Why Money Launderers Love $100 Bills

The episode opens with discussion of the paradox of banknotes: despite declining cash usage in everyday transactions (roughly 9-13% of transactions), the amount of cash in circulation continues hitting record highs. The US has $2.5 trillion in circulation, with approximately 85% being $100 bills, yet the average American carries only $430 in cash. This disconnect raises questions about what $100 bills are actually used for.

Oliver Bullough explains that global money laundering is estimated at $2-5 trillion annually (2-5% of global GDP), a figure derived from a late-1990s IMF estimate by Michel Candesso that hasn't meaningfully changed despite massive regulatory efforts. This stagnation suggests anti-money laundering efforts have failed to reduce the criminal economy's share of global GDP.

Bullough details multiple laundering methods: cash smuggling (hundreds of billions annually), trade-based money laundering (estimated $1 trillion yearly via goods misinvoicing), and the sophisticated Chinese Money Laundering Networks (CMLNs). The Vancouver model exemplifies how Chinese capital controls create demand for illicit money transfer—wealthy Chinese citizens pay drug cartels in Canada with cash, creating debts repaid through drug shipments, completing triangular trade routes.

The discussion covers carousel fraud or Missing Trader Inter-Community (MTIC) fraud in Europe, which exploits VAT refund mechanisms. Criminals import goods VAT-free, sell to shell companies, export them to claim VAT refunds never paid—essentially creating value from nothing. This scheme generated €50 billion annually and became so profitable that organized crime groups collaborated rather than competed.

Historical parallels emerge with Medici banking: both systems hide cash movement in trade paperwork. Modern criminals similarly use luxury goods (watches, handbags), trade goods (Caterpillar tractors), and cryptocurrency (specifically stablecoins) as value storage and transfer mechanisms. The key principle is maximizing dollar value per unit of spatial volume—why $100 bills and Rolex watches are preferred to bulky alternatives.

Regarding regulation, Bullough argues the $200 billion annual compliance cost is ineffective. Banks file millions of suspicious activity reports annually, but law enforcement lacks resources to investigate them, creating bureaucratic theater rather than crime prevention. The system burdens legitimate financial institutions with fines while criminals exploit cash, crypto, and trade-based methods outside regulated channels.

On seigniorage, the profit from money creation, Bullough explains two perspectives: the simple view that printing $100 bills costing 9 cents yields 99.91% margins; the sophisticated view that banknotes are interest-free loans to governments. With $2.5 trillion in US currency outstanding and government debt at $40 trillion, interest-free circulation represents roughly 6% of debt service savings—approximately 1% of federal budget.

The conversation concludes that eliminating high-denomination bills faces collective action problems: if the US stopped producing $100 bills, criminals would shift to euros while America lost seigniorage income. International coordination appears necessary but politically infeasible, as jurisdictions profiting from financial crime (like London's offshore finance) lack incentive to cooperate. Bullough advocates for politicians engaging with money laundering mechanics and reducing suspicious activity reports in favor of actual criminal prosecution and asset seizure.