Three specialist doctors in Singapore have lost a High Court challenge over a tax structure designed to minimize their liabilities. Dr. Adrian Tan Chek Jin, Dr. Caroline Khi Yu May, and Dr. Jocelyn Wong Sook Miin, obstetricians and gynecologists, paid themselves modest monthly salaries between S$5,000 and S$6,000. They then extracted millions in dividends and interest-free loans from a network of companies they controlled.
The Inland Revenue Authority of Singapore (IRAS) disregarded their business arrangement after an audit, treating the income as personal. The High Court upheld this decision on June 18.
The arrangement exploited the gap between Singapore's personal income tax rate, which can reach 24 percent, and the corporate tax rate of 17 percent. Dividends are generally exempt from personal tax because the company has already paid corporate tax.
Experts noted the structure was problematic because the doctors' salaries were not at market rates and did not grow with company profits, despite the revenue being generated by their personal efforts. The interest-free loans were also deemed a risk, as the doctors were under no obligation to repay them.
IRAS invoked Section 33 of the Income Tax Act to reverse the tax advantages. Starting from the year of assessment 2023, a 50 percent surcharge on additional tax is imposed when this section is successfully invoked, creating a significant financial penalty.
The case highlights the line between legal tax avoidance and arrangements that lack a genuine commercial rationale.