The Income Statement: Are You Making Money?

Read it top to bottom like a staircase. Each step down, gross profit then operating income then net income, is its own health check.

7 min readBeginnerUpdated July 2026
Key takeaways
The Income Statement covers a period of time and ends in the "bottom line": net income.
The order of the lines is the trick: revenue steps down through costs in a deliberate sequence.
Gross profit, operating income, and net income are three different profits, each with a different meaning.

See it happen

Before the words, watch the shape. Revenue comes in at the top and each cost peels a slice away until net income is what’s left.

Revenue comes in at the top. Each cost (in red) peels a slice away, until Net income is what’s left.
Revenue
100
Cost of goods sold
40
Gross profit
60
Operating expenses
35
Operating income
25
Interest and tax
5
Net income
20

The staircase, one step at a time

The statement starts with every dollar you earned, then subtracts costs in a deliberate order. Each step down tells you something different about the health of the business.

  • Revenue is the top line: every dollar from selling, before anything is taken out. The size of the pie before anyone takes a slice.
  • Cost of goods sold (COGS) is what it directly costs to deliver each sale. Beans and cups for a café, hosting for an app, materials for a workshop. Subtract it and you get gross profit.
  • Operating expenses are the costs of simply existing: rent, marketing, salaries, software. They show up even in a month where you sell nothing. What survives them is operating income.
  • Interest and tax come last, because they’re about how the business is financed and taxed, not how it runs. What’s left is net income, the famous bottom line.

A worked example

Here’s the whole staircase with real numbers, for a small bakery in a decent month:

Sunny Bakery · one month
Revenue · bread, cakes, coffee$20,000
Cost of goods sold · flour, butter, baker hours−$8,000
Gross profit · 60% gross margin$12,000
Rent−$3,000
Marketing−$1,000
Admin and insurance−$2,000
Operating income$6,000
Interest on the oven loan−$500
Taxes (~25%)−$1,375
Net income · the bottom line$4,125

Read the staircase and the story writes itself: the bakery keeps 60 cents of every sales dollar after ingredients, the core operation earns a healthy $6,000, and after financing and tax the owner truly nets $4,125. Three different profits, three different insights.

The trap to watch for

Profit is an opinion, cash is a fact
This statement counts revenue when it’s earned, not when the money lands. A record month on paper can sit right next to a bank account heading for zero. Always read the Cash Flow Statement alongside it.
See it in a real model

The fastest way to make this stick is to build one and watch the numbers move.

Open the builder

Related reading

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Profit Margins: Gross, Operating & Net
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Profit vs. Cash: The Difference That Sinks Businesses
Why a company can post record profits and still miss payroll. The single most important idea in this whole library.
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The Three Statements
How the Three Statements Connect
The part most guides skip. The statements are plumbed into each other, so changing one number ripples through all three.
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