Austrian Bitcoin platform 21bitcoin has launched a service paying 1.21% annual variable interest on customers’ uninvested euro balances, with the option to collect these earnings directly in bitcoin at no conversion fee. The company claims to be the first provider in Europe to offer savings interest settled in BTC. This interest applies to all euros in the account, including funds reserved for pending purchases or limit orders, and requires no minimum deposit or lock-up period.

The interest is funded by Volksbank Raiffeisenbank Bayern Mitte eG, a German bank holding a stake in 21bitcoin since 2023. Customer euros are held in a segregated trust account as instant-access savings, with 21bitcoin passing the full interest amount to users without retaining a margin. Co-founder and CEO Daniel Winklhammer stated that wealth building begins with the euros set aside for purchase. The rate is subject to German withholding tax. Founded in 2021, 21bitcoin holds a MiCAR license in Austria and BaFin authorization in Germany, reporting over 100,000 users and €650 million in trading volume.