Bitcoin Savings App Bitstack Secures $15M Series A to Expand in Europe and Launch Bitcoin-Rewards Visa Card

Bitstack, a French Bitcoin savings app, announced the closure of a $15 million Series A financing round led by 13books Capital, with participation from YC, Serena, Plug and Play, and other existing investors. The funding signals robust investor confidence in crypto savings platforms and sets the stage for accelerated growth across Europe.

Proceeds will fund European expansion and product upgrades, including Stackback, a VISA debit card offering Bitcoin rewards, with a planned launch in January 2026. The company positions Stackback as a key driver of user engagement and broader adoption of Bitcoin savings tools.

Bitstack aims to become the leading Bitcoin savings platform in Europe, leveraging strategic partnerships and a user-centric product roadmap to scale crypto savings adoption continent-wide while maintaining a prudent, regulation-conscious approach to development and security.