How to read your P&L in five minutes a month

The profit & loss statement is the one report every owner should actually read. Not study — read. Five minutes a month is enough, once you know what you're looking at and what you're looking for.

What the P&L answers

Three questions, in order:

Did the business make money this month? (The bottom line.)
Where did the money go? (The expense sections.)
What's changing? (This month against last month, and against the same month last year.)

The anatomy, top to bottom

RevenueEverything you earned in the period — whether or not it's been collected yet, if your books are on an accrual basis.

Cost of goods soldCosts that scale directly with what you sell: materials, subcontractors, merchant fees. A service business may have very little here.

Gross profitRevenue minus COGS. This is what's left to run the business. Watch it as a percentage — falling gross margin means pricing or cost trouble.

Operating expensesThe cost of existing: rent, payroll, software, insurance, marketing. Mostly stable month to month — which is exactly why spikes stand out.

Net incomeWhat's actually left. Profit — on paper. (Cash is a different report; more on that below.)

The five-minute routine

Minute 1 — the bottom line. Profitable or not? Surprised? Surprise is the signal, in either direction.
Minute 2 — compare. Put this month next to last month and the same month last year. Trends matter more than any single number.
Minute 3 — scan expenses for strangers. You know roughly what rent and software cost. Anything unfamiliar or suddenly larger gets a question mark.
Minute 4 — check two ratios. Gross margin (gross profit ÷ revenue) and payroll as a share of revenue. If either drifts more than a few points, find out why.
Minute 5 — write down one question. Whatever bothered you, ask your bookkeeper. That question is the entire point of having reports.

Four things that trip owners up

Profit isn't cash

The P&L can show a great month while the bank account shrinks — unpaid invoices, loan principal, and owner draws all live off the P&L. If this happens to you regularly, read our guide on profit vs. cash flow.

Your own pay might not be an expense

Sole proprietors and most LLC owners take draws, which don't appear on the P&L at all. A "profitable" business that can't cover your draw isn't actually profitable enough. S-corp owner salaries, by contrast, do show up in payroll.

Loan payments are split

Only the interest portion is an expense. Principal reduces the loan on your balance sheet. If your books show whole loan payments as expenses, your profit is understated — and your books need attention.

Annual bills distort single months

Insurance or software billed once a year makes one month look terrible and eleven look better than they are. Good books spread these out; at minimum, know which month carries them.

From our desk

If your P&L has an "Ask My Accountant" or "Uncategorized" line with a real balance in it, read that first. It's where profit goes to hide.

This guide is general information for small business owners — not tax, legal, or accounting advice for your specific situation. Talk to your CPA, or to us, before acting on it.

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Read your P&L in five minutes a month.