Quirin Privatbank Selects Tuum for Core Banking Upgrade
Financial institutions adopting modular, API-first architecture can better accelerate regulatory reporting and account cycles.
Updated on Oct. 26, 2026 in Financial Services
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Quirin Privatbank has selected Estonian provider Tuum as its new core banking software vendor to support its digital operations. The partnership will integrate modular banking infrastructure to accelerate regulatory reporting and account opening ahead of the 2027 launch of the Altersvorsorgedepot investment account.
Why it matters
Financial institutions are increasingly shifting toward API-first, modular architectures to replace legacy systems. This upgrade allows banks to modernize specific components like payment settlement and deposit management without requiring a complete, high-risk system overhaul.
Quirin Privatbank, founded in 1998, is integrating four Tuum modules to support its digital subsidiary, quirion. The project aims to achieve investment execution within the hour once the new scheme launches.
The players
Quirin Privatbank
A German private bank founded in 1998 that operates the digital subsidiary quirion.
Tuum
An Estonian banking software company providing API-first modular core banking solutions.
The details
Tuum provides an API-first architecture that allows Quirin Privatbank to replace and integrate specific banking functionalities into its legacy environment. The modules cover accounts, deposits, payments, and loans, including native support for SEPA Instant settlement. By modularizing these workflows, the bank aims to reduce the latency currently associated with account opening and mandatory regulatory reporting.
Timeline
Quirin Privatbank was founded in 1998.
The Altersvorsorgedepot investment account launches on 1 January 2027.
Market Landscape
This move follows the broader industry trend of adopting API-first core banking architectures to enable faster product deployment. It marks a shift away from the traditional, monolithic banking platforms that often struggle with rapid regulatory and operational integration.
Operators in financial services should monitor how modular integrations impact their own time-to-market for new customer products. The transition to SEPA Instant and API-based data movement is becoming a benchmark for competition in investment-heavy banking segments.
The takeaway
Legacy banks that replace monolithic backends with modular, API-led systems gain significantly faster operational agility for future product launches. Use this development as a signal to evaluate whether your current software stack supports modern payment standards like SEPA Instant.
Further reading
For additional insights on modernizing banking infrastructure, see Financial Services.
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Do you trust that new banking software updates will make managing your personal accounts easier?
