Tuum
Tuum develops core banking software for banks, fintech companies and banking-as-a-service providers. The cloud-based platform has separate modules for accounts, payments, lending and cards that customers can combine according to their needs. A core banking system is the software that keeps account records and processes the transactions behind a bank's customer services.
Financial institutions use core banking software to record balances and transactions and administer their financial products. Tuum supports replacing an older core system or introducing selected modules alongside existing infrastructure. This modular approach lets an institution modernize a particular business line without making a complete system replacement the first step.
Modular core banking from Estonia
Five Estonian banking technology specialists founded Tuum and built a modular core banking platform that is API-first, cloud-agnostic and configurable without code (Tuum). Tuum's clients range from large multinational banks to fintechs and small firms. Tuum has offices in London, Barcelona, Dubai and Abu Dhabi.
AI and legacy migration
Tuum calls its product "the most AI-capable core banking platform on the market" and says it connects to any agentic system or LLM. Tuum's Tuum AI tool reads a bank's legacy systems and lists dependencies and undocumented rules before the move to a new core (Tuum). Legacy modernization in banking covers the replacement of old core systems.
Customers in Europe
The Finnish OP Financial Group rebuilt its unsecured consumer lending on Tuum's cloud-native core; the project became a Celent Model Bank case study for core transformation in 2024 (Tuum). Tuum's other European customers include the Estonian bank LHV, Multitude, CrediNord for business lending and Januar, which serves crypto businesses (Tuum). Banking as a service in Germany covers the same model in the German market.
Upcoming events on banking technology
Digital Infrastructure & Sovereignty
Does Tuum offer Islamic banking?
Yes. Tuum sells a separate modular Islamic banking product.
Where does Tuum come from?
From Estonia, where its founders built the platform. Core banking in Germany covers the German market for such systems.
Banking technology
Other technology providers
Tuum and Finance Loop
Finance Loop covers core banking, cloud and AI in banks in its Digital Infrastructure & Sovereignty track. Bankers and technology providers meet at Finance Loop events in Frankfurt and other German cities.
Finance Loop is a professional network supporting the institutional use of emerging technologies in finance, such as AI, digital payments, cloud and blockchain solutions. Finance Loop helps its members build skills and personal networks in these fields: Investment & Digital Assets, Payments & Digital Money, Digital Infrastructure & Sovereignty, and Risk & Compliance.