How to Calculate Profit Margin: The Complete Guide for Small Business Owners (2026)
Most small business owners can tell you their revenue. Far fewer can tell you their profit margin β and that single number matters more than any other. It's the difference between a business that grows and one that quietly bleeds money while looking busy.
What is profit margin, exactly?
Profit margin is the percentage of revenue that remains as profit after all costs. A 30% margin means you keep $0.30 of every dollar that comes in. There are two types you should know:
- Gross margin = (Revenue β Cost of Goods Sold) Γ· Revenue. It shows how profitable your products themselves are.
- Net margin = (Revenue β ALL costs) Γ· Revenue. This is your real take-home profitability.
How to calculate it (with a real example)
Example: Your bakery made $12,000 this month. Ingredients, rent, wages, and utilities cost $8,400. Your profit is $3,600, and your margin is 3,600 Γ· 12,000 = 30%. Healthy.
What is a "good" profit margin?
It depends heavily on your industry:
- Restaurants: 3β9%
- Retail and e-commerce: 5β15%
- Professional services: 15β30%+
- Software: 15β25%+
Compare yourself against businesses in your sector β not against generic internet numbers.
5 ways to improve your margin
- Raise prices strategically. A 5% price increase can grow profit 20%+ if volume holds.
- Cut your cost of goods. Negotiate with suppliers or buy in bulk.
- Remove low-margin products. Not every sale is a good sale.
- Reduce operating waste. Subscriptions you don't use, inefficient processes.
- Sell bundles. Higher perceived value, better margins.
The #1 mistake owners make
Confusing markup with margin. A 50% markup only gives you a 33% margin. Price by margin, not markup β it's the only way to guarantee your target profit.