📅 WEEK 32
📌 Rule No. 13 —Know your numbers.
— The Numbers You Should Know Cold
Rule: Know your numbers.
Source: Financial Intelligence by Karen Berman & Joe Knight
You cannot manage what you do not measure. And you cannot measure what you do not understand.
Financial statements are not accounting documents. They are the language through which a business tells its own story. A leader who cannot read them fluently is operating with significant blind spots — no matter how strong their product instincts or leadership presence.
Berman and Knight made the point clearly: financial literacy is not just for the finance team. Executives at every level make decisions that affect the P&L, the balance sheet, and the cash flow statement. Those decisions should be grounded in an understanding of what the numbers are actually saying.
The specific numbers that matter vary by business, but the principle is universal. Gross margin, cash runway, customer acquisition cost, revenue per employee — whatever the critical indicators are in your model, a serious leader knows them, watches them, and understands what moves them.
What I’ve observed in struggling businesses is a pattern where leaders are surprised by their financial position. That surprise, when it comes at the wrong moment, is among the most dangerous situations a business can face.
Know your numbers is one of the Institute’s core principles because financial intelligence is a leadership skill, not a support function. The leaders who know their numbers are the leaders who make better decisions faster.
The numbers will tell you the truth, whether or not you’re listening.
coming Monday, August 10, 2026
If you don’t understand the numbers, you don’t understand the business. Knowing your financials isn’t just for accountants—it’s essential for every leader who wants to make smart decisions, allocate resources wisely, and build a business that lasts.
Don’t stop here. The next lesson builds on this one.