How to Read a Profit & Loss Statement
The Profit & Loss statement (also called an Income Statement or P&L) is the most important financial document for understanding your business's performance. It tells you whether you're making money, where your money is going, and which parts of your business are most profitable. Here's how to read one.
The P&L Formula
Revenue − Cost of Goods Sold (COGS) = Gross Profit
Gross Profit − Operating Expenses = Operating Income (EBITDA)
Operating Income − Interest − Taxes − Depreciation = Net Profit
Each line tells you something different about your business. Let's walk through them.
Line 1: Revenue (Top Line)
Revenue is the total money coming into your business from sales before any deductions. It's called the "top line" because it sits at the top of the P&L. Track revenue by product line, service type, or customer segment — knowing where revenue comes from is just as important as the total amount.
Watch for: Revenue growth is good, but if revenue grows faster than gross profit, you may be discounting too heavily or your costs are rising unsustainably.
Line 2: Cost of Goods Sold (COGS)
COGS is the direct cost of producing your product or service. For a product business: raw materials, manufacturing labor, and shipping. For a service business: direct labor, subcontractors, and software costs directly tied to delivering the service.
Key metric: COGS as a percentage of revenue (COGS/Revenue). A rising COGS % means your costs are outpacing your pricing. Most businesses target COGS below 60-70%.
Line 3: Gross Profit & Gross Margin
Gross Profit = Revenue − COGS. This is your "manufacturing profit" — the money left after paying for what you sell. Gross Margin = Gross Profit / Revenue × 100, shown as a percentage.
Why it matters: Gross margin is the single most important profitability metric. It tells you whether your product pricing is right. A declining gross margin signals cost pressure or pricing weakness. Use the Gross Margin Calculator to track this.
Line 4: Operating Expenses
Operating expenses (OpEx) are the costs of running your business that aren't directly tied to producing your product: rent, marketing, salaries (non-production), insurance, software subscriptions, professional fees, and office supplies.
Categories to track separately:Sales & Marketing, General & Administrative, R&D. Each tells a different story. If marketing expenses are growing but revenue isn't, you have an efficiency problem. If G&A is rising faster than revenue, you have overhead creep.
Line 5: Operating Income (EBITDA)
Operating Income = Gross Profit − Operating Expenses. This is your business's operating profit before financing costs and taxes — often called EBITDA (Earnings Before Interest, Taxes, Depreciation, Amortization).
Why it matters: EBITDA shows how profitable your core business operations are, independent of how you finance them. Banks and buyers use EBITDA to value your business. See the EBITDA guide for details.
Line 6: Net Profit (Bottom Line)
Net Profit = Operating Income − Interest − Taxes − Depreciation. This is your "bottom line" — what's left after everything. Net Profit / Revenue × 100 = Net Profit Margin.
The big picture: A business can have positive gross profit (strong pricing), positive EBITDA (profitable operations), but negative net profit (too much debt or large depreciation). Each layer tells a different story.
Example P&L Statement
| Line Item | Amount | % of Revenue |
|---|---|---|
| Revenue | $500,000 | 100% |
| COGS | ($200,000) | 40% |
| Gross Profit | $300,000 | 60% |
| Operating Expenses | ($180,000) | 36% |
| EBITDA | $120,000 | 24% |
| Interest & Taxes | ($30,000) | 6% |
| Net Profit | $90,000 | 18% |
This business has healthy gross margins (60%), reasonable operating expenses (36%), and a solid 18% net profit margin. The 6% gap between EBITDA (24%) and net profit (18%) is interest and taxes — worth reviewing if that gap is growing.
Monthly vs. Annual P&L
Reviewing a P&L monthlyis essential because annual P&Ls can hide seasonal problems. A restaurant might show 5% net profit for the year — but that could mean 15% in summer and -5% in winter. Monthly P&Ls reveal the true picture and let you act quickly.
Use the Cash Flow Forecast to project future P&L trends based on historical data and known upcoming expenses.
Frequently Asked Questions
What's the difference between a P&L and a balance sheet?
The P&L shows performance over a period (month, quarter, year). The balance sheet shows a snapshot of assets, liabilities, and equity at a single point in time. Think of the P&L as a movie and the balance sheet as a photo. Both are needed for a complete financial picture.
How often should I review my P&L?
Monthly review is standard for small businesses. Set a recurring calendar reminder to review your P&L within 15 days of month-end. Focus on: gross margin trend, operating expense ratios, and net profit compared to budget or last year.
What is a good net profit margin?
It depends heavily on industry. Restaurants: 3-6%. Retail: 2-5%. Consulting: 15-25%. Software: 15-25%. Check our industry benchmark pages for your specific sector.
Why does my P&L show profit but my bank account is shrinking?
This is the classic cash vs. accrual difference. Your P&L may include unpaid invoices as revenue (accrual basis), while your bank account only shows cash received. Also: loan principal payments, equipment purchases, and owner draws don't appear on the P&L but consume cash. Use the Cash Flow Forecast to reconcile the two.