Unit economics founders must obsess over

Most founders think if their company is profitable on paper, they're safe. But here's the truth I learned the hard way: businesses don't fail because they're unprofitable. They fail because they run out of cash.

I had a really good run for about 6-7 years at Foundr before I ever faced a serious cash crunch. And when it hit, it was terrifying — that feeling when you don't know if you're going to make payroll is something I'll never forget. You can have strong revenue, good margins, be growing, and technically be profitable — but if the timing of when cash comes in and goes out isn't managed correctly, you can find yourself in serious trouble.

In this episode, I break down why cash flow is the number one thing founders need to obsess over, and the practical moves you can make to manage it better before it becomes a crisis.

Here's what you'll take away: • Why revenue is exciting but cash flow is what keeps your business alive — the timing gap can suffocate you • How e-commerce founders experience cash pressure differently: inventory upfront, ads before sales, seasonality cycles • Why scaling too aggressively with ads can grow your revenue while shrinking your bank balance • The unit economics you need to obsess over: contribution margin, payback periods, and CAC • Why subscription models and high-margin products (70-80%+) give you breathing room to scale profitably • Practical cash flow moves: negotiate payment terms, cut software bloat, increase AOV, optimize conversion rates • The cash buffer rule: maintain 2-3 months of operating costs in reserves and secure lines of credit before you need them • Why you should always plan for worst-case scenarios, not best-case forecasts

If you've ever felt stressed even when your business looks healthy from the outside, or you're scaling fast but the bank balance tells a different story, this episode will show you how to build a sustainable business that doesn't just look good on paper.

If you're loving this solo series, I'd love to hear your feedback. Email me directly at nathan@foundr.com — I read every reply. Hope you enjoy it.

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