UK $40 Billion Fintech Checkout Founder, Switzerland Citizen & Billionaire with $8 Billion Fortune Guillaume Pousaz (Age 43) Changed Residency from UK London to Monaco, Founded Checkout in 2009 as Opus Payments in Singapore & Renamed to Checkout.com in 2012, Raised $1 Billion in 2022 & Peak Valuation at $40 Billion in 2022, Founded Pousaz Philanthropies in 2022
29th May 2025 | Hong Kong
UK $40 billion fintech Checkout founder, Switzerland citizen & billionaire with $8 billion fortune Guillaume Pousaz (Age 43) has been reported to have changed his residency from UK London to Monaco. Guillaume Pousaz founded Checkout in 2009 as Opus Payments in Singapore, and renamed to Checkout.com in 2012. Checkout raised $1 billion in 2022, with peak valuation at $40 billion in 2022. Guillaume Pousaz founded Pousaz Philanthropies in 2022. Profile – Guillaume founded Checkout.com in 2012 with a mission to simplify online payment processes for both merchants and their customers. Starting to code from the early age of eight, Guillaume has always been driven by curiosity, a love for art and math, and solving real-world problems. This obsession has led Checkout.com to become a key player in digital payments, delivering high-performance payment solutions to thousands of enterprise merchants globally, processing billions of transactions per year with a team of more than 1900 people in 19 countries. Living in London with his family, Guillaume balances his tech career with being an avid endurance athlete and engaging in philanthropy. He is deeply committed to improving educational access and nurturing new talent and is an active mentor of the Endeavour network to help support future entrepreneurs.
“ UK $40 Billion Fintech Checkout Founder, Switzerland Citizen & Billionaire with $8 Billion Fortune Guillaume Pousaz (Age 43) Changed Residency from UK London to Monaco, Founded Checkout in 2009 as Opus Payments in Singapore & Renamed to Checkout.com in 2012, Raised $1 Billion in 2022 & Peak Valuation at $40 Billion in 2022, Founded Pousaz Philanthropies in 2022 “
UK $40 Billion Fintech Checkout Founder, Switzerland Citizen & Billionaire with $8 Billion Fortune Guillaume Pousaz (Age 43) Changed Residency from UK London to Monaco, Founded Checkout in 2009 as Opus Payments in Singapore & Renamed to Checkout.com in 2012, Raised $1 Billion in 2022 & Peak Valuation at $40 Billion in 2022, Founded Pousaz Philanthropies in 2022

Sign Up / Register
Caproasia Users
- Manage $20 million to $3 billion of assets
- Invest $3 million to $300 million
- Advise institutions, billionaires, UHNWs & HNWs
Caproasia Platforms | 11,000 Investors & Advisors
- Caproasia.com
- Caproasia Access
- Caproasia Events
- The Financial Centre | Find Services
- Membership
- Family Office Circle
- Professional Investor Circle
- Investor Relations Network
Monthly Roundtable & Networking
Family Office Programs
The 2025 Investment Day
- March - Hong Kong
- March - Singapore
- July - Hong Kong
- July - Singapore
- Sept- Hong Kong
- Sept - Singapore
- Oct- Hong Kong
- Nov - Singapore
- Visit: The Investment Day | Register: Click here
Caproasia Summits
- The Institutional Investor Summit
- The Investment / Alternatives Summit
- The Private Wealth Summit
- The Family Office Summit
- The CEO & Entrepreneur Summit
- The Capital Markets Summit
- The ESG / Sustainable Investment Summit