And no, they didn't do it to fight money laundering. They did it for €600 million in EU subsidies that were conditioned on passing this law.
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Some bootlicker downvoted my comment, lol... https://tweakers.net/nieuws/226916/tweede-kamer-gaat-akkoord-met-verbod-op-contante-betalingen-boven-3000-euro.html?showReaction=20343188#r_20343188