Y Combinator portfolio Fintech companies
The most prolific seed accelerator in the world, batch class twice a year. Filtered to companies in Fintech.
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- InvestorY Combinator
- IndustryFintech
- Matches374
Built from a search like: “Y Combinator-backed Fintech companies”
Ranked by current headcount across Y Combinator-backed Fintech companies. Refreshed daily.
- 1Y Combinator· United States
Y Combinator is the leading startup accelerator for entrepreneurs. Since 2005, YC has invested in over 5,400 companies, including Airbnb, Dropbox, Stripe, Reddit, Instacart, DoorDash, and Coinbase. Today, YC has built the most powerful startup community in the world alongside the products and programs to support founders for the life of their company.
- 8.9k employees
- Founded 2005
- 2Coinbase· First, West Virginia, United States
Coinbase (NASDAQ: COIN) is on a mission to increase economic freedom in the world. The most trusted crypto platform, Coinbase stores more digital assets than any other company and is building the everything exchange — one place to access crypto, equities, derivatives, prediction markets, and more. Coinbase serves consumers through its suite of financial apps, institutions through Coinbase Prime, and developers through the Coinbase Developer Platform. Every experience runs on Coinbase's full-stack platform powering the future of finance: secure custody, deep exchange liquidity, stablecoin infrastructure, and global settlement rails — all built on a decade-plus foundation of security and compliance.
- Post-IPO debt
- 7.3k employees
- Founded 2012
- 3Monzo· London, England, United Kingdom
Time is money. Make the most out of both with Monzo. Britain's favourite bank.
- Secondary
- 5.8k employees
- Founded 2015
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- 4Cowrywise· Ikeja, Lagos State, Nigeria
We are Cowrywise. One of Nigeria’s leading fintech companies - an investment company and wealth manager to a thriving generation of young Nigerians.From the very beginning, we’ve put building and protecting wealth at the heart of everything we do. Equipping you with the tools you need to build wealth at your own pace, in ways that won’t take the “style” from your lifestyle.- We are licensed by the Securities and Exchange Commission- Backed by venture capital firms and investors including Quona Capital, Y Combinator, Venture Souq, SHL Capital, and Kairos 50 Ventures- Voted one of the Top 10 Startups in Nigeria in 2022- Ranked among the best apps made in Nigeria in 2022- And the first Nigerian company to be accepted into the Catalyst Fund program, backed by JP Morgan and UKAIDWe are on a mission to make investing as simple as sending a tweet and to redistribute access to wealth so that every single Nigerian regardless of tribe, religion, or socio-economic class has a fighting chance and a shot at a future where wealth is not only for the 1%. A future where we see the ‘WE’ in wealth.Through the power of finance and technology, we are helping our customers build wealth one dime at a time, and moving them beyond the potential they see today, to the untapped financial possibilities they deserve tomorrow.
- Seed
- 5.6k employees
- Founded 2017
- 5Wave Mobile Money· Arrondissement de Mbadakhoune, Kaolack Region, Senegal
We're making Africa the first cashless continent.In 2017, nearly 60% of adults in sub-Saharan Africa had no bank account. That's for good reason—the fees are too high, the closest branch can be miles away, and nobody takes cards. Without access to financial institutions, people are forced to keep their savings under the mattress. Small business owners rely on lenders who charge extortionate rates. Parents spend hours waiting in line to pay school fees in cash.We're solving this by building financial services that just work: no account fees, instantly available, and accepted everywhere. In places where electricity, water and roads don't always work, you can still send money with Wave. In November 2017, we launched a mobile app in Senegal for cash deposit, withdrawal, and peer-to-peer and business payments. In 2019, we expanded to Cote D'Ivoire. Now, we have millions of users across 9 countries and are growing fast.Our goal is to drive financial inclusion and make Africa the first cashless continent.
- Debt
- 5.4k employees
- Founded 2017
Y Combinator’s Fintech portfolio
The list above ranks Y Combinator-backed Fintech companies by current headcount, drawn from public LinkedIn and Crunchbase records. 374 matching companies in Refolk’s index give you a quick read on where Y Combinator has gone deepest in the Fintech space.
Y Combinator’s Fintech bets tend to share a thesis. The engineers, ML researchers, and founders inside these companies are often building the same primitives - and they show up in Fintech talent pools across the next decade.
Refolk converts this list into a live search. Ask for “Y Combinator Fintech companies hiring senior engineers” or “founders of Y Combinator-backed Fintech companies” and Refolk returns a fresh ranked shortlist.
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Last refreshed: Wed, 05 Aug 2026 18:38:28 GMT
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How is this ranking built?
The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.
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- Staff backend engineers in NYC who shipped Rust in production
- Series A fintechs in SF under 50 people, growing headcount this year
- Maintainers of fast-growing Rust web frameworks on GitHub
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