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How to Read a Profit and Loss Statement for Your Small Business
Sarah Fraser : August 20, 2026
For a small business owner, knowing whether money is coming in is not enough. Understanding where revenue is coming from, where money is being spent, and how much profit the business is generating can lead to better decisions about pricing, hiring, growth, and expenses.
That is where a profit and loss statement comes in.
A profit and loss statement, also known as a P&L statement or income statement, summarizes a business’s financial performance over a specific period. Learning how to read a profit and loss statement can help business owners move beyond tracking transactions and use their financial information to make more informed decisions.
What Is a P&L Statement?
A profit and loss statement summarizes the revenue recognized and costs and expenses assigned to a specific period, such as a month, quarter, or year.
A typical profit and loss statement for a small business may include:
- Revenue: Income recognized from products or services
- Cost of goods sold (COGS): Costs assigned to products sold or services delivered
- Gross profit: Revenue remaining after COGS or other direct costs
- Operating expenses: Costs associated with running the business
- Operating profit: Profit from the business’s core operations, based on the report’s classification of income and expenses
- Net profit or loss: The overall accounting result after the items included in the P&L have been recorded
At its simplest:
Revenue – Expenses = Profit or Loss
However, the real value of a P&L is not just the final profit number. The individual sections can help business owners understand why the business produced that result.
Financial-statement presentation can vary depending on the business, accounting software, and reporting method. In addition, financial accounting results do not always equal federal taxable income.
Is an Income Statement the Same as a Profit and Loss?
Usually, yes. An income statement and a profit and loss statement generally refer to the same type of financial report.
You may also hear terms such as P&L statement, statement of operations, or statement of earnings. The terminology and presentation may vary, but the report generally summarizes revenue, expenses, and the resulting profit or loss over a period.
The P&L is one component of small business financial statements. Two other important reports are the balance sheet and cash flow statement.
A balance sheet shows what a business owns, owes, and has invested in the business at a particular point in time. A cash flow statement helps explain how cash moved into and out of the business during a period.
Together, these reports provide a more complete picture of a company’s financial position and performance.
1. Start With Revenue: Are Sales Actually Growing?
Revenue is typically near the top of a P&L and may also be labeled sales, income, gross receipts, or service revenue.
Rather than looking only at the total, compare revenue over time.
Ask questions such as:
- Is revenue increasing, decreasing, or remaining relatively flat?
- How does this month or quarter compare with the same period last year?
- Which products or services generate the most revenue?
- Is revenue concentrated among only a few customers?
- Are there noticeable seasonal patterns?
- Is actual revenue meeting the company’s budget or forecast?
Increasing revenue is generally encouraging, but higher sales do not automatically mean higher profits. Sales could increase while labor, materials, discounts, or other expenses increase even faster.
Revenue recognition also depends on the business’s accounting method and financial-reporting practices. A cash-basis business generally records income when it receives payment, while an accrual-basis business generally records income when it has earned the income under applicable accounting rules, even if payment has not yet been received.
P&L revenue may also differ from the amount reported for federal tax purposes. For example, certain sales taxes collected from customers on behalf of a government generally are not business income, while tax treatment can vary depending on how a tax is imposed and collected.
2. Look at Cost of Goods Sold and Gross Profit
Cost of goods sold (COGS) generally represents the costs assigned to products sold or services delivered. The appropriate classification depends on the type of business, its accounting method, and how its financial statements are prepared.
Depending on the business, COGS or cost of revenue may include:
- Inventory and materials
- Direct production labor
- Packaging
- Subcontractor costs connected to customer projects
- Freight-in or other costs of acquiring goods
- Fulfillment costs
- Certain production or service-delivery overhead
For manufacturers and some product-based businesses, COGS may include allocated indirect production costs such as production-related rent, utilities, depreciation, insurance, maintenance, supervision, and other overhead. A cost included in COGS should not also be deducted separately as an operating expense.
Service businesses may not calculate COGS in the same manner as retailers or manufacturers. However, they may separately track direct labor, subcontractors, or other costs associated with delivering services. Some accounting systems refer to these amounts as cost of services or cost of revenue.
For a product business, the basic calculation is:
Net Sales – Cost of Goods Sold = Gross Profit
Net sales may reflect revenue after returns and allowances. For some service businesses, the calculation may instead be described as revenue less the costs of providing services.
Gross profit helps show how much remains to cover operating expenses and ultimately generate a profit.
Pay Attention to Gross Margin
Gross margin shows gross profit as a percentage of revenue or net sales:
Gross Profit ÷ Revenue = Gross Margin
For example, suppose a company generates $100,000 in revenue and incurs $40,000 in COGS.
- Gross profit: $60,000
- Gross margin: 60%
Tracking gross margin over time can be particularly useful. A declining margin could indicate:
- Rising materials or labor costs
- Inadequate pricing
- Increased discounting
- Changes in the company’s product or service mix
- Inefficient production or fulfillment
- Certain jobs, customers, or products becoming less profitable
There is no single “good” gross margin that applies to every small business. Industry, business model, pricing, labor requirements, and other factors can significantly affect margins. Comparing current performance with prior periods, budgets, and relevant industry information can provide more useful context.
Gross margin is a management ratio. It is not a federal tax deduction or a statutory tax threshold.
3. Review Where the Business Is Spending Money
Next, look at operating expenses.
Operating expenses are costs associated with running the business that are not included in COGS or another cost-of-revenue category. Classification can vary. For example, depreciation may be treated as an operating expense for one business but included in production overhead and COGS for another.
Common operating expenses may include:
- Payroll and employee benefits
- Rent and utilities
- Advertising and marketing
- Insurance
- Professional fees
- Software and technology
- Office expenses
- Vehicle and travel expenses
- Repairs and maintenance
- Depreciation
- Bank and merchant processing fees
Good business financial reporting should make these categories easy to understand and compare.
Look for significant changes rather than simply trying to minimize every expense. Some increases may be intentional investments in growth.
Consider:
- Are expenses increasing faster than revenue?
- Have recurring expenses increased without a clear business benefit?
- Are payroll costs consistent with the company’s workload and revenue?
- Are there unusually large or one-time expenses that need investigation?
- Are transactions being categorized correctly?
- Are personal expenses being kept separate from business expenses?
- Are any costs that belong in COGS being reported as operating expenses instead?
These questions can turn a basic accounting report into useful management information.
4. Understand Operating Profit vs. Net Profit
A P&L may show several measures of profitability. The meaning of each measure depends on how the report is prepared.
Operating Profit
Operating profit generally means gross profit less expenses classified as operating expenses:
Gross Profit – Operating Expenses = Operating Profit
This measure can help owners evaluate whether the company’s core business operations are profitable before considering certain non-operating items.
However, operating profit is not a universal federal tax measure. Businesses and accounting systems may classify interest, depreciation, gains, losses, and other items differently. Review the report to understand which items are included in operating expenses and which are excluded.
Net Profit
Net profit or loss is the accounting result after the items included in the P&L have been recorded. Depending on the reporting format, it may include:
- Interest income or expense
- Depreciation
- Gains or losses
- Other non-operating income or expenses
- Certain taxes or tax-related amounts
Net profit should not automatically be treated as federal taxable income. Taxable income may differ because of accounting-method timing, depreciation rules, capitalization requirements, meals and entertainment rules, nondeductible expenses, personal expenses, and other tax adjustments.
For example, federal income taxes generally are not deductible as a Schedule C business expense. A sole proprietor also generally cannot deduct the owner’s salary or personal withdrawals as business expenses. Compensation rules may differ depending on whether the business is operated as a sole proprietorship, partnership, corporation, or another entity.
Instead of focusing exclusively on the bottom line, look at how the business arrived there.
5. Calculate Major Expenses as a Percentage of Revenue
Dollar amounts tell only part of the story.
Looking at major expenses as percentages of revenue can make it easier to identify trends as the business grows.
Useful measurements may include:
- Gross margin: Gross profit ÷ revenue
- Payroll percentage: Payroll expense ÷ revenue
- Marketing percentage: Marketing expense ÷ revenue
- Occupancy percentage: Rent and related expenses ÷ revenue
- Operating expense ratio: Operating expenses ÷ revenue
- Net profit margin: Net profit ÷ revenue
Suppose payroll increases from $30,000 to $35,000. On its own, the $5,000 increase might appear concerning.
But if revenue increased substantially during the same period, payroll may represent a smaller percentage of revenue than before. This is why percentages and trends can provide better context than isolated numbers.
The goal is not necessarily to minimize every expense. Hiring, marketing, technology, and other expenditures may be appropriate investments if they support profitable growth. The important question is whether spending is intentional and producing an appropriate business benefit.
6. Watch for Significant Changes in Your P&L Statement
One of the biggest benefits of reviewing a profit and loss statement for a small business regularly is identifying changes before they become larger problems.
Some changes that may warrant further investigation include:
Declining Revenue
Customer loss, changing demand, seasonality, competition, or pricing could be contributing factors. Identifying the cause is important because each situation may require a different response.
Shrinking Gross Margins
Direct costs may be rising faster than prices, discounts may be reducing effective selling prices, or the company’s mix of products and services may have changed.
Expenses Growing Faster Than Revenue
Higher sales do not necessarily improve profitability if payroll, rent, marketing, software, or other overhead increases even faster.
Heavy Revenue Concentration
Relying on one customer, contract, product, or service for a significant portion of revenue can create additional business risk.
Profit That Does Not Match Available Cash
A P&L measures accounting income and expenses. It does not, by itself, explain every change in the bank account.
For example:
- Accounts receivable may increase before customers pay.
- Inventory purchases may use cash before the related products are sold.
- Loan proceeds increase cash but generally are not business income.
- Repayment of loan principal reduces cash but generally is not an operating expense.
- Capital purchases may reduce cash but generally are recovered through depreciation or other applicable tax rules rather than deducted entirely as an ordinary expense in the year of purchase.
- Owner distributions or withdrawals reduce cash but generally are not business expenses.
Reviewing the P&L with the balance sheet and cash flow information can provide a more complete picture.
Large Budget Variances
Significant differences between expected and actual results may indicate inaccurate forecasts, delayed sales, unexpected costs, or bookkeeping errors.
Unexpected Transactions
Duplicate transactions, unusual expenses, misclassifications, or one-time events can distort financial reports.
Identifying a change does not automatically mean something is wrong. Instead, it gives the business owner an opportunity to understand what happened and decide whether action is necessary.
7. How Often Should a Small Business Review Its P&L?
For many small businesses, reviewing the P&L monthly is a useful starting point.
A monthly review might include:
- Current-month results
- Year-to-date results
- Comparison with the previous year
- Comparison with the company’s budget or forecast
- Significant changes in revenue and expenses
- Gross and net profit margins
- Unusual transactions requiring further investigation
- Review of related balance sheet and cash flow information
Businesses experiencing rapid growth, tight cash flow, significant inventory, fluctuating revenue, or substantial payroll expenses may benefit from monitoring financial information more frequently.
Waiting until tax season to review financial performance can mean waiting too long to identify trends that could have influenced decisions throughout the year.
8. Use Your P&L to Make Business Decisions
Understanding how to read a profit and loss statement becomes particularly valuable when the information is used to make decisions.
Pricing
Declining gross margins could prompt a closer look at prices, discounts, supplier costs, labor efficiency, or the profitability of particular products and services.
Hiring
Before adding employees, owners can review revenue, payroll expenses, and operating profit to better understand how additional payroll could affect the business. Compensation should also be evaluated in light of the entity’s tax and employment rules.
Growth
Considering a new location, equipment purchase, additional service, or other expansion?
Historical P&L information can help owners evaluate the existing business and create more informed projections. The analysis should also consider cash needs, debt payments, capital expenditures, and working capital—not just accounting profit.
Cost Management
Regular financial analysis can identify expenses that are increasing disproportionately or no longer provide sufficient value to the business.
Tax Planning
Accurate financial records can support better tax planning throughout the year. However, book profit is not necessarily taxable income.
For federal tax purposes:
- Business expenses generally must be ordinary and necessary for carrying on a trade or business.
- Capital expenditures generally must be capitalized and recovered through depreciation, amortization, or COGS rather than deducted immediately.
- Business meals are generally subject to a 50% deduction limitation, while entertainment expenses generally are not deductible.
- Federal income taxes generally are not deductible as Schedule C business expenses.
- Repairs may be currently deductible, while betterments, restorations, and adaptations generally must be capitalized.
- Owner compensation and withdrawals are treated differently depending on the business entity and tax classification.
This article explains P&L concepts in general terms. Financial-statement presentation and federal tax treatment may differ. A book expense, loss, or write-off should be reviewed under the rules applicable to the business’s entity type, accounting method, and specific transaction.
What Is a Profit and Loss Write-Off?
The phrase “profit and loss write-off” is an informal expression, not a single federal tax category.
A “write-off” generally means that an amount is recorded as an expense, loss, reduction in asset value, or cost in the accounting records. The entry may reduce reported book profit, but it does not automatically create a tax deduction.
For federal tax purposes, the result depends on what the amount represents.
Ordinary Business Expenses
An ordinary and necessary business expense may be deductible under the general business-expense rules. The expense must relate to the trade or business and satisfy applicable substantiation and other requirements.
Capital Costs
A capital cost generally is not immediately deductible merely because it appears as a cost in the accounting records. It may need to be recovered through depreciation, amortization, or COGS.
Bad Debts
A business bad debt may be deductible if it meets the applicable requirements. Generally, the debt must have been created or acquired in connection with the taxpayer’s trade or business, or have been closely related to the business when it became worthless.
A cash-method business generally cannot claim a bad-debt deduction for an unpaid customer invoice that was never included in income. A partially worthless business debt generally is limited to the amount charged off on the books during the year. Different rules may apply to a totally worthless debt.
Inventory Adjustments
An inventory adjustment or write-down may affect book profit, but its federal tax treatment depends on the taxpayer’s inventory method, valuation rules, and whether the cost is recovered through COGS. Not every financial-accounting inventory write-down is automatically deductible for federal tax purposes.
Losses on Business Property
A loss on business property may be subject to the rules governing business losses, including applicable requirements concerning the property, the event causing the loss, basis, disposition, and timing. It should not automatically be treated as an ordinary operating expense.
Fines and Penalties
Government fines and penalties generally are not deductible. Limited exceptions may apply, including certain qualifying restitution payments or amounts paid to come into compliance with the law, subject to specific statutory requirements.
Contractual damages or amounts paid for late performance or nonperformance may be treated differently from governmental fines and penalties.
Finally, costs included in COGS should not also be deducted a second time as operating expenses.
The key point is simple:
An accounting write-off does not automatically mean the amount is deductible for tax purposes.
Business owners should review significant write-offs with their accounting or tax professional to understand both the financial-reporting and tax consequences.
How a P&L Fits Into Small Business Financial Statements
A P&L is important, but it should not be evaluated completely on its own.
The three primary small business financial statements provide different information:
- Profit and loss statement: How much the business earned and spent over a period
- Balance sheet: What the business owns, owes, and has invested at a particular point in time
- Cash flow statement: How cash moved through the business during a period
For example, a business might report a profit on its P&L but still experience cash flow challenges because customers have not paid outstanding invoices. Alternatively, the business may have cash from a loan even though the loan proceeds are not income.
Looking at these reports together can provide a more complete understanding of the company’s financial health.
When Accounting or Advisory Support Can Help
A well-organized P&L should do more than satisfy bookkeeping requirements. It should give business owners information they can use.
Professional accounting or advisory support may be helpful when:
- Financial reports contain unexplained or inconsistent results
- Bookkeeping is behind or financial statements are not available regularly
- The business is growing quickly
- Margins are changing significantly
- The company has multiple entities, locations, or revenue streams
- Inventory or job costing is important
- The owner is preparing to hire, borrow, invest, or expand
- Financial reporting does not provide enough detail to make decisions
- Tax planning and business decisions are becoming increasingly connected
- The business has significant write-offs, bad debts, inventory adjustments, or asset dispositions
Accurate bookkeeping creates the foundation for useful reporting. From there, thoughtful financial analysis can help business owners better understand performance and plan for what comes next.
Turn Your Financial Statements Into Useful Business Information
A profit and loss statement is one of the most useful financial reports available to a small business owner—but only when the numbers are accurate, timely, and understood.
Rather than looking only at whether the business made a profit, review revenue trends, gross margins, operating expenses, major expense percentages, and changes from previous periods. Also consider how the P&L relates to the balance sheet, cash flow, accounting method, and tax reporting.
Over time, this can turn the P&L from a historical accounting report into a practical decision-making tool.