Start with the reporting period
A P&L always covers a period: a month, a quarter, a year, or another chosen range. Compare reports over consistent date ranges. A quarterly result and an annual result are not directly comparable without considering the difference in time and any seasonal activity.
Revenue, direct costs, and gross profit
Revenue is income from the business’s activity. Cost of goods sold represents costs directly associated with delivering products or services, depending on the business. Gross profit is revenue minus those direct costs. For example, $20,000 of revenue and $4,000 of direct costs produce $16,000 of gross profit.
Operating expenses and net profit
Operating expenses are other costs of running the business, such as rent, software, advertising, or insurance. Subtract operating expenses from gross profit to obtain operating profit, then subtract interest and applicable other expenses to reach net profit. If that $16,000 gross profit is followed by $6,000 of operating expenses and $200 of interest, net profit is $9,800.
Margins put amounts in context
Gross margin divides gross profit by revenue. Net margin divides net profit by revenue. In the example, net margin is 49%: $9,800 divided by $20,000. Margins cannot be computed meaningfully when revenue is zero, so this tool shows a dash in that case.
Cash basis versus accrual basis
Cash-basis records generally follow income received and expenses paid. Accrual-basis records generally follow income earned and expenses incurred, even if payment happens later. IRS Publication 583 explains these approaches and why supporting records matter. Pnlwise’s statement-based report follows cash movements in the accounts you provide.
Profit is different from your bank balance
Your balance also changes when you borrow, contribute money, withdraw funds as an owner, or transfer money between accounts. Those movements are not automatically P&L income or expenses. Conversely, depreciation and other non-cash accounting entries cannot be read directly from bank transactions.
Use the report with its limits in mind
A statement-based P&L can organize an incomplete set of records, but it cannot make that set complete. Review the source accounts, dates, and categories. If the report will support an important accounting, financing, or tax decision, consult a qualified professional about any necessary adjustments.
Further reading: IRS Publication 583: Starting a Business and Keeping Records and Publication 538: Accounting Periods and Methods. This guide is general information, not tax advice.
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