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

Revolut revenue of £4.6 billion, profit margin of 38%, with one in three new accounts in Europe choosing it.

Authors: Alex Immerman & Santiago Rodriguez

Translation: Deep潮 TechFlow

Deep潮 Guide: a16z dissects how Revolut, with its 2025 annual report, has built a company growing at a 76% CAGR in mature financial markets. The numbers alone are astonishing, but what’s more worth reading is the growth logic behind them: not earning from interest 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:

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 six business segments, with no single category exceeding 22%

11 product lines each generating over £100 million

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

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

More importantly, we believe Revolut still has ample room for customer growth and monetization in existing markets. Not to mention potential new markets it has yet to tap—Revolut has just applied for a US banking license, showing 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 is already 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 income growth is astonishing.

Alongside NU (Nubank), 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—76% CAGR—making it one of the fastest companies to break the $1 billion 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 any of Robinhood, Affirm, SoFi, Adyen, Wise, or Chime. Now, its revenue is 33% to nearly 3 times higher than any of these well-known consumer fintechs.

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

A key difference 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 5% bank fees.

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), roughly 1 in 3 new accounts chooses Revolut:

Chart: Survey conducted in key markets, using a representative sample of adults, respondents indicated where they opened accounts and when

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

One in five working-age Europeans uses Revolut. Its appeal across the Eurozone demonstrates the company’s rapid product iteration and execution—truly impressive.

Revolut offers a full suite of personal and business banking features, driving growth across diverse European markets. Importantly, its product suite increasingly attracts users in the Eurozone who are not initially motivated by foreign exchange value propositions. We could say Revolut’s platform is “comprehensive,” but that underestimates its ongoing innovation.

It’s not just about quantity of features and products—execution quality matters too. 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 in perspective: JPMorgan— the world’s largest bank outside China—has about 85 million consumer clients (over 70 million of whom are considered “digitally active”).

While JPM’s total AUM vastly exceeds Revolut’s, from a pure user coverage standpoint, 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 is even greater than this disclosure suggests, as each revenue stream may include multiple sub-products (e.g., wealth 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—one reason Revolut can achieve high ROE (discussed below).

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

Chart: ARPU defined as revenue per product line / 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.

The importance of diversification lies in supporting sustained compound growth and building resilience. Some product lines may explode in a given year, while others face headwinds (e.g., last year’s interest rate declines). But overall, adding new products and capturing more wallet share in core businesses can still drive strong ARPU growth.

3. Top-tier efficiency

Revolut demonstrates rapid user growth, strong product iteration, and diversified revenue—efficiency is also proven.

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 analyst forecasts 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 rare position—among companies with revenue over $1 billion, achieving a Rule of 75% is exceedingly uncommon.

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, which will compound as scale continues.

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

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

This efficiency has enabled Revolut to achieve one of the highest ROEs among scale fintechs—and it’s still improving. We’ve previously emphasized ROE’s importance for bank valuation; Revolut exemplifies scale efficiency.

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

Source: Public financial data from CapIQ

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

Few companies can grow so capital-efficiently.

4. Ample growth potential: ARPU × users

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

More users to acquire

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

Revolut still has a lot of potential users to reach.

Moreover, the current user profile suggests that future users will be different from today’s. Unlikely to be the same demographic, Revolut’s younger, more digital-native users are likely to represent the future majority of the population.

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

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

As Revolut continues to acquire a large share of first-time account openings (and convinces older demographics that banking can be enjoyable), its market share should keep growing.

Importantly, our research shows that about 25% of users under 35 consider Revolut their primary account. Just this fact alone will have a profound impact on Europe’s future banking landscape as this cohort ages.

ARPU has more room to grow

Another growth dimension for ARPU, with even greater potential.

The transfer of wallet share in financial services typically takes a decade or more, not just a year. Revolut continues to earn user trust: primary account users (by 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 indicates that mature customer relationships in traditional banks can push their “primary account” share above 60%.

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

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

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

As noted, 76% of Revolut’s revenue is from fees, compared to about 30% for mature banks;

By the end of 2025, Revolut’s loan-to-deposit ratio (LDR) is only about 6%, whereas mature banks typically range from 70-90% (or about 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 ceiling, Revolut has ample opportunity to significantly expand ARPU through asset-liability management and better loan products. For comparison, simple estimates suggest that Barclay’s UK consumer and business banking ARPU is about £435—roughly six times Revolut’s current level.

Below is Revolut’s current position 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 and outward—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 2025 figures are important not only because they are impressive 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 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 annual report, we see the focus shifting 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.