Profit and Loss (P&L)

What is a “profit and loss” (P&L) statement?

A profit and loss (P&L) statement is a financial report that summarises a company’s revenues, costs and expenses over a specific period — typically a month, quarter or year — to show net profit or loss. P&L is synonymous with the income statement; the term “P&L” is more common in operating contexts, “income statement” in formal accounting and regulatory filings.

P&L structure

1. Revenue (top line)
2. − COGS = Gross profit
3. − Operating expenses (SG&A, R&D, D&A) = Operating profit (EBIT)
4. ± Interest, other income/expense = Pre-tax income
5. − Tax = Net income (bottom line)

P&L vs. management vs. statutory

• Management P&L: detailed by product line, customer segment, channel — used for operating decisions.
• Statutory P&L: IFRS or US GAAP compliant; used for audits, tax and regulator filings.
• The two should reconcile but rarely match line-by-line because of grouping differences.

Founders and the P&L

• Track P&L monthly with prior-period comparisons.
• Variance analysis: explain every meaningful difference between actual and forecast.
• Cohort-level P&L analysis reveals which customer segments are profitable.
• P&L plus cash flow plus balance sheet form the integrated three-statement model investors expect.

Reading a startup P&L

Startup P&Ls reward a specific reading order: gross margin first (is there a real product economy under the growth?), then the operating-expense mix (R&D versus sales and marketing tells you what the company is buying with its burn), then the line between recurring and one-off items. Three traps recur in diligence: revenue recognised gross where the company is legally an agent (marketplace economics overstated), capitalised development costs flattering EBITDA, and “adjusted” figures whose adjustments are the business model. In transactions the P&L becomes a warranted document — locked-box accounts, earn-out EBITDA definitions and MAC clauses all hang off it — so the accounting policies behind each line deserve the same negotiation attention as the price.