Why do profitable businesses still run out of cash and struggle to make payroll every single month?

You've watched the sales grow, the revenue climb, and the profit margin look healthy on paper—yet somehow there's never enough money in the bank when the bills come due. The problem isn't your work ethic or your intelligence. It's that nobody taught you the difference between profit and cash, or gave you a system that makes sound financial behavior automatic.

In Cash Flow First, operations expert Brennan Renvik reveals a simple five-account cash management system that flips conventional thinking on its head. Instead of hoping profit appears after expenses, you claim profit, taxes, and owner's pay first—then force operations to fit what remains. Built on real behavioral science and illustrated through unforgettable business turnarounds, this book gives you back control.



Inside, you'll discover:



- Why profitable companies go broke—and how to spot a cash crisis before it hits

- The five-account system that makes good money habits automatic through structure, not willpower

- How to pay yourself properly without sinking the business or drowning in guilt

- The forced scarcity method that exposes hidden waste and tames runaway operating expenses

- How to handle debt while still taking profit, and scale growth without bleeding cash

- Ways to adapt the system for solopreneurs, agencies, retail, and service firms

Stop letting your business eat you alive—put cash flow first and finally take control of your financial future.



Brennan Renvik is an American consultant and former operations executive specializing in operational efficiency, leadership, and the personal productivity of technology-company leaders. He earned an engineering degree from a leading American university and an MBA from one of the top U.S. business schools. Over twelve years in the SaaS and fintech industries, he rose from head of operations to COO, leading one B2B SaaS company from $7M to $90M in ARR through a successful exit, then serving as COO of a fintech unicorn with fifteen hundred people across ten time zones. That experience became the foundation of his methods, which emphasize turning intention into decisive, owner-focused action. Today Renvik runs his own consulting practice for the CEOs and COOs of scale-up companies, leads cohort programs for operations directors, and provides one-on-one coaching for senior executives on leadership and personal effectiveness.



1. Why Profitable Businesses Still Go Broke

2. The Human Brain vs. Your Bank Account

3. Building Your Five-Account Cash Flow System

4. Setting Your Target Allocation Percentages

5. The First 30 Days: A Gentle Rollout for Nervous Owners

6. Reading Your Real Numbers (Not the Ones Your Accountant Shows You)

7. Paying Yourself Without Sinking the Ship

8. Taming Operating Expenses Through Forced Scarcity

9. The Quarterly Profit Ritual

10. Handling Debt While Still Taking Profit

11. Adapting the System for Solopreneurs and Freelancers

12. Adapting the System for Agencies, Retail, and Service Firms

13. When Growth Threatens Profit: Scaling Without Bleeding Cash

14. Case Studies: Three Businesses That Stopped Eating Their Owners

15. Common Breakdowns and How to Recover Mid-Quarter

16. Building a Profit-Minded Team and Company Culture

17. The Ten-Year Horizon: Wealth Beyond the Business



Finally know exactly where your money goes