Tax loopholes and Policy design - 2026-01-24
When I saw the news about people in the UK fighting in court and roping in scientists to prove whether a chocolate-covered item was a biscuit or a cake (since cakes are GST-exempt), I learned something interesting: biscuits absorb moisture and go soft when left out, while cakes lose moisture and go hard. While this is a fun scientific fact, it’s a nightmare for a country trying to exempt "essential" items. These exemptions invite complexity; companies must label products with different tax rates in their software, leading to higher administrative costs and frequent mistakes. Businesses will always try to "game the system" to lower costs. We see this with the redesign of Kei cars in Japan or US importers modifying products to avoid specific tariffs (like the "Chicken Tax" on light trucks). Or worse, we end up with expensive court cases just to classify a snack. Another example is Singapore’s Certificate of Entitlement (COE) system. Because it is split into...