The IRS is examining how UnitedHealth moves money through foreign subsidiaries and whether the company underpaid taxes. According to reporting, the agency is seeking to increase UnitedHealth’s taxable income for four consecutive years.

The companies involved are not publicly disclosing key details, including the magnitude of the alleged underpayment or the specific tax adjustments at issue. Neither side is reported to state how much is potentially at stake. The scrutiny centers on transfer of funds and related tax treatment tied to offshore entities, which can affect how much income is attributed to U.S. tax obligations.

The accounts emphasize the procedural nature of the dispute—an IRS review aiming to reassess taxable income over multiple years—while providing limited publicly confirmed figures. The broader angle is that this investigation follows scrutiny commonly directed at multinational corporations’ cross-border arrangements and the tax outcomes they generate. Public information remains limited on findings and next steps in the review.