Agency.pizza logo
Agency.pizza logo
From Side Project to Europe’s Most Valuable Startup: The Klarna Story
Created by Agency Pizza TeamAgency Pizza Team

From Side Project to Europe’s Most Valuable Startup: The Klarna Story

Discover how three Swedish students turned a failed competition entry into Klarna—a fintech giant valued at billions. Explore the journey, the trade-offs of venture capital, and the power of persistence.

#Startups#Business
19.02.202532084706:22

From Side Project to Europe’s Most Valuable Startup: The Klarna Story

Introduction

Sometimes, the biggest success stories start with failure. In 2005, three students at the Stockholm School of Economics submitted an idea to a university entrepreneurship competition: make online shopping safer and more convenient. Their concept? A payment solution that allowed customers to pay after receiving products, removing the fear of being scammed online.

The result? Their project ranked near the bottom. Most people would’ve packed up and moved on—but not Sebastian Siemiatkowski, Niklas Adalberth, and Victor Jacobsson. Instead, they took the feedback, ignored the naysayers, and launched a company anyway: Klarna.

Nearly two decades later, Klarna became Europe’s most valuable startup, peaking at a staggering $45.6 billion valuation—only to later face the humbling reality of market corrections. Their journey is packed with lessons about persistence, market timing, and the double-edged sword of venture capital.


Early Days: From Rejection to Relentless Execution

In the mid-2000s, online shopping was booming, but buyers were wary. Credit card fraud was rampant, and few consumers trusted unfamiliar e-commerce sites. Meanwhile, sellers faced another headache—getting paid quickly without dealing with chargebacks or fraud.

Klarna’s solution was simple but brilliant:

  1. Customers could place orders and pay only after receiving their items.
  2. Klarna would pay merchants upfront, taking on the credit risk.
  3. If buyers didn’t pay, Klarna handled the collections.

🛡️ Why it worked: Buyers felt safer making purchases, while sellers benefited from faster, guaranteed payouts.

✨ Early Features That Stood Out

  • 🗂️ Klarna Account: Consolidated purchases with the ability to pay once at month’s end.
  • 💳 BNPL (Buy Now, Pay Later): Klarna’s signature feature, offering installment plans without traditional credit checks.
  • 🔒 Advanced Risk Management: Quick credit assessments to protect both buyers and sellers.

🚶 Imagine this: You find a new online store selling those sneakers you’ve been eyeing. Usually, you’d hesitate—what if it’s a scam? With Klarna, you can order without fear. Try first, pay later.


The Turning Point: Investment, Hustle, and Hard Lessons

Despite their early setback in the competition, the trio didn’t stop pitching. Investor after investor passed—until they met Jane Walerud, an entrepreneur who saw the potential no one else did. Her investment and network gave Klarna the resources to build a functional prototype.

Just two years later, Klarna was everywhere in Scandinavian e-commerce.

💡 Lesson: You don’t need everyone to believe in you—just the right person at the right time.

But success wasn’t linear. There were late nights, technical failures, and the constant pressure of being the company handling people’s money. One mistake could’ve tanked user trust.


Klarna’s Growth Timeline: Scaling the Impossible

Klarna’s expansion wasn’t luck—it was calculated risk, bold decisions, and the willingness to move fast in competitive markets.

Year Milestone Impact
2007 Received initial angel investment Enabled product development and first hires
2010 Entered Germany & the Netherlands Expanded beyond Scandinavia, diversifying user base
2015 Launched in the U.S. & Israel (via acquisitions) U.S. market opened, partnership with Macy’s fueled growth
2019 Raised $460M, valuation reached $5.5B Cemented status as Europe’s top fintech startup
2021 Valuation peaked at $45.6B Klarna became a global BNPL leader
2024 Filed for IPO, valuation corrected to $6.7B Market cooled, raising questions about long-term profitability

📊 Notice the pattern: Growth was rapid but not without corrections. Highs and lows are part of every startup’s journey.


The Cost of Venture Capital: Growth vs. Ownership

Raising money accelerates growth—but it comes at a price. Klarna’s founders saw their stakes shrink with each funding round:

Founder Initial Ownership (2005) Ownership in 2024
Sebastian Siemiatkowski 33.3% 8%
Niklas Adalberth 33.3% 10%
Victor Jacobsson 33.3% 0.4%

💸 What would you choose? Own a bigger slice of a small pie, or a smaller slice of a billion-dollar one?

The decision to take on venture capital is complex. It brings resources and connections—but also pressure, dilution, and expectations that can overshadow long-term vision.


Key Lessons for Aspiring Founders

Building a startup like Klarna isn’t about luck—it’s about tenacity, timing, and making hard calls. Here’s what their journey teaches us:

🌱 Rejection isn’t the end. Klarna flopped in a university competition—but flourished in the real world.
🔑 Focus on real problems. Payment security wasn’t sexy—but it was urgent. Solve what people actually struggle with.
Timing matters. They launched BNPL before it was trendy, riding a wave of changing consumer habits.
📉 Funding is a double-edged sword. Yes, you scale faster—but at what cost? Klarna’s founders now own fractions of their original stakes.
🤝 Find investors who add more than money. Strategic guidance and introductions often matter more than capital alone.

📝 Real-world takeaway: Building something people use daily—even if it’s “boring” like payments—can be your golden ticket.


Conclusion: What Klarna’s Story Means for You

Klarna’s journey shows that success doesn’t require a perfect start—it demands resilience, problem-solving, and bold choices. Would they be where they are today if they gave up after their first rejection? Probably not.

But their story is also a cautionary tale: fast growth and high valuations aren’t everything. Ownership dilution, market volatility, and scaling pressures are real. Choose your path wisely.

So, the next time someone dismisses your idea, remember: Klarna was once a bottom-ranked project too. The difference is, they kept going.

Ready to build your own success story?
agency.pizza helps founders validate ideas, craft MVPs, and scale without losing control.
Let’s make it happen.

let’s talk about your next project