Part One
Where You Are
- You Cannot Fix What You Hide
- Displaying Wealth Consumes It
- A Number Alone Will Lie to You
A book by Devon Coombs, CPA, MBA
The 10 Laws of Finance
A Real-World Education in Money, Business, and Freedom
My first financial statement was written in a notebook while I was living in my car. Years later, the same principles helped me work through billion-dollar transactions. This book connects those worlds—and puts the reasoning within reach.
By an Assistant Teaching Professor of Finance at Santa Clara University and former Google Cloud finance leader. Published September 1, 2026.
“Devon Coombs has crafted a masterful bridge between the technical rigor of finance and the personal habits required for true freedom. This is more than a textbook. It is a practical and achievable roadmap for anyone seeking to position their financial reality with an honest and intentional life.”
Why this book
Money, business, and the life you want to build.
Financial decisions do not arrive neatly labeled by textbook chapter. They arrive as a job offer, a new venture, a borrowing decision, or a business that looks successful but keeps running short of cash.
The ten laws provide a way to look at those decisions: face the numbers, question the assumptions, understand the tradeoffs, and connect today’s choices to the future they create.
Read the author’s story
Inside the book
Ten laws. Three parts. A way to think.
Move from an honest view of your current position to the future you want, then examine the choices that connect the two.
Part Two
Where You’re Going
- Accuracy Emerges from Error
- Present Decisions Create Exponential Future Impact
- Potential Is a Story; Cash Flow Is Reality
Part Three
How You Get There
- The Only Worthwhile Risks Command Incremental Expected Rewards
- Concentration Creates Unnecessary Fragility
- Every “Yes” Has a Casualty
- Success Hardens into Constraints
Reader perspectives
A bridge between the personal and the professional.
“This book is an excellent bridge between personal finance, corporate finance, and the practical application of these principles to everyday life. It is a recommended read for anyone looking to get serious about their future, finances, and decision-making, well beyond the surface-level advice offered by most books in the genre.”
“As a founder working at the intersection of accounting and AI, I used to see accounting and finance as something procedural and often treated as a chore. This book completely changed that perspective. Devon Coombs shows that finance is about revealing the truth through numbers, giving a clear picture of where you stand, and helping you make better decisions about what comes next. More than just concepts or metrics, it challenges you to think about your true end goals. A thoughtful and refreshing take that goes far beyond traditional finance.”
Put the ideas to work
Keep learning beyond the page.
Reader resources
Find the tools, references, and supporting materials collected for the book.
Open the resource indexInstructor & discussion guides
Bring the laws into a course, a reading group, or a structured conversation.
Explore the guidesFree interactive courses
Build on the book with deeper practice in corporate finance, real estate, entrepreneurship, and applied AI.
Visit the academyThe book is out now
The 10 Laws of Finance is out now on Amazon in Kindle and paperback, released September 1, 2026.
Get it on AmazonStart with an honest look at the numbers.
Read The 10 Laws of Finance and build a clearer way to think about money, business, and the decisions ahead.