What Is a Profit and Loss Statement? A Plain-English Guide

A profit and loss statement — also called a P&L, an income statement, or a statement of operations — is a financial report that shows your business's revenue, expenses, and resulting profit or loss over a specific period of time. It answers the most fundamental question in business: are we making money?

Despite being genuinely useful, most small business owners either never see their P&L or only look at it when their accountant hands it to them at year-end. This guide explains what the P&L actually contains, how to read it, and why reviewing it monthly gives you a significantly better view of your business than your bank balance alone.

What a P&L Shows You (and What It Doesn't)

A P&L covers a period of time — a month, a quarter, or a year. It tells you:

• How much revenue you earned during that period
• How much it cost you to deliver that revenue (cost of goods sold)
• What your operating expenses were (the costs of running the business)
• Whether you made a profit or a loss at the end

What a P&L does not show you: your cash position (that's a cash flow statement), what you own and owe (that's a balance sheet), or whether money has actually arrived in your bank account. A profitable business can still run out of cash — these are separate concepts we explore in our guides on what cash flow is and why businesses can be profitable but cash-strapped.

The Structure of a Profit and Loss Statement

Revenue (or Sales)

The total amount you invoiced or earned from selling your products or services during the period. This is gross revenue — before any costs are deducted. If you run a service business, this is what clients paid you. If you sell products, it's what customers paid for them.

Cost of Goods Sold (COGS)

The direct costs of producing what you sold. For a product-based business, this includes materials, manufacturing costs, and shipping. For a service business, it might include contractor costs or direct labor. COGS is subtracted from revenue to give you:

Gross Profit

Revenue minus COGS. This is how much the business made before accounting for the overhead costs of running it. The gross profit margin (gross profit ÷ revenue, as a percentage) tells you how efficiently you're delivering your product or service. We go deeper on this in our guide on gross profit vs. net profit.

Operating Expenses

The costs of running the business that aren't directly tied to producing what you sell. Common examples: rent, utilities, software subscriptions, marketing, insurance, salaries for administrative staff, professional fees (accountant, lawyer). These are sometimes called "overhead" or "SG&A" (selling, general & administrative expenses).

Operating Income (EBIT)

Gross profit minus operating expenses. This is your business's profitability from its core operations before accounting for interest and taxes.

Other Income / Expenses

Items not related to core operations: interest income, interest expense on loans, gains or losses on asset sales. Most small businesses have minimal items here.

Net Income (or Net Loss)

The bottom line: total revenue minus all expenses (COGS, operating expenses, interest, and taxes). If positive, it's a profit. If negative, it's a loss. This is what colloquially gets called "the bottom line."

A Simple P&L Example

Revenue                       $18,500
Cost of Goods Sold            − $4,200
Gross Profit                  $14,300  (77% gross margin)

Operating Expenses:
  Software & tools            − $450
  Marketing                   − $800
  Accountant fees             − $300
  Other overhead              − $600
Total Operating Expenses      − $2,150

Operating Income              $12,150
Taxes (estimated)             − $3,200
Net Income                    $8,950

This business made $18,500 in revenue, spent $4,200 on direct costs and $2,150 on overhead, and netted $8,950 after estimated taxes. Without a P&L, you might look at the bank balance and feel fine — but you wouldn't know your margins or whether your overhead is growing relative to your revenue.

Why Look at It Monthly?

A monthly P&L review takes 15 minutes and tells you things the bank balance can't:

• Is your gross margin holding steady, or are costs rising faster than revenue?
• Are operating expenses growing as a percentage of revenue?
• Which month was your most profitable, and why?
• Is a dip in net income coming from lower revenue or higher expenses?

These are the questions that let you make decisions — adjust prices, cut unnecessary spending, double down on what's working — rather than just reacting to your bank balance.

How to Get Your P&L

Any accounting software (QuickBooks, Xero, Wave, FreshBooks) generates a P&L report automatically from your bookkeeping records. If your books are current, the report is a few clicks away. If your books aren't current, the P&L won't be accurate — which is the most important reason to keep records up to date.

For more on financial statements, see our companion guides: What Is a Balance Sheet? and What Is Cash Flow?

The Bottom Line

A profit and loss statement answers whether your business is making money and where that money is coming from or going to. It's more useful than a bank balance, more specific than a general sense of "things are going well," and available in any accounting software from your current bookkeeping records. Review it monthly.