In many countries, well-meant ad hoc tax incentives proliferate over time, creating an opaque corporate tax structure and many unanticipated tax loopholes. Tax authorities in several countries have considered and sometimes introduced minimum corporate taxes. Liability under such a tax is...

King-Fullerton methodology cannot assess the minimum-asset tax (MAT) because it cannot handle uncertainty. We present an alternative based on option pricing, and show how carry-over rules, depreciation conventions and uncertainty affect the MAT burden. Using Brazilian data, we show that: (a)...