Why Does Nubank Want to Pay Up to $13 Billion for a Bank in Europe?

Nubank’s potential acquisition of UK-based Monzo triggered an immediate reaction on Wall Street. Nu shares fell as much as 9% after reports that the company was discussing a deal valuing the British lender at roughly $10.6 billion to $13.3 billion, an acquisition that could amount to as much as 20% of Nubank’s market value.

Monzo is an attractive asset. The bank has around 15 million customers, more than $30 billion in deposits, a strong presence in the UK and a banking license in Ireland that could serve as a platform for expansion across the European Union. By acquiring Monzo, Nubank would not simply be buying a customer base, but also a brand, deposits, regulatory infrastructure and years of development in the European market.

The problem is the price. At the top end of the reported range, Nubank would be paying close to 6 times Monzo’s annual revenue and nearly 60 times adjusted pre-tax profit. The British bank was valued at around $6 billion in 2024, meaning a deal near $13 billion would more than double its valuation in less than two years.

A potential acquisition would also challenge one of the core assumptions behind the Nubank story. The company built its reputation through organic expansion, starting in Brazil and then taking its model to Mexico and Colombia with proprietary technology, lean operating structures and low customer acquisition costs. Buying Monzo would mark a partial shift away from that playbook toward large-scale M&A.

There is, however, a clear strategic rationale. The UK is a mature, highly competitive banking market already populated by strong fintechs. Building a meaningful franchise from scratch could take many years. Paying a premium for Monzo would, in effect, mean paying to buy time and accelerate Nubank’s entry into Europe.

That is what helps explain the market’s unease. The debate is not simply whether Monzo is a good bank, but whether Nubank should pay this much for it and take on a complex integration while still expanding in Mexico, Colombia and the United States. The question is straightforward: if Nubank is so good at building banks, why does it want to pay up to $13 billion to buy one?