Fintech isn’t one thing.

When people say “fintech” they might mean

These are wildly different businesses with wildly different economics.

Understanding the categories matters because the winning strategies, unit economics, and regulatory regimes differ dramatically. What works in payments doesn’t work in lending. What scales in B2B doesn’t scale in consumer.

Nearly all money moves as structured text files.

Payment companies make those files move faster, cheaper, and with less friction. They handle links to banks, central banks, and card networks.

Here’s a drive by of some of the big names you should know to sound like a Fintech OG.

The players:

(There are many, many many others, this is just a starter pack).

Why it matters: Payments is the foundational layer. Every other fintech category eventually needs to move money. The company that owns the payment moment owns the customer relationship.

Where it’s going: The checkout page is dead. AI agents will increasingly handle purchases autonomously, which is why Stripe partnered with OpenAI to build the Agent Commerce Protocol. Stablecoins are also reshaping cross-border - Western Union and Wise are both adding stablecoin rails. That’s your happy hour chat sorted.

Lending is where fintech meets financial services’ oldest business: taking credit risk.

The segments:

The key players: Klarna just IPO’d at $15 billion after its “AI company that does payments” rebrand. Affirm has proven staying power despite rate sensitivity. In SMB, the action has shifted to embedded lenders working with the CFO stack players.

Why it matters: Credit creation is how banks make most of their money. Fintech lending challenges whether you need a bank charter to do it - and whether AI can underwrite better than FICO scores from 1989.

Where it’s going: The future of underwriting involves generative AI and transformer models processing transaction data in real-time. Using more data and AI agents to automate those complex workflows that bank and lender staff had to do. In a few years, most consumer lending will look more like BNPL and less like credit cards.

Neobanks asked: what if we designed a bank as if the smartphone existed from day one?

The mind share leaders:

(WeBank in China dwarfs most of these companies; pay attention to APAC and never let it be a blind spot.)

The pattern: These companies start with a debit card and checking account - the lowest margin products in banking. Then they layer on premium subscriptions, lending, savings, and increasingly, everything else.

Why it matters: Banks are not disrupted. They’re marginalized. Neobanks didn’t replace JP Morgan. They took the customers JP Morgan never wanted to serve profitably.

Wealthtech democratized investing. For better and worse.

The mind share leaders:

Where it’s going: Prediction markets are having a moment - Kalshi is raising at $2 billion and proving more accurate than Fed Funds futures on certain events. The next frontier is AI-powered financial advice that actually understands your full financial picture.

Insurtech promised to reinvent a $6 trillion industry. It’s been… complicated.

The poster child: Lemonade launched with AI claims processing and became the fastest IPO in insurtech history. Then it learned that insurance is actually hard - loss ratios matter, and moving fast can mean breaking things you shouldn’t break.

The pivot: Embedded insurance is where the action moved. Instead of building consumer insurance brands, companies like Cover Genius and Bolttech enable any platform to offer insurance at point of sale.

Why it matters: The real innovation isn’t the policy - it’s the distribution. Embedded insurance will be a $500 billion market because it meets customers where they are.

The unsexy category that prints money.

The CFO stack:

These aren’t just corporate card companies - they’re building the operating system for how modern companies manage money. Treasury management, AP/AR automation, and expense management are all unified.

The thesis: Incumbent solutions are poor, and new companies demand solutions that are 100x more efficient. A startup shouldn’t need a five-person finance team to manage expenses, pay vendors, and track cash flow.

Where it’s going: AI is eating the CFO stack. Ramp’s AI already categorizes expenses and flags anomalies. The natural endpoint is an AI CFO agent that handles routine financial operations autonomously.

Embedded finance is fintech’s distribution hack: let every company become a fintech company.

The infrastructure: Banking-as-a-Service (BaaS) providers like Unit, Treasury Prime, and Stripe enable any company to offer bank accounts, cards, and lending. The model: partner with a sponsor bank, provide APIs, let brands build financial products under their own umbrella.

The reality check: The sponsor bank model faced an existential crisis in 2024-2025 as consent orders multiplied. We’re seeing consolidation and increased scrutiny.

Where it’s going: The great re-aggregation of banking is happening. Some embedded finance providers will get charters themselves. Others will consolidate with established players. The survivors will be those who nail compliance while maintaining developer experience.

Let’s be clear: crypto is a subset of fintech, not a replacement for it.

The shift: The death of “crypto” and the beginning of onchain finance. Stablecoins are a new platform - not just for payments, but for programmable money, onchain FX, and tokenized assets. This isn’t about Bitcoin maximalism; it’s about blockchain as financial infrastructure.

What matters now: Stablecoins processed over $10 trillion in 2024. Circle is trying to be SWIFT. USDC and USDT are legitimate payment rails. Congress accidentally created a federal payments charter with stablecoin legislation.

The honest view: DeFi proved interesting technology with questionable use cases and regulatory nightmares. The parts that survive are the parts that connect to real financial services: stablecoin payments, tokenized treasuries, onchain identity.