Payments and privacy in the digital economy

Mar 2, 2024

Toni Ahnert , Peter Hoffmann , Cyril Monnet

Working Paper No. 00139-00

privacy Data Sharing Central Bank Digital Currency Payments Financial Intermediation

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We propose a model of financial intermediation, payments choice, and privacy in the digital economy. While digital payments enable merchants to sell goods online, they reveal information to their lender. Cash guarantees anonymity, but limits distribution to less efficient offline venues. In equilibrium, merchants trade off the efficiency gains from online distribution (with digital payments) and the informational rents from staying anonymous (with cash). Privacy-preserving digital payments raise welfare by reducing privacy concerns, but only arrangements that enable data-sharing through consent functionalities guarantee that the social optimum is attained.


Toni Ahnert

Toni Ahnert

European Central Bank

Peter Hoffmann

Peter Hoffmann

Cyril Monnet

Cyril Monnet