Monument Bank: Deposits Tokenised in Pioneering move by UK Banking Sector

Monument Bank, a Bank of England-regulated institution serving the UK’s mass-affluent market, has announced plans to tokenise up to £250 million in retail customer deposits on Cardano’s privacy-focused Midnight network. This makes it the first UK-regulated bank to bring retail deposits onto a public blockchain.

Overview of Monument Bank's Announcement

The announcement, made on 25 March 2026, is structured in three distinct phases. In the first phase, Monument will mirror up to £250 million of customer savings balances as digital tokens on the Midnight network. Each token will represent a one-to-one claim on pounds sterling held by the bank. These deposits will remain interest-bearing, fully backed, and redeemable on demand. Critically, they will continue to carry full protection under the UK’s Financial Services Compensation Scheme (FSCS). This means the familiar £85,000 safety net remains in place, regardless of the underlying infrastructure.

The second phase extends beyond deposits into tokenised investment products. These include private market funds, commodity exposure, and structured assets delivered directly through Monument’s mobile app. The third phase enables lending against those tokenised holdings within the same environment. Taken together, the ambition is not simply to digitise savings but to build a single, integrated system where a client’s deposits, investments, and borrowing all sit on the same programmable infrastructure.

Monument has also signalled a play beyond its own balance sheet. Its affiliate, Monument Technology, intends to offer the same tokenised deposit functionality through a Banking-as-a-Service platform. This will give other financial institutions access to the same underlying architecture. This shift transforms the announcement from a single product launch into a potential industry template.

Understanding Monument Bank's move to Tokenise Deposits

To grasp the implications of tokenised deposits, it is essential to clarify what does not change. Your money remains your money. It stays in a UK-regulated bank, continues to earn interest, and can be withdrawn whenever desired. It is also covered by the FSCS up to £85,000. Monument is not asking customers to buy cryptocurrency or take on any new financial risk.

What changes is the record of ownership. Today, when you deposit money at a bank, your balance exists as an entry in the bank’s internal database. The bank tracks what you own; you depend on the bank’s systems to inform you of your balance and to process any movement of those funds. Tokenisation replaces that internal database entry with a digital token on a shared, external network. Think of it as the difference between a handwritten IOU kept in someone’s drawer and a publicly verifiable certificate that anyone authorised can read and verify in real time.

In Monument’s case, each pound you deposit becomes represented by a token on Midnight’s blockchain. That token is mathematically tied to the underlying funds. It cannot be duplicated or altered. Because it exists on a shared network rather than inside the bank’s proprietary system, it can do things that a traditional deposit record cannot. This includes moving instantly, being used as collateral without manual processing, and being combined with other financial products in ways that currently require significant administrative overhead.

The privacy aspect is also crucial. Most blockchains are entirely public, meaning anyone can see any transaction. Midnight uses a cryptographic technique called zero-knowledge proofs. This allows the system to confirm that a transaction is valid without revealing the details of that transaction to anyone other than the two parties involved. In banking terms, this means the efficiency benefits of a shared network without the confidentiality issues that have previously prevented mainstream financial institutions from using public blockchains.

For a Monument customer, the immediate experience may feel unremarkable. Your savings app still shows your balance. The difference lies in what Monument can build on top of that infrastructure. In later phases, customers may be able to put that same balance to work in investment products or use it as security for a loan, without the usual friction of moving money between separate accounts and institutions.

The Importance of Privacy Infrastructure

The choice of Midnight is significant. Most public blockchains are, by design, transparent: anyone can see transaction data. This transparency is architecturally incompatible with banking, where confidentiality is both a regulatory requirement and a basic expectation of customers. Midnight, developed by Shielded Technologies and linked to the Cardano ecosystem, addresses this through zero-knowledge proof cryptography. This mechanism allows the network to verify that transactions are valid without revealing the underlying data.

This is not a minor technical detail. The inability to combine public blockchain infrastructure with genuine financial confidentiality has been a persistent reason why tokenisation efforts in retail banking have remained confined to permissioned, private systems. Monument’s strategy is that Midnight’s architecture resolves that tension in a way that can withstand scrutiny from the Prudential Regulation Authority (PRA) and the Financial Conduct Authority (FCA).

Monument Bank: A Brief Overview

Monument launched in 2021 as a digital-first challenger bank specifically designed for the mass-affluent segment. This includes professionals, entrepreneurs, and savers with investable assets broadly between £50,000 and £5 million. This cohort has historically been underserved by both high-street banks and private banking. The bank currently serves more than 100,000 customers and holds approximately £7 billion in deposits. Therefore, this initiative begins with a real customer base rather than a hypothetical one.

This context is crucial. Tokenisation projects in financial services have accumulated an extensive history of pilots that never scaled. Often, these projects were designed as proof-of-concept exercises with no direct commercial pathway. Monument is not a research project. It is a regulated, deposit-taking institution with a functioning balance sheet, and it is committing to tokenise a defined subset of real customer funds. The first-mover framing is accurate: no UK-regulated bank has previously put retail deposits onto a public blockchain.

The Regulatory Landscape in the UK

The announcement arrives at a moment when the UK’s digital securities infrastructure is still evolving. The Financial Services and Markets Act 2023 created a legal basis for digital securities. The FCA and Bank of England have been developing the Digital Securities Sandbox as a controlled environment for firms to test tokenised financial instruments under regulatory oversight. Monument’s move is not happening inside that sandbox, but it exists within the same regulatory conversation. It will be closely monitored by the FCA and PRA as a live test of whether tokenised retail banking products can operate within existing consumer protection frameworks without requiring a bespoke regulatory regime.

The broader international direction is also relevant. The week of Monument’s announcement, the New York Stock Exchange partnered with Securitize to develop a blockchain-based platform for tokenised equity trading. Additionally, the US House Financial Services Committee convened its first dedicated tokenisation hearing. The regulatory moment, both in the UK and the US, is one of cautious opening rather than active restriction.

Implications of Tokenised Deposits for Founders and Investors

For UK founders exploring equity tokenisation, Monument’s announcement does not change the immediate regulatory picture around securities. Tokenised deposits and tokenised equity occupy different areas of the regulatory framework. The FCA’s position on the latter continues to develop through the Digital Securities Sandbox. However, the Monument move matters as a proof point for the broader argument that tokenisation can operate within mainstream regulatory constraints rather than around them.

The three most important structural features of this announcement are worth noting: FSCS protection remains intact, the bank remains the counterparty, and the customer does not need to hold or manage a digital asset directly. This combination is precisely what makes tokenised products accessible to individuals who have no interest in cryptocurrency but do have an interest in better infrastructure for their savings and investments. If executed as described, Monument will have demonstrated that the gap between blockchain-based financial infrastructure and regulated retail finance can be closed from within the existing system.

The question for UK financial services is no longer whether tokenised infrastructure can be built inside the regulatory perimeter; Monument has just committed to answering it with live customer deposits.

Conclusion

Monument Bank's initiative marks a significant step forward in the integration of traditional banking with blockchain technology. By tokenising retail deposits, Monument is not only enhancing customer experience but also setting a precedent for other financial institutions. The implications of this move extend beyond mere convenience; they signal a shift towards a more integrated and efficient financial ecosystem. As the regulatory landscape continues to evolve, the success of Monument's approach could pave the way for broader acceptance and implementation of tokenised financial products in the UK and beyond.

Disclaimer:

This article is provided for general information only and does not constitute legal, financial, or investment advice. The regulatory treatment of tokenised assets and digital securities varies by jurisdiction and continues to evolve. Readers should seek independent professional advice before making any financial, legal, or regulatory decisions.