of “dormant”, a 51% common-underlying-ownership threshold, and an exclusion for dormant group members. The post-amendment framework should be reviewed separately when applying these principles to current or subsequent transactions.
Conclusion & Commercial Documentation Lessons
The central lesson of Micro-Haem is that Uganda’s interest-cap rules cannot be applied solely through the lens of equity ownership where the underlying borrowing is genuine third-party debt sourced from outside the group structure.
For boards, corporate finance teams and tax managers, the ruling underscores the importance of maintaining coherent records across five key areas:
| File Category | Documentation Focus |
|---|---|
| Financing File Discipline | Evidence of the lender’s legal and commercial independence; source and use of funds; repayment records; and indications that the financing is not disguised intra-group funding. |
| Group Structure Review | Updated ownership maps and underlying-ownership records to address the threshold statutory group inquiry. |
| Related-Entity Support Review | Identification of affiliate guarantees, security, signatory roles or comfort support, recognising that such support may complicate both dormancy and third-party debt analysis. |
| Dormancy Evidence | Tax filings, financial statements, bank records, asset records and other evidence of non-participation in the relevant transaction. |
| Exemption File | Current and accessible exemption instruments matched to the statutory conditions relied upon, rather than reliance on general sector status or assumed eligibility. |
Ultimately, the message for corporate taxpayers operating in Uganda after Moil and Micro-Haem is essentially that the source, structure and evidentiary proof of borrowing now matter as much as the ownership map.
This publication is intended for general informational purposes only and does not constitute formal legal or tax advice. Seek counsel tailored to peculiar facts and circumstances before acting upon any of the matters discussed herein.
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