a16z: Without Relying on Interest Spreads or Burning Cash, How Did Revolut Become Europe's Most Profitable New Bank?

Author: Alex Immerman & Santiago Rodriguez

Translation: Deep Tide TechFlow

Deep Tide Introduction: a16z dissects how Revolut, a company with a 76% CAGR in mature financial markets, achieved this growth in their 2025 annual report. The numbers alone are astonishing, but what’s more worth noting is the underlying growth logic: not relying on interest rate spreads, ROE 3-4 times that of traditional banks, user NPS more than twice the industry average. Taken together, this is no longer just a challenger bank story.

Full text below:

As growth-stage investors, we often say that excellent companies start talking with their numbers. As a UK company, Revolut is required to disclose annual financial data, and its figures are extraordinary—this is a conservative statement:

Revenue grew 46%, reaching £4.5 billion

Pre-tax profit increased 57%, reaching £1.7 billion, with a profit margin of 38%

Retail customers grew 30%, adding 16 million in 2025

Revolut has penetrated all over Europe, with no single country accounting for more than 25% of fee income

Revenue is distributed across 6 business segments, with no single category exceeding 22%

11 product lines each generate over £100 million

Return on equity (ROE) reached 35%, a record level among peers (despite excess capital)

Revolut continues to grow rapidly and efficiently—its “Rule of 75%” (revenue growth + net profit margin) ranks among the highest in modern, mature financial institutions.

More importantly, we believe Revolut still has ample room for customer growth and monetization in existing markets. And that’s not to mention potential new markets—Revolut has just applied for a US banking license, demonstrating true global ambitions.

This is not your grandma’s new bank. Revolut has the potential to become one of the world’s largest banks. There’s still a long way to go, but we believe the foundation has already been laid.

Without further ado, let’s get to the main points.

1. One of the fastest-growing financial institutions globally

Starting with revenue. Revolut’s revenue growth is astonishing.

Alongside Nubank (NU), they stand in an independent league compared to other consumer fintech companies (see below). Since surpassing $1 billion in revenue in 2022, Revolut has achieved a remarkable compound annual growth rate (GBP basis of 70%) over four years, with a 76% CAGR (GBP). It’s one of the fastest-growing companies after crossing the $1 billion revenue mark. Considering Europe’s highly mature consumer banking sector (unlike NU’s emerging markets), this growth is especially notable.

Chart: Revenue converted to USD at year-end exchange rates; NU revenue is net of interest and expected credit losses (ECL)

Source: Revolut 2025 Annual Report

For comparison: in 2022, Revolut’s revenue was less than or comparable to Robinhood, Affirm, SoFi, Adyen, Wise, or Chime. Now, its revenue is 33% to nearly 3 times higher than any of these well-known consumer fintech firms.

2. Dissecting Revolut’s growth engine: six engines running simultaneously

A key differentiator for Revolut is that it’s no longer a one-trick pony. It has multiple revenue drivers working in tandem.

Revolut started by addressing a real pain point for Europeans: foreign exchange fees. With Revolut, Europeans traveling within or outside the Eurozone or sending money abroad no longer face payment delays or bank charges of 5%.

From a once single product, region-focused solution, Revolut has grown into a comprehensive personal and business banking platform. Today, in Europe (its main operating region), about 1 in every 3 new accounts is opened with Revolut:

Chart: Survey conducted in key markets, using a general adult sample; respondents indicated where they opened accounts and the timing

Source: a16z European Banking Survey, July 2025 (N=3500)

In Europe, 1 in 5 working-age individuals uses Revolut. The company’s product iteration speed and execution in the euro area are truly exceptional.

Revolut offers a complete suite of personal and business banking features, driving growth across diverse European markets. Importantly, its product suite increasingly attracts users in the Eurozone who don’t initially care about foreign exchange value propositions. We could say Revolut’s platform is “comprehensive,” but that might underestimate its continuous new feature launches.

It’s not just about quantity—it’s also about quality of execution. Users love it. In 2024, the company reported that 65% of new users came through organic growth or referrals. Our research also shows Revolut’s user NPS is more than twice the industry average.

Overall, user numbers continue to grow at a 30% CAGR, reaching 68 million by the end of 2025.

Source: Revolut Annual Report

To put 68 million users into perspective: JPMorgan— the world’s largest bank outside China—has about 85 million consumer clients (over 70 million of whom are considered “digital active”).

Admittedly, JPM’s total AUM far exceeds Revolut’s scale, but from a pure user coverage perspective, Revolut is no longer just a challenger; it’s a real competitor. Its user base surpasses the combined total of Sofi, Robinhood, Dave, and Chime.

A full product suite not only attracts more customers but also creates a more diversified revenue structure:

Source: Revolut Annual Report

The company discloses six main revenue streams:

Interest income

Card payments

Subscriptions

Other income

All six segments grew YoY, with no single segment exceeding 22% of total revenue.

The degree of diversification even exceeds what this disclosure shows, as each revenue stream may include multiple sub-products (e.g., the wealth segment includes both public stocks and crypto assets). By 2025, each of the 11 product lines will generate over £1 billion.

Importantly, 76% of revenue comes from fees, up more than 4 percentage points from 2024, while interest income accounts for just under 22%. This is the opposite of mature banks, which derive over 70% of income from interest, and one reason Revolut can achieve high ROE (discussed later).

Unsurprisingly, this diversified revenue structure also supports diversified ARPU growth.

Chart: ARPU defined as revenue per product line divided by average customers during the period

Source: Revolut Annual Report

Since 2022, each disclosed revenue stream has grown, with overall ARPU increasing by about 65%, at an 18% CAGR.

Diversification is crucial because it sustains compound growth and builds resilience. Some product lines may explode in a given year, while others face headwinds (e.g., last year’s interest rate decline). But overall, relying on new product additions and core business share gains can still drive strong ARPU growth.

3. Top-tier efficiency

Revolut demonstrates rapid user growth, strong product iteration, and diversified revenue—efficiency that lives up to expectations.

In 2025, Revolut achieved 46% revenue growth, a 29% net profit margin, and a “Rule of X” (growth + profit margin) of 75%. The “Rule of 40” is no longer sufficient!

Chart: 2025A data or forecasted analyst estimates for companies not yet reporting; bubble size indicates total 2025 revenue; NU revenue is net of interest and ECL

Source: Public financial data from CapIQ, analyzed by a16z

This combination of growth and efficiency puts Revolut in a very rare position—companies with over $1 billion in revenue achieving a Rule of 75% are few and far between in history.

In fact, considering that Robinhood and Dave are both expected to grow less than 30% next year, Revolut may soon stand alone at the top.

Efficiency has become part of Revolut’s DNA. Developing banking infrastructure in-house, organic growth, and strict cost control have resulted in a 29% net profit margin. With very few physical branches, Revolut already has a meaningful cost advantage over traditional banks, and as scale continues to grow, this advantage compounds.

AI is further enhancing operational leverage. For example, in customer service:

In 2024, Revolut’s AI chatbot reduced problem resolution time by 80%. By 2025, this improvement continues—retail resolution time drops another 40%, and enterprise resolution by over 50%, while user NPS improves nearly 12 points YoY. Revolut’s AI assistant now handles over 75% of customer inquiries.

This efficiency has enabled Revolut to achieve the highest ROE among fintech scale-ups (and still improving). We’ve previously emphasized ROE’s importance for bank valuation—Revolut exemplifies scale efficiency.

Chart: ROE defined as net income in 2025 divided by average equity during the period

Source: Public financial data from CapIQ

Revolut’s 35% ROE far exceeds that of other leading consumer fintechs and is about 3-4 times that of mature banks. Note that Revolut is in a “capital surplus” state (reporting equity above regulatory capital requirements), meaning its “true” ROE could be even higher.

Few companies can achieve such capital-efficient growth.

4. Ample room for growth: ARPU × users

Despite impressive 2025 figures, we see a huge runway ahead. Returning to the core revenue growth formula (users × ARPU), both variables have significant upside.

More users can be acquired

The company reports 68 million users by the end of 2025. As mentioned, this is a sizable number but only accounts for less than 15% of the adult population in Europe (excluding Russia), which is about 450-500 million. This doesn’t include Australia, Singapore (existing markets), Mexico, Brazil (new markets), the US (just applied for a banking license), or many other regions to explore.

Revolut still has a lot of potential users to capture.

Moreover, the current user composition suggests future users will be different from today’s. Unlikely to be a surprise, Revolut’s users tend to be younger and more digital-savvy—these users represent the direction most of the population is heading.

Chart: Surveyed markets include UK, Ireland, France, Spain, Italy, Germany, and Poland

Source: a16z European Banking Survey, Feb 2026 (N=4200)

As Revolut continues to onboard a large proportion of first-time account holders (and persuades older demographics that banking can be enjoyable), market share should keep growing.

ARPU also has room to expand

Another growth dimension for ARPU is even larger.

The transfer of wallet share in financial services typically takes a decade rather than a year. Revolut continues to earn user trust: primary account users (per company definition) grew 45%, outpacing overall user growth of over 30%.

The rapid growth of primary account users is crucial because, in terms of ARPU, “primary account” users are the real prize:

Our research shows that traditional banks with mature customer relationships can push their “primary account” share above 60%.

Revolut’s primary account users report that their spending and savings on the main account are about twice that of any other accounts they hold—and spending increases with age.

In short, more (and increasingly mature) primary account users can translate into higher ARPU. Based on traditional banking experience, Revolut’s potential for increasing “primary account” share is quite high.

Another aspect of primary account growth is the untapped loan income opportunity:

As mentioned, 76% of Revolut’s revenue currently comes from fees, whereas mature banks typically derive about 30%.

By the end of 2025, Revolut’s loan-to-deposit ratio (LDR) is only about 6%, compared to 70-90% for mature banks (around 4% based on total customer balances). Loan balances have roughly doubled in 2025 and can continue to compound for years.

Of course, steady loan growth takes time. But if we use traditional banks as a benchmark, Revolut has ample opportunity to significantly expand ARPU by leveraging its balance sheet and offering better loan products. For comparison, simple estimates suggest that Barclay’s UK consumer and business banking ARPU is about £435—roughly 6 times Revolut’s current level.

Here’s where Revolut stands in terms of coverage (penetration) and depth (primary account share):

Source: a16z European Banking Survey, Feb 2026 (N=4200)

Revolut has plenty of runway to keep pushing upward—both by expanding its user base and deepening relationships into “primary accounts.” The latter should happen organically as its young user base matures.

5. Conclusion: No longer just a challenger

Revolut’s impressive 2025 figures are significant not only because they are remarkable but also because they sketch a complete picture of a financial institution—not just a “challenger” bank.

User growth remains excellent, monetization continues to broaden, primary account adoption is rising, and even as the company invests and expands rapidly, profitability is strengthening. This combination is extremely rare in financial services (or any industry).

There are still execution challenges ahead—especially in lending, regulation, and entering new markets—but after reading this report, we believe the focus has shifted from “Can Revolut become a scaled banking platform?” to “How big can this platform get?”

The company’s publicly stated long-term goal is “to have 100 million daily active users in 100 countries.” The journey is already underway.