Client trainingVisited 0 of 32 modulesReading your numbers
After this module you can read a profit and loss statement and a balance sheet, explain why the bank balance and the profit never match, and say why your books are kept the way they are.
Watch first, seven minutes: cash versus accrual, the two reports, and the sample clinic, in Nate's words. Then read on.
One question, every month
Did the business get richer or poorer? Accounting is a system for answering that in a way a stranger can check. Everything else, the reports, the software, the terms, is machinery for that one job.
Two reports you will read every month
| Report | Question it answers | Think of it as |
|---|---|---|
| Profit and loss (P&L) | Did we make money this month? | A video of the month |
| Balance sheet | What do we own, what do we owe, and what is left over? | A photograph taken at midnight on the last day |
There is a third, the cash flow statement, that explains why the bank balance moved even though profit said something different. You will see it when it matters. The first two are enough to run a clinic.

A month at Harbor Aesthetics
Read the P&L top to bottom: what came in, what it cost to deliver, what it cost to run the place, what was left.
| Harbor Aesthetics, Profit and Loss, September | Amount |
|---|---|
| Revenue (services delivered and retail sold this month) | 125,000 |
| Injectables (neurotoxin, filler) | 69,000 |
| Laser, light and skin treatments | 33,500 |
| Membership revenue earned this month | 15,000 |
| Retail products | 7,500 |
| Cost of services (the product used up to deliver that revenue) | 28,400 |
| Gross profit | 96,600 |
| Operating expenses (the cost of running the clinic whether or not anyone walks in) | 85,400 |
| Provider wages and commissions | 30,000 |
| Front desk and admin wages | 9,200 |
| Owner salary | 12,500 |
| Payroll taxes and benefits | 5,000 |
| Rent | 8,000 |
| Marketing | 8,300 |
| Equipment lease, software, insurance, utilities, other | 12,400 |
| Earnings before depreciation and interest (EBITDA, Advanced 4) | 11,200 |
| Depreciation (the laser wearing out, spread over its life) | 5,000 |
| Interest on the equipment loan | 1,800 |
| Net income (profit before tax) | 4,400 |
Now the photograph at midnight on September 30. It always balances: what you own equals what you owe plus what belongs to you.
| Harbor Aesthetics, Balance Sheet, September 30 | Amount |
|---|---|
| What we own (assets) | |
| Cash in the operating account | 61,000 |
| Card processor deposits in transit | 9,800 |
| Injectables on the shelf (inventory) | 22,000 |
| Prepaid insurance | 6,500 |
| Equipment, net of depreciation | 238,000 |
| Lease security deposit | 16,000 |
| Total assets | 353,300 |
| What we owe (liabilities) | |
| Credit card balance | 7,400 |
| Payroll taxes and wages owed | 11,900 |
| Sales tax collected, not yet sent in | 1,200 |
| Packages and memberships sold, visits not yet delivered | 41,000 |
| Gift cards outstanding | 6,800 |
| Equipment loan | 176,000 |
| Total liabilities | 244,300 |
| What is left for the owner (equity) | 109,000 |
| Total liabilities and equity | 353,300 |
Cash basis and accrual basis: the one habit
There are two ways to decide when to count a sale. On the cash basis you count it when the money lands. On the accrual basis you count it when you earned it, meaning you delivered the service. A patient buys a six visit laser package for $2,400 in January and comes once a month. On a cash basis January looks wonderful and the next five months look worse than they were. On the accrual basis each month shows $400, which is what happened. Your books are kept on accrual so the P&L tells the truth month to month, and the bank balance is read separately.

Going deeper, if you want to
Every transaction touches two places. Buy $3,000 of neurotoxin on the company card: inventory goes up $3,000 and the card balance goes up $3,000. Use $600 of it on patients: inventory goes down $600 and cost of services goes up $600. Accountants call the two sides debits and credits. You do not need to know which is which. You need to know that when a report looks wrong, the other side of the entry is usually where the mistake lives.
Account numbers tell you where a line lands. Accounts starting with 1 are things you own, 2 are things you owe, 3 is what belongs to you, 4 is revenue, 5 is cost of services, 6 and up are operating expenses. Revenue accounts and cost accounts are set up in pairs (neurotoxin revenue next to neurotoxin product cost) so you can see whether each service is priced right. That pairing is what makes Finance 6 and Operations 3 possible.
Try it yourself
A patient pays $2,400 in January for six laser sessions. On the accrual basis, how much revenue is recorded in January?
$2,400, because the money arrived in January$400, one session's worth, and the rest waits on the balance sheet$0 until all six sessions are doneWhich report answers "what do we own and owe as of today"?
Profit and lossBalance sheetThe bank statementProfit was $4,400 but cash went up $18,000. The most likely reason?
The bookkeeper made an errorPatients prepaid for packages, which is cash in but not yet revenueProfit and cash are always the sameGross profit is
Revenue less every expenseRevenue less the product used to deliver itThe bank balanceWhy are revenue and cost accounts set up in matching pairs by service?
QuickBooks requires itSo you can see whether each service is priced rightTo make the chart longer