Dental practice working capital equals current assets minus current liabilities on the same balance-sheet date. Calculate that amount first, then inspect how much of it consists of usable cash, collectible receivables, supplies, or prepaid expenses. A positive total can coexist with a shortage of cash for an approaching payment.
Working capital = current assets − current liabilities.
The SEC uses this formula and describes the balance sheet as a snapshot at a specific time. It measures the position on that date; it does not establish when every asset will become cash. SEC guide to financial statements
Establish the reporting boundary
Ask the practice's accountant for a closed balance sheet, the supporting schedules, and the accounting basis. Record the entity, included locations, statement date, and preparer. Keep personal savings and assets belonging to a separate real-estate entity outside the practice calculation unless the reporting boundary explicitly includes them.
Check whether the books capture unpaid amounts. Under the cash method, income generally follows receipt and expenses generally follow payment, subject to applicable exceptions. The IRS explains that distinction in Publication 538. If the practice's reporting omits receivables or unpaid obligations, have the accountant prepare a clearly labeled management schedule before treating the result as a complete cushion.
Do not mix a today's-bank-balance screenshot with last month's receivables and an undated vendor list. The components must describe the same cutoff, including correcting entries and payments already posted.
Review what belongs in each side
The SBA's financial glossary includes cash, receivables, inventory, and prepaid expenses among current assets, and describes current liabilities as obligations due within a year. Use the accountant's approved classifications for the actual practice. SBA financial terms
For each reported component, add a practical question:
| Component | Question before relying on it |
|---|---|
| Cash and cash equivalents | Is it reconciled, owned by this entity, and available for ordinary use? |
| Net receivables | Have applicable fee adjustments, credits, and collection allowances been reflected? |
| Supplies or inventory recorded as an asset | Does the recorded amount reflect actual usable stock under the accounting policy? |
| Prepaid expenses | Which future services does the payment buy, and is any refund actually available? |
| Trade payables and accrued expenses | Are received goods, lab work, payroll-related obligations, and other incurred amounts included? |
| Current debt | Which principal amounts belong in current liabilities under the financing terms? |
| Patient credits or advances | What repayment or service obligation remains, and where is it recorded? |
Keep chairs, imaging equipment, goodwill, and other noncurrent assets outside current assets. An unused credit limit is also separate from cash already owned. Ask the accountant about ambiguous restrictions, debt classifications, and patient-credit treatment rather than resolving them by changing spreadsheet labels.
Work through one balance-sheet example
All figures below are hypothetical. Assume the accountant has approved these classifications, including $5,000 of cash that is classified as current but unavailable for routine spending. Net receivables already reflect applicable adjustments and collection allowances.
| Current assets | Amount | Current liabilities | Amount |
|---|---|---|---|
| Cash | $45,000 | Supplier and lab payables | $28,000 |
| Net receivables | $75,000 | Accrued payroll and taxes | $16,000 |
| Supplies recorded as inventory | $8,000 | Short-term borrowing | $12,000 |
| Prepaid expenses | $12,000 | Current portion of other debt | $24,000 |
| — | — | Patient credits and advances | $10,000 |
| Total | $140,000 | Total | $90,000 |
Working capital is $140,000 − $90,000 = $50,000.
That does not mean the owner has $50,000 to distribute. The bank cash is $45,000, of which the example assumes only $40,000 is available for routine spending. Inventory and prepayments support operations but cannot simply fund payroll.
For a separate comparison, available cash plus net receivables totals $115,000. Subtracting the same $90,000 in current liabilities leaves $25,000. Label this exactly as a cash-and-net-receivables comparison, with the exclusions shown. It is a management view, not a replacement for reported working capital or a cash forecast.
Now identify $20,000 of those receivables as collectible but slow to arrive. Excluding that amount from the comparison leaves $5,000. The reported working-capital figure remains $50,000 unless an accounting adjustment is warranted. The timing concern has become visible without silently rewriting the books.
Use the receivables management workflow to investigate those balances. This review needs evidence of collectibility and timing, not a blanket assumption that every older account is worthless.
Recognize transactions that change the form of the cushion
Several actions improve access to cash without increasing working capital. Consider each hypothetical transaction independently, starting from the original example and assuming no fees, interest, gains, or losses:
| Transaction | Cash effect | Working-capital effect |
|---|---|---|
| Collect $10,000 of existing net receivables | +$10,000 | $0: one current asset replaces another |
| Pay $6,000 of recorded supplier payables | −$6,000 | $0: current assets and current liabilities both fall |
| Draw $15,000 of borrowing classified entirely as current | +$15,000 | $0: current assets and current liabilities both rise |
| Buy $18,000 of equipment classified as noncurrent with cash | −$18,000 | −$18,000: cash leaves the current-asset group |
This is why “cash increased” and “working capital improved” are different statements. Borrowing can supply cash while adding an equally large current obligation. Financing with a different maturity profile needs its own classification and repayment review; changing the debt's label does not change its terms.
Likewise, a strong operating profit margin does not establish this balance-sheet amount. Earnings, distributions, purchases, financing, and accounting adjustments can move different parts of the financial statements.
Turn the calculation into an owner decision
At each monthly close, preserve the total and its components beside comparable prior dates. Explain material movements: receivables accumulated, cash funded equipment, current debt increased, or an allowance changed. A larger total built from slower receivables deserves a different response from an increase in unrestricted cash.
Then take the payment-timing question to the 13-week cash forecast. That is where actual receipt assumptions and payment dates test whether the office can meet its commitments.
Finish the working-capital review with four items: the reported amount, assets needing liquidity review, classifications awaiting accountant resolution, and the spending or funding decision that depends on them. Set a practice-specific review threshold with your adviser. The useful cushion is one whose components the owner can explain and whose limitations remain visible.
