Updated:
Oui Financial
Oui Financial was founded in 2018 in San Francisco by CEO Guillaume Decalf, a former consultant and technology operator at Amazon and Fitbit.
Oui Financial
Oui Financial was founded in 2018 in San Francisco by CEO Guillaume Decalf, a former consultant and technology operator at Amazon and Fitbit. Decalf earned his Series 65 license and the cross-border GFP Designation after identifying the acute planning needs of French expatriates navigating US healthcare, education savings, and retirement accounts. The firm operates as a fee-only registered investment advisor, explicitly stating it does not sell financial products or receive commissions. The firm deploys capital into equity and fixed-income portfolios constructed primarily around socially responsible funds. Its advisory scope spans retirement accounts — including IRAs, Roth IRAs, 401(k)s, 403(b)s, and 529 plans — as well as stock option strategies and cross-border tax optimization between the United States and France. Oui Financial targets individuals and families at all life stages, from new arrivals to long-term US residents preparing for return to Europe. The geographic footprint is explicitly bilateral, covering US-domiciled assets and French regulatory contexts. Decalf is supported by a small advisory team. Financial planner Nicolas Benit joined in 2024 after a decade in wealth management at Société Générale and Banque Courtois in France. Smara Savoy, a Swiss-born HR executive turned financial coach, also joined in late 2024 after earning her Series 65 license — expanding the firm's capacity to serve cross-border households. No additional offices or affiliated vehicles are disclosed. The structure functions as a boutique multi-family office — though Oui Financial does not self-identify as one — distinguished by its non-commissioned, transparent advisory model and a narrow specialization in French-American tax and retirement planning. The firm's succession posture and governance architecture are not publicly outlined, but its mission remains tethered to Decalf's original operating insight from his tech career.
General information
Firm type
Multi Family Office
Year founded
2018
AUM
Undisclosed
Location
Region
North America
Country
United States
City
San Francisco
Corporate office
San Francisco, CA, United States
Principals
Guillaume Decalf
CEO
Smara Savoy
French American Financial Planner and Investment Advisor
Nicolas Benit
Financial Planner
Sector focus
Frequently asked questions
Who runs investment decisions at Oui Financial?
CEO Guillaume Decalf leads investment strategy and financial planning. He holds the Series 65 license and the GFP Designation for cross-border financial planning. Client portfolios are constructed internally using direct advisory relationships, with a stated prioritization of socially responsible funds.
How does Oui Financial source clients?
Client acquisition appears driven by word-of-mouth within the French expatriate community and Decalf's own visibility. The firm's website offers a free initial consultation and a bilingual newsletter. No formal marketing partnerships or institutional referral networks are referenced.
Is Oui Financial structured as a single family office or does it operate more like a wealth manager?
It is a registered investment advisor (RIA) operating as a small advisory firm serving multiple families. The firm is not a single family office. It functions as a fee-only planner for French-American households rather than a private investment platform for a single source of wealth.
Does Oui Financial participate in fund commitments or only direct portfolios?
The firm constructs direct portfolios of funds, primarily equity and fixed-income products with a focus on socially responsible strategies. There is no evidence of direct private company investments, venture capital commitments, or private equity fund participations.
Which sectors does Oui Financial explicitly avoid?
The firm openly prioritizes socially responsible investments, implying exclusion of sectors that conflict with ESG criteria. No formal negative screens are listed, but the firm's commitment to sustainable funds suggests avoidance of fossil fuel extraction, weapons manufacturing, and similar industries.
Does Oui Financial maintain philanthropic structures, and how are they separated?
No philanthropic foundation or donor-advised fund is disclosed in association with Oui Financial. The firm's services focus on personal financial planning, retirement, and cross-border tax optimization without a dedicated charitable giving vehicle.
What is Oui Financial's known posture on co-investments alongside external GPs?
Oui Financial does not offer co-investment opportunities. It acts purely as an advisor on client-directed portfolios using publicly available funds. The firm explicitly states it receives no commissions and sells no financial products, reinforcing a model of arms-length advisory.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
Need institutional-grade insight on family offices?
Altss delivers:
Prefer a guided tour?
We’ll walk you through: