Invest1 distinct publisher2 min readPublished
Vault Core becomes the German ledger for retail and wealth clients from 2027, on a reported EUR600m budget against EUR300m of yearly savings by 2028, arithmetic that closes only if thirteen legacy systems actually switch off.
The Investor · Invest desk

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Thirteen systems have to go [16], and the numbers doing the rounds in the trade press, which the bank itself has not put its name to, put the consolidation spend at roughly EUR600m [8]. That is about EUR46m for each system switched off [17], a reasonable price for an estate assembled over decades, and it is being spent under an agreement that runs ten years [6]. On the calendar the source gives, the deal begins in 2026 [19], so the partnership outlives the 2028 deadline by eight years; if the promised run-rate saving held across those eight years it would come to about EUR2.4bn against the EUR600m outlay [20].
What decides whether the EUR300m arrives is the decommissioning calendar rather than the platform. Legacy systems and Vault Core are to run side by side through the transition to protect service continuity [5], products begin moving across in phases only in 2027 [4], and a cost line falls when an old system is turned off rather than when a new one goes live, which compresses thirteen decommissionings into a window of roughly two years [21]. Or rather, the more interesting version of the question is what counts as one of the fifteen, because an estate the bank defined is an estate the bank can recount, and the first products in the queue are everyday accounts such as call-money deposits [9], the least demanding entries in the book.
Yiping Li, the division's chief operating officer, called the selection the moment strategy turns into delivery [13]. Delivery here is GFT Technologies, appointed transformation and systems-integration partner on the strength of more than 25 years of work with Deutsche Bank, running a build-and-migration team across onshore, nearshore and offshore locations [7]. This is probably wrong, but I read the still-unnamed second platform [10] as holding the harder half of the estate rather than the residue, because the products that resist a clean split between product configuration and core ledger [12] are the ones you name last. An alternative reading holds that the second slot stays open on purpose, so the first vendor's build sets the integration standard and the second negotiation comes in cheaper. Either way the test is visible from outside the bank. Call-money deposits live on Vault Core during 2027, plus a named second platform, would make the 2028 figure real; another year of testing with no name attached pushes the EUR300m figure into 2029.
Ranked by verification strength, evidence, and original report placement.
Deutsche Bank's Private Bank has selected Vault Core, the cloud-native core banking platform from UK fintech Thought Machine.
The selection is the first concrete move in a plan outlined at the end of 2025 to shrink the division's core systems from 15 to two modern cloud-based platforms by the close of the current strategic cycle in 2028.
Vault Core will become the central engine for banking and lending products in Germany across both Personal Banking and Wealth Management.
Development work has already begun, testing is scheduled for later this year, and products will move across in phases starting in 2027.
During the transition, legacy systems and the new platform will run side by side to protect service continuity.
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Evidence-backed comparisons of source perspectives and observed adoption signals. Read the methodology
Which Builder, Operator, and Investor concerns the observed source mix emphasized—not a truth score.
Evidence, demonstrated adoption, hype gap, incentives, and confidence are assessed independently, each on its own current evidence. How these are measured.
One outlet, one announcement
The platform choice, the ten-year term, GFT's mandate and the 2027 migration start all reach us through a single Crowdfund Insider write-up of the bank's own announcement, with the Private Bank's COO and CIO and Thought Machine's CEO as the only voices. The two numbers that make the story consequential — EUR600m and EUR300m — the same outlet attributes to 'industry reports' it does not name.
Signed, not switched on
What exists today is a contract, a build in progress and a test date. No product has moved; the first candidates are ordinary call-money deposits rather than anything at the heart of the wealth business, and the second of the two target platforms still has no name, which leaves more than half the destination architecture blank.
Savings booked, systems still humming
Nothing here is invented — the deal is real and the technical direction is clear. The stretch is temporal: a EUR300m run-rate saving and a claim that the partnership 'sets an example' for large international banks are being published while all thirteen systems the saving depends on are still running, and while the bank itself has confirmed only Germany.
Three of four voices are selling the same win
Thought Machine gains its most quotable reference client, GFT converts a 25-year relationship into a multi-year migration mandate, and the Private Bank's COO gets to say strategy has turned into delivery while a cost programme is being judged. Only the CIO, who has to make parallel running work, carries downside. The reporting is a fintech trade title relaying that announcement close to its original shape.
Firm on the signature, soft on the savings
We can be reasonably sure who signed what, with whom, for how long, and roughly when things are meant to move. We cannot stand behind the spend, the savings or anything derived from them, and one publisher relaying one announcement gives no way to test either.