The P&L in ten minutes: what to check monthly

What a P&L actually shows

A profit and loss statement is revenue minus expenses, arranged by category, for a set period — it tells you what the practice earned and spent, not what's sitting in the bank account, which is a different number for reasons covered elsewhere. Reading it well means checking a small, consistent set of lines every month rather than re-deriving the whole statement from scratch each time.

Most practice P&Ls run three or four sections: total revenue at the top, cost of providing care if you have any (contractor clinicians, clinical supplies), operating expenses (rent, software, insurance, continuing education), and net income at the bottom — the number that ultimately feeds your Schedule C 1Ref 1Internal Revenue Service (2026).Self-employed individuals tax center.That self-employed clinicians file Schedule C, the return the P&L's net income line ultimately feeds..

The ten-minute order

Check these in the same order every month, because later checks depend on having already confirmed the earlier ones — a revenue number you haven't sanity-checked makes every ratio built on top of it unreliable, and a net income figure read in isolation is the number most likely to mislead you.

Revenue: trend first, single-month number second

A single month's revenue swings for reasons that have nothing to do with how the practice is actually doing — a slow claim finally paid, a client cancellation streak, a short month with fewer business days — so the number worth trusting is the trend across several months, not any one month in isolation.

the solo dashboard is where a handful of these trend lines live together for a faster weekly glance; the P&L itself is the detailed version underneath it, worth opening in full at least once a month even if the dashboard is what you check more often.

Expenses: name a reason for the three biggest lines

Most practices have three or four expense categories that dominate the total — rent, payroll or contractor costs, software, and insurance are common ones — and those are the lines worth actually reading every month, because a real cost overrun almost always shows up first there. Everything ordinary and necessary to running the practice belongs somewhere on this list and is deductible as such 2Ref 2Internal Revenue Service (2026).Guide to business expense resources.That ordinary and necessary business expenses are deductible, the standard behind the expense lines a monthly P&L review checks..

A smaller category creeping up slowly is easy to miss for months; bookkeeping built on a real chart of accounts, with categories specific enough to mean something, is what makes this scan actually catch that kind of drift instead of hiding it inside a vague 'other' line.

Contractor costs get their own line, tracked toward year-end

Payments to anyone who isn't a W-2 employee — a covering clinician, a biller, a supervisor — belong in their own expense line, both because it's useful to see that cost separately and because $600 or more paid to a nonemployee across the year triggers a 1099-NEC obligation you'll need the running total for 3Ref 3Internal Revenue Service (2026).About Form 1099-NEC, Nonemployee Compensation.That $600+ payments to a nonemployee for services trigger a 1099-NEC, the reporting obligation behind the P&L's contractor cost line..

This line is also one of the easiest to reconcile against the 90-minute monthly close, since the contractor total there and the P&L line here should be the same number arrived at two different ways — a mismatch is worth chasing down immediately.

Equipment and depreciation don't move like cash

A depreciation line on your P&L reflects an equipment purchase being expensed gradually over its useful life rather than in the month you paid for it, following MACRS or a Section 179 election you may have made 4Ref 4Internal Revenue Service (2026).Publication 946, How To Depreciate Property.MACRS depreciation and the Section 179 election, explaining why a P&L's depreciation line doesn't move in step with cash spent. — which means this line can show an expense in a month where no cash actually left the business, and vice versa the month you bought the equipment.

Don't read a jump in this line as a spending problem to investigate; it's usually the mechanical result of a purchase timing decision made months earlier, and it's one of the clearest examples of why net income and cash in the bank are two different numbers telling you two different things.

What net income tells you about your next tax payment

Net income for the period, annualized or projected across the full year, is the figure your quarterly estimated tax payment should be sized against — the IRS expects payments four times a year, with a safe-harbor based on this year's or last year's total, rather than one number guessed in April 5Ref 5Internal Revenue Service (2026).Estimated taxes.That estimated tax is due quarterly with safe-harbor rules, the standard the P&L's net income figure is sized against..

A month where net income looks unusually strong because of one large claim finally paying, not because of a real change in the practice, is exactly the kind of number that leads to over- or under-funding the tax set-aside if you react to it in isolation — which is the case for reading several months together rather than any single one.

Benchmarking net income and your own pay against outside data

Once you're reading the P&L consistently, it's worth checking your own compensation line, or the profit left for you as an owner, against published wage data for comparable roles — not as a target to hit, but as a sanity check that a very low or very high number relative to peers has an explanation. Federal wage data for behavioral health roles is public and free to check against your own numbers 6Ref 6U.S. Bureau of Labor Statistics (2025).Occupational Employment and Wages: Substance Abuse, Behavioral Disorder, and Mental Health Counselors.Official wage distributions for behavioral health counselors, used as a public benchmark for an owner's own compensation line..

the annual budget in an afternoon is where this kind of benchmarking has more room to matter — a once-a-year planning exercise rather than a monthly check — and two a/r numbers is worth reading alongside this if your net income ever looks inconsistent with how busy the practice actually felt, since unpaid claims are the most common reason those two impressions diverge. the practice reserve is the other side of this: what net income each month should be building toward, not just reporting on.