What a profit and loss account shows you
A profit and loss account (also called a P&L statement or income statement) is a record of money that came in and money that went out over a set period — usually a month, quarter, or year. It tells you whether a business made money, lost money, or broke even. The simplest way to think of it: revenue minus expenses equals profit or loss.
You might see a P&L account if you own a small business, work in accounting, or are considering lending money to or investing in a business. Banks sometimes ask for P&L statements to decide whether to give you a loan. Understanding how to read one helps you see the real financial health of a business — not just whether it's still operating, but whether it's actually making money.
Key Takeaways
- A profit and loss account lists revenue at the top, then subtracts expenses in layers to show gross profit, operating profit, and net profit.
- Revenue is money coming in from selling products or services; cost of goods sold is the direct cost to make or buy those products.
- Operating expenses are the day-to-day costs to run the business, like salaries, rent, and utilities — separate from the cost of goods sold.
- The bottom line is net profit or net loss, which is what remains after all revenue and all expenses are accounted for.
- Comparing P&L accounts from different periods shows whether a business is improving or declining.
The three main sections: revenue, expenses, and profit
Every P&L account has the same basic shape. At the top is revenue — the total money the business brought in from selling its products or services. Below that are expenses — all the money the business spent. At the bottom is the result: profit (if revenue is larger) or loss (if expenses are larger).
The account doesn't just show one profit number. Instead, it shows profit at different stages as expenses are subtracted layer by layer. This matters because different types of expenses tell you different things about how the business actually works. A business might have high revenue but low profit if its expenses are enormous. Another might have lower revenue but higher profit because it controls costs well.
Revenue: the money coming in
Revenue is listed first and is usually the simplest line to understand. It's the total money the business received from customers for its products or services during the period. If a bakery sold 500 loaves of bread at $5 each, its revenue for that period is $2,500. If a plumber completed 20 jobs at $150 each, revenue is $3,000.
Sometimes you'll see revenue broken down by type — for example, a restaurant might list food sales separately from bar sales, or a retail store might separate in-store sales from online sales. This breakdown helps you see which parts of the business are actually bringing in money. A P&L account might also show returns and allowances — money refunded to customers — subtracted from revenue to show the true amount kept.
Cost of goods sold: the direct cost to make or buy what you sell
Cost of goods sold (often abbreviated COGS) is the direct cost to produce or purchase the products the business sold. For a bakery, COGS includes flour, yeast, sugar, and eggs — the ingredients that go into each loaf. For a retail store, COGS is what the store paid to buy the items it then sold to customers. For a service business like plumbing, COGS might include the cost of parts used on jobs.
COGS does not include salaries for office staff, rent for the building, or advertising — those are operating expenses, which come later. The key test: if the business didn't make that sale, would it have spent that money? If yes, it's COGS. If no, it's an operating expense. When you subtract COGS from revenue, you get gross profit — the money left over before paying for the day-to-day cost of running the business.
Operating expenses: the cost to run the business
Operating expenses are all the costs to keep the business running that aren't directly tied to making one product or delivering one service. This includes salaries for managers and office staff, rent or mortgage on the building, utilities, insurance, office supplies, advertising, and vehicle costs. These expenses happen whether the business sells one item or one hundred.
Operating expenses are often grouped into categories to make them easier to read. You might see "Salaries and wages," "Rent and facilities," "Marketing and advertising," and "Administrative expenses" listed separately. When you subtract total operating expenses from gross profit, you get operating profit — the money the business made from actually running its core operations, before taxes and interest.
Interest, taxes, and the bottom line
After operating profit, a P&L account may show additional expenses that aren't part of day-to-day operations. Interest expense is money the business paid on loans or credit lines. Income tax is what the business owes to the government based on its profit. Some P&L accounts also show depreciation — an accounting way of spreading the cost of equipment or vehicles over several years instead of counting the whole cost in one year.
After all these items are subtracted, you reach the bottom line — the net profit or net loss. This is the true profit: what the business actually kept after paying for everything. If the number is positive, the business made money. If it's negative, the business lost money. This is the number that matters most when you're deciding whether a business is financially healthy.
How to compare P&L accounts across time
A single P&L account for one month or year tells you what happened during that period. But to understand whether a business is improving or declining, you need to compare P&L accounts from different periods. If a business's net profit was $5,000 last year and $8,000 this year, it's improving. If revenue stayed the same but expenses grew, the business is becoming less efficient.
Look for patterns: Is revenue growing? Are expenses growing faster than revenue? Is gross profit staying steady while operating expenses climb? These questions help you see whether the business is on a healthy path or heading toward trouble. Many businesses also compare their P&L to a budget — a forecast of what they expected to earn and spend. If actual results are very different from the budget, that's worth investigating.
A straightforward example: reading a real P&L account
Imagine a small online clothing store. Its P&L for one month might look like this:
| Revenue | $12,000 |
| Cost of goods sold (fabric, buttons, tags) | $4,800 |
| Gross profit | $7,200 |
| Salaries | $2,500 |
| Rent | $1,200 |
| Shipping supplies | $600 |
| Website hosting and software | $300 |
| Advertising | $800 |
| Operating profit | $1,800 |
| Interest on business loan | $150 |
| Net profit | $1,650 |
Reading this account: The store brought in $12,000 in sales. After paying for the clothing itself, it had $7,200 left. After paying salaries, rent, and other day-to-day costs, it had $1,800 in operating profit. After paying interest on a loan, the final profit was $1,650. This tells you the store is profitable and has room in its budget, but most of its money goes to salaries and rent.
Frequently Asked Questions
What's the difference between gross profit and net profit?
Gross profit is revenue minus the direct cost of the products sold — it shows how much money is left after paying for inventory or materials. Net profit is what remains after subtracting all expenses, including salaries, rent, taxes, and interest. Net profit is the true bottom line.
Why would a business show a loss on its P&L account?
A business loses money when total expenses exceed total revenue. This can happen in early years while a business is growing, during economic downturns, or if a business is poorly managed. A single month of loss isn't always a sign of trouble, but repeated losses over time are a warning sign.
Can I use a P&L account to decide if I should lend money to a business?
A P&L account is one useful tool, but not the only one. It shows whether a business is profitable, but not whether it has cash on hand to repay a loan. You'd also want to see a balance sheet (which shows assets and debts) and cash flow statement (which shows actual money moving in and out). Together, these three documents give a fuller picture.
What if a P&L account shows revenue but no profit?
This means the business is bringing in money but spending it all — or more — on expenses. The business might be investing heavily in growth, or it might be inefficient. Look at whether expenses are reasonable for the amount of revenue, and whether the business has a plan to become profitable.
How often should a business create a P&L account?
Most businesses create P&L accounts monthly so they can spot problems early. Many also create quarterly and annual P&L accounts for a longer view. Banks and investors often ask for annual P&L accounts, sometimes going back several years, to see trends.