Paris-based Bitstack expands its Bitcoin savings suite with fresh €12.9 million funding round

Bitstack, France’s Bitcoin savings application, announces today a €12.9 million ($15 million) Series A funding round in order to accelerate its European expansion and enhance its product offering, including the rollout of a euro account with a French IBAN and a VISA debit card featuring round-ups and Bitcoin “stackback” rewards.

The round was led by 13books Capital, with participation from existing investors AG2R LA MONDIALE, Plug and Play Ventures, Serena, Stillmark, and Y Combinator.

Alexandre Roubaud, co-founder and CEO at Bitstack, explains: “In three years, Bitstack has achieved exceptional growth: more than 300,000 active users have saved over €300 million in Bitcoin, and our revenue has increased tenfold in two years. These results demonstrate the growing interest of the French population in Bitcoin, in a context of economic uncertainty and monetary tensions. We are now the most widely used French crypto app.”

This Series A round raised by Bitstack joins a growing wave of 2025 European funding for crypto-saving and digital-asset startups.

For example, BitDCA from Prague secured €7.6 million earlier this year to scale its “Littlebit” app, which automates everyday purchases into small Bitcoin investments. Meanwhile, in the institutional infrastructure segment, Tangany – a Munich-based crypto-custody provider – raised €10 million to grow its regulated digital-asset custody platform. And even larger, Treasury, a new Amsterdam-based Bitcoin “vault” startup, secured €126 million with the aim of becoming Europe’s leading holder and manager of Bitcoin reserves.

Viewed together, these rounds – totalling roughly €143 million – illustrate that 2025 continues to see substantial capital flow into both retail-oriented Bitcoin savings apps (like Bitstack and BitDCA) and institutional-grade custody or asset-management infrastructure (like Tangany and Treasury).

Bitstack’s raise represents a significant share of that activity, signalling that investors remain confident about demand for consumer-facing tools that make Bitcoin savings accessible across Europe – even as regulatory frameworks (such as MiCA) evolve.

Founded in 2021 by Alexandre Roubaud and Kabir Sethi, Bitstack offers a mobile application that enables users to save in Bitcoin simply, smoothly, and effortlessly over the long term. Bitstack is best known for enabling users to automatically round up purchases to the nearest euro (e.g., a €2.60 coffee rounded to €3.00, with the €0.40 difference saved in Bitcoin).

Bitstack now operates in a dozen European countries, such as Germany, Spain, the Netherlands, and Italy, offering content in the languages of each market where the app is available.

This expansion is supported by the MiCA (Markets in Crypto ‑ Assets) licence obtained on June 30 2025 from the AMF. Bitstack is the third French company to secure this approval.

Michael McFadgen, co‑founder and Partner at 13books Capital, adds: “With this fundraising round, Bitstack enters a new dimension. By expanding its geographic footprint and enhancing its product suite, including a VISA debit card with stackback and a euro account with a French IBAN, Bitstack is now ideally positioned to cement its status as Europe’s leader in Bitcoin savings.”

Prices in the euro area have risen 23.4% between October 2020 and 2025, according to the European Central Bank (ECB), reflecting a marked erosion of the currency’s purchasing power. Bitcoin, capped at 21 million units, offers an alternative that continues to grow in adoption. Today, nearly 4 million French people hold Bitcoin.

Bitstack aims to place itself as a key player in meeting this rising demand by making Bitcoin savings accessible to the public, with a mission to help people preserve their purchasing power and achieve their life goals.

Bitstack will be expanding its offering with innovative services for French users:

• A euro account with a French IBAN, enabling users to send and receive transfers easily, for example, to convert part or all of their salary into Bitcoin.
• A VISA debit card that rewards long ‑ term savings discipline through two mechanisms:
  • Real‑time, fee-free round-ups on all purchases made with the card.
  • “Stackback”: users can earn up to 1% in Bitcoin on all euro spending, at any merchant, with no cap – a first in Europe.
  • A beta phase for the card begins on 13 January 2026 and will be accessible to the first 5,000 individuals on the waitlist.

The post Paris-based Bitstack expands its Bitcoin savings suite with fresh €12.9 million funding round appeared first on EU-Startups.