Quirin Privatbank Selects Tuum to Build Germany’s Most Modern Core Banking Platform

Quirin Privatbank has selected Tuum to overhaul its core banking infrastructure, aiming to become Germany’s most modern private bank. By adopting a real-time, API-first architecture, the bank is positioning itself to handle a surge in demand expected from the 2027 launch of the state-subsidized retirement investment account, the Altersvorsorgedepot.

What was announced

Quirin Privatbank has selected Tuum as its new core banking platform, a move intended to establish the institution as the most modern private bank in Germany. Under the new agreement, the bank will deploy Tuum’s Accounts, Deposits, Payments, and Loans modules to achieve a "real-time by default" operational standard. This transition is designed to enable the opening of new client accounts in minutes and the instant settlement of payments, including SEPA Instant. Beyond basic banking functions, the bank is targeting investment execution within a one-hour window and significantly faster production of regulatory reports.

Tuum will sit at the center of a wider rebuild of Quirin’s technology stack. Rather than running as a standalone system, it will be integrated with the bank’s other platforms to ensure data moves between them as it is created. The migration is strategically timed to coincide with the launch of Germany’s Altersvorsorgedepot on January 1, 2027. This state-subsidized retirement investment account will replace the existing Riester pension, and Quirin anticipates a substantial influx of new investment clients as the scheme opens, many of whom may be investing for the first time. The bank’s selection of Tuum’s cloud-native, API-first architecture allows it to scale for this volume while remaining free to add or replace individual components later without disturbing the wider stack.

"We built our reputation on giving clients advice they can trust, and our technology has to keep pace with that. Our ambition is to run the most modern private bank in Germany, and that means real-time by default: payments that settle instantly, data we can see as it happens, accounts opened within minutes. With Tuum, we can bring new products to market much faster and respond more quickly to what our clients need."

Sebastian Böttner, CIO, Quirin Privatbank

The companies involved

Quirin Privatbank is a German financial institution that distinguishes itself through a transparent, fee-based advisory model. Rather than earning commissions on third-party products—a practice common in the German market—the bank charges clients a flat fee for its services. This model underpins its operations across private banking, wealth management, and corporate finance. The bank also operates a digital wealth subsidiary, quirion, which caters to the robo-advisory and digital investment market.

Tuum provides a cloud-native core banking platform designed for flexibility and rapid deployment. The company has established a significant presence in the fintech sector by offering a modular alternative to monolithic legacy systems. Its architecture allows banks to select specific functional modules, such as lending or payments, to modernize their infrastructure incrementally. Tuum’s platform is built to support both traditional retail banking and emerging business models, positioning it as a key partner for established banks looking to digitize their operations.

What FF News has reported before

FF News has followed the digital evolution of both companies closely. In October 2026, we covered how Quirin Privatbank and Upvest Partner to Modernize German Wealth Management Infrastructure, a move that signaled the bank's intent to upgrade its investment backend. Tuum has been a frequent subject of reporting, recently being Named 'Fast Follower' in Everest Group’s Agentic AI in Banking Report. The company has also been expanding its leadership and global footprint, as seen in the news that Tuum Appoints Bhavna Rishi as Global Head of Partnerships and our report on how Tuum Powers Bank CenterCredit’s Digital Transformation.

What this means

This partnership highlights a critical shift in the German private banking sector, where legacy institutions are under increasing pressure to match the speed of fintech challengers. By anchoring its strategy to the 2027 pension reform, Quirin is making a calculated bet that operational efficiency—specifically onboarding speed—will be the primary differentiator in capturing a new generation of state-subsidized investors. For the wider market, this move raises the stakes for competitors who remain tied to batch-processing systems. The industry question now is whether other mid-tier German banks will follow suit in modernizing their cores before the Altersvorsorgedepot window opens, or risk being sidelined by more agile incumbents.