On the design of price caps as sanctions

A ceiling has been imposed on the price at which Russian producers can sell oil. The price cap is intended to reduce Russian government tax revenue without increasing the world price of oil excessively. We show that such price caps can have counterintuitive effects. A price cap can induce sanctioned producers to increase their output, thereby increasing their revenue. This increased output can also reduce the world price of the homogeneous product supplied by sanctioned and non-sanctioned producers. The welfare-maximizing price cap, which is often well below the unrestricted world price, can increase welfare substantially.