The world's most card-intense consumer economy
Credit-card spending runs at ~90% of nominal GDP, the highest ratio in the world. The structure dates to the 1997-98 IMF crisis when the government launched tax-credit incentives for card use and mandatory-acceptance rules, engineering the transition from cash to cards as a tax-visibility measure. Three decades on, the incentives remain embedded; the effect is that Korean super-apps sit on top of cards rather than displacing them.
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