Revenue, Net Income &
COGS Formulas Explained
Understanding how revenue flows down to net income β and what gets subtracted along the way β is the foundation of reading any income statement. Learn the formulas lenders use to evaluate your business.
Revenue, COGS, and Net Income: The Three Pillars
Every income statement tells the same story: money comes in as revenue, direct production costs are subtracted as COGS, and what's left after all operating expenses is net income. Understanding each layer matters β not just for accounting, but because lenders analyze these figures to decide how much financing your business can handle.
Total Revenue
The total amount your business earns from sales before any deductions. Also called gross revenue or top-line revenue.
Cost of Goods Sold
The direct costs tied to producing or delivering what you sell β materials, labor, and manufacturing overhead.
Net Income
The "bottom line" β what remains after subtracting COGS, operating expenses, interest, and taxes from revenue.
Why lenders care: Lenders use your net income to calculate debt service coverage β whether your business generates enough profit to comfortably repay a new loan. A business with strong revenue but thin net income may qualify for less than expected.
From Revenue to Net Income: A Worked Example
Here's how the income statement flows from top-line revenue down to net income β using a simplified example of a $1,000,000-revenue business:
Gross profit vs. net income: Gross profit only subtracts COGS. Net income subtracts everything β operating expenses, interest, and taxes. A business can have strong gross profit but weak net income if overhead is high.
Essential Revenue & Income Formulas
These are the core formulas used on every income statement and by every lender evaluating your business financials.
This is the complete path from top-line revenue to bottom-line profit. Each subtraction represents a real cost the business incurs to operate.
How to Calculate Cost of Goods Sold (COGS)
COGS represents only the direct costs of producing what you sell β not rent, not marketing, not salaries for administrative staff. The formula uses your inventory at the beginning and end of the period to calculate what was actually consumed in production.
If you started the quarter with $30,000 in inventory, purchased $50,000 more, and ended with $20,000 on hand, your COGS = $30,000 + $50,000 β $20,000 = $60,000.
What counts as COGS depends on your business type. Here's a breakdown by industry:
| Business Type | What's Included in COGS | What's NOT Included |
|---|---|---|
| Retail / E-commerce | Wholesale cost of products sold, freight-in, packaging | Advertising, warehouse rent, admin salaries |
| Manufacturing | Raw materials, direct labor, factory overhead | Sales commissions, executive salaries, R&D |
| Restaurant / Food Service | Food ingredients, beverages, disposable supplies | Rent, front-of-house wages, marketing |
| Software / SaaS | Hosting costs, third-party APIs, customer support | Sales team, G&A, product development |
| Service Business | Direct labor for service delivery, subcontractors | Office rent, admin staff, marketing |
COGS is an expense, not an asset. It appears on the income statement, not the balance sheet. The unsold inventory that remains at period-end is the asset β it sits on the balance sheet until it's sold, at which point it becomes COGS.
How to Find Net Income on a Balance Sheet
Net income doesn't live directly on the balance sheet β it lives on the income statement. But it flows into the balance sheet through retained earnings. Here's how to work backwards and find it:
If retained earnings increased from $80,000 to $130,000 and the business paid $10,000 in dividends, net income for the period was $130,000 β $80,000 + $10,000 = $60,000.
Lender tip: When reviewing your financials for a loan, lenders reconcile the net income on your income statement with the change in retained earnings on your balance sheet. Discrepancies raise red flags β so consistent, accurate bookkeeping matters.
Frequently Asked Questions
What is the formula for net income?
How is cost of goods sold calculated?
What is total revenue and how is it calculated?
What is the difference between revenue and net income?
Is cost of goods sold an expense?
How do you calculate net income from a balance sheet?
Know Your Numbers. Access Better Funding.
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