Guillaume Decalf
Hourly and ongoing financial planning and investment management
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Serving Clients Nationwide
Hourly and ongoing financial planning and investment management
Areas of Focus
- Equity Compensation Options
- Estate Planning
- Financial Life Planning
- International and Cross-border Planning
- Investment Management
- Retirement Planning
- Socially Responsible Investing
- Tax-Efficient Planning
- Taxes
About Guillaume Decalf
I am the Founder and CEO of We Financial Group, an independent, fee-only wealth management organization built on a simple belief: clients receive better advice when it’s delivered by specialists.Financial planning has become increasingly complex. Retirement planning, taxes, investments, equity compensation, estate planning, business ownership, and international financial issues all require different expertise. Rather than building a firm that tries to be everything to everyone, I founded We Financial Group as a collection of specialized advisory brands, each focused on serving a distinct client community while sharing the same fiduciary standard, planning philosophy, and commitment to exceptional client service.
Today, We Financial Group includes:
Oui Financial, specializing in comprehensive financial planning for French and French-American individuals and families living in the United States.
We Financial Core, providing comprehensive wealth management for individuals, families, professionals, and business owners.
We Financial Focus, delivering targeted planning and advice for clients facing important financial decisions and life transitions.
We Financial Impact, helping investors incorporate environmental, social, and governance (ESG) and impact investing principles into their long-term financial plans.
We Financial for Therapists, offering financial planning specifically designed for therapists, psychologists, and other mental health professionals.
Before entering the financial industry, I spent more than a decade improving business operations and decision-making. After earning my MBA in France, I worked as a management consultant before moving to San Francisco in 2010, where I joined companies including Amazon and Fitbit.
My own experience adapting to the U.S. financial system changed the direction of my career. Navigating retirement accounts, taxes, healthcare, education planning, investing, and estate planning made me realize how overwhelming financial decisions can be, especially when they span different countries and financial systems. As I helped friends and colleagues navigate similar challenges, I discovered a passion for helping others make informed financial decisions and ultimately founded the first advisory practice within what would become We Financial Group.
Today, I continue to work directly with clients, particularly those with complex planning needs, while leading the continued growth of We Financial Group and expanding its specialized advisory brands.
I am a Series 65 Investment Adviser Representative, a GFP Fellow specializing in cross-border financial planning, and hold the RIADAC Certificate in Blockchain and Digital Assets.
Outside of work, I enjoy spending time with my family and competing in endurance running events. Endurance sports have reinforced many of the same principles I apply to financial planning: discipline, preparation, patience, and a long-term perspective.
Professional Designations
- Certificate in Blockchain and Digital Assets
- GFP Fellow
Affiliations
- Global Financial Planning Institute
Primary Location
San Francisco, CA 94108
Meeting Options
- Video Conference
- In-Person
- Phone
- Webinars
Compensation Methods
- Fee Only
- Flat Fee
- Hourly Rate
- Percentage of Assets Managed
What to expect in the first meeting
Click the 'Book Intro Call' button above and complete the short survey to qualify for a complementary financial strategy session. We'll sit down to discuss your situation, your goals, and any concerns you have about your finances in the U.S. and France, and I'll answer your questions so we can determine the best way to move forward. I look forward to speaking with you.Offers Investment Management
Yes
About We Financial
We Financial Group is an independent, SEC-registered, fee-only wealth management organization dedicated to helping clients make confident financial decisions throughout every stage of life.Unlike traditional advisory firms that operate under a single brand, We Financial Group brings together specialized advisory practices that serve different client communities while sharing the same planning philosophy and fiduciary commitment.
Whether a client is planning for retirement, managing equity compensation, growing a business, preparing for college expenses, coordinating estate planning, navigating cross-border financial issues, or aligning investments with personal values, our goal is to provide specialized expertise within a coordinated long-term financial plan.
Across every brand, our mission remains the same: simplify financial complexity, provide objective advice, and help clients build lasting financial confidence.
As fiduciaries, we never sell financial products or receive commissions. Every recommendation is made solely in our clients’ best interests.
Who We Serve
We work with professionals, entrepreneurs, families, and investors who want to make smarter financial decisions without the complexity. Whether you're building wealth, planning for retirement, managing stock compensation, saving for your children's education, or preparing your estate, we provide clear, personalized guidance tailored to your goals.
Our Services
Depending on your needs, our advisors provide guidance in areas including:
Comprehensive financial planning
Investment management
Retirement planning
Tax-efficient investing
Equity compensation planning (RSUs, stock options, and ESPPs)
Estate planning coordination
Education planning
Cash flow and budgeting
Business owner planning
Cross-border financial planning
Sustainable and impact investing
Our Philosophy
Financial planning is about far more than investment performance.
Every important financial decision is connected. Investments affect taxes. Taxes influence retirement. Estate planning impacts future generations. Business decisions shape personal wealth.
Our role is to help clients see the bigger picture, understand their options, and make informed decisions with confidence.
By combining specialized expertise with a collaborative planning approach, we help clients build financial strategies that are coordinated, objective, and designed to evolve throughout every stage of life.
Education
ESCEM International Business School, Master of Business Administration (M.B.A.), Business | Université du Littoral Côte d'Opale, Two-year degree, Law
Languages
- English
- French
Hobbies and Interests
- Family
- Running
SEC Lookup
View DisclosureWho We Serve
- Americans Living Abroad
- Attorneys
- BIPOC
- Blended Family
- Business Owners
- Corporate Executives
- Couples
- Creative Professionals
- Crypto Investors
- Data Scientists
- Dentists
- Disabled Community
- Divorce
- Dual Income Family
- Engineers
- Entrepreneurs
- Expats
- Families
- Federal Law Enforcement
- Financial Independence Retire Early (FIRE)
- Foreign-Born Individuals
- Gen X
- Gen Y / Millennials
- Gen Z
- Government Employees
- Healthcare Professionals
- High Net Worth
- Immigrants
- Individuals
- Intergenerational Families
- Investors
- LGBTQ
- Military
- Newly Engaged / Newlywed
- Non-Traditional Clients
- Technology Professionals
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