A Quantitative Analysis of the Holding Limit for a Digital Euro
A paper co-written by a Deutsche Bundesbank staffer conducts a quantitative analysis to calculate a potential digital euro holding limit. It draws on a detailed dataset including individual bank level as well as aggregated banking group data for the entire euro area. It uses data and a simulation approach on the number of accounts in individual institutions and on account balance distribution. To assess the De impact on banks, the analysis is conducted for two different points in time reflecting different monetary policy environments with accommodative and restrictive stance. The effects of the CBDC are considered in three holding limit scenarios. The calculations reveal a lower bound holding limit of around 1,000 euro that almost all banks can handle. The results show a strong heterogeneity between the various euro area banks, as many could offer significantly higher limits. For the implementation of holding limits, the paper therefore proposes a model that has a low mandatory limit which every institution must offer, while providers can decide for themselves whether they like to offer a higher limit depending on their individual situation and customer base, subject to an approval process.
