Working Capital: Definition, Formula, Examples & Why It Matters
Current assets minus current liabilities: your cushion for near-term bills, or a gap.
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From the definition to funding a gap, in order
If a gap does need funding, working capital financing sets out the structures, including a business line of credit.
- Current assets − current liabilities
- Ratio: current assets ÷ current liabilities
- Financing fixes timing, not margin
Rates, factor rates, fees and terms are set by the funding provider that makes your offer and are disclosed in that provider's agreement. Figures on this page are illustrative ranges from providers in our network, not offers. The balance-sheet figures in part 3 are an accounting illustration, not an offer.
Part 1. What is working capital?
One subtraction, and almost every useful question about a small business's near-term health sits downstream of it.
Working capital is current assets minus current liabilities. Current means inside one year: an asset expected to turn into cash within a year, a liability falling due within a year. The result is a dollar amount, the cushion between what is coming in and what is already committed.
It is also called net working capital, which means the same thing. It is the capital that works in the business day to day, as distinct from the fixed capital tied up in buildings, vehicles and machinery.
Current assets
- Cash and equivalents
- Accounts receivable not yet paid
- Inventory and work in progress
- Prepaid expenses
What each includes
- Cash and equivalents: the bank balance, money-market holdings
- Accounts receivable: invoiced work customers have not paid for yet
- Inventory: stock, raw materials, work in progress
- Prepaid expenses: insurance, rent or software paid in advance
Current liabilities
- Accounts payable and accruals
- Debt payments due within a year
- Short-term borrowing
- Deferred revenue
What each includes
- Accounts payable and accruals: supplier bills, wages, payroll and sales tax
- Payments due in the next twelve months on any debt
- Short-term borrowing: drawn lines, overdrafts, advances
- Deferred revenue: customer deposits for work not yet done
The two lines that cause the confusion
Inventory counts in full, but it is the slowest current asset and the only one whose value drops when you need to sell fast. Deferred revenue counts as a liability even though the cash is already in your account, because you owe the work. A business paid upfront for a project it has not started looks cash-rich and is not.
Part 2. How is working capital calculated, and what is the ratio?
Two calculations come off the same two totals and answer different questions. You need both.
Subtract
Working capital
Current assets − current liabilities. A dollar amount that answers "how much room do I have?"
Divide
Working capital ratio
Current assets ÷ current liabilities, also called the current ratio. A multiple that answers "how thin is that room for a business this size?"
The same cushion can be comfortable for a two-van cleaning company and dangerously thin for a distributor turning over that much each month.
Narrow
Operating working capital
Receivables + inventory − payables, with cash and short-term debt left out. It isolates the money your own trading cycle ties up, the part you can shorten without borrowing.
Changes in working capital is the fourth idea, and the one that warns earliest. It is this quarter's figure minus last quarter's. A rising figure means the business is absorbing cash into receivables and inventory; a falling one means it is releasing cash or running down its cushion.
Part 3. A worked example, from balance sheet to answer
A wholesale distributor closes the month with these balances. The arithmetic takes a minute; reading it takes longer.
Lay the current assets beside the current liabilities, then subtract and divide.
Illustrative example, not an offer. The figures are invented to show the method.
Current assets
- Line 1
- Cash: $18,000
- Line 2
- Accounts receivable: $146,000
- Line 3
- Inventory: $92,000
- Line 4
- Prepaid insurance: $4,000
- Total
- $260,000
Current liabilities
- Line 1
- Accounts payable: $121,000
- Line 2
- Payroll and payroll taxes due: $34,000
- Line 3
- Next twelve months of equipment payments: $48,000
- Line 4
- Customer deposits: $17,000
- Total
- $220,000
Working capital = $260,000 − $220,000 = $40,000. Ratio = $260,000 ÷ $220,000 = 1.18.
Positive, so the business clears the test on paper. Now read what the number is made of, which is where the real position lives. Only the cash line is money. The inventory takes weeks to sell, and these customers pay their invoices later than the suppliers expect to be paid.
The cushion is real, but almost all of it is illiquid, and the gap between collecting late and paying early reopens every month. That is the shape of a timing problem, and part 7 shows how to size one.
Before any new payment is added, test it against the worst weeks of the cycle, not the average month. The business loan calculator does the payment arithmetic, and the debt service coverage ratio is the same test from the provider's side.
Decisions from some providers the same day, depending on the provider. Subject to provider approval and document turnaround.
Part 4. What does the working capital ratio tell you?
A ratio above one says the assets maturing inside the year exceed the obligations falling due inside it. At or below one, something has to go right for the year to close cleanly.
Convention treats a ratio comfortably above one as healthy, and this is where a lot of published advice overreaches: it quotes a target band as though it applied to every business. A grocer sells its stock in days and can run on a thin ratio safely; a manufacturer carrying months of work in progress needs a much thicker one to be equally safe. Three things make a ratio readable.
- 1
Composition
A ratio built on cash is not the same as one built on slow inventory and ageing receivables. Split current assets into cash, receivables and inventory before you read the number.
- 2
Trend
Four quarters of your own figures side by side say more than any benchmark. A ratio that has fallen three quarters running is a worse sign than one that is low and stable.
- 3
Trade
Compare yourself with businesses that collect and pay on roughly your terms, or do not compare at all.
Is a very high ratio good news?
Not automatically. It can mean a pile of inventory that is not selling, or receivables nobody is chasing: cash locked in the business rather than working in it.
Part 5. Is a working capital gap a profitability problem?
This is the expensive distinction on the page, because financing bridges one of them and deepens the other.
A working capital gap
Profitable, but cash arrives after it leaves, in a cycle. Fix it with timing: terms, collections, inventory turns or financing that bridges the weeks.
A profitability problem
Cash shrinks busy or quiet: the price does not cover delivery, so more volume loses more. Fix pricing, costs or customers, not a payment.
The test takes an afternoon. Pull the last several months and ask whether the shortfall moves with a cycle you can name (a season, a contract, a large purchase, a slow payer) or appears in every month regardless of how much you sold. If it is in every month, the number to examine is your gross margin per job, not your financing options.
There is an honest middle case: a business that is thinly profitable and has a timing gap. There, financing is defensible only if the money produces revenue or protects revenue already earned, at a size the weakest week can carry.
Part 6. What causes a working capital gap?
Each cause has its own shape in time, and the shape, not the size, is what later decides which structure fits.
| Cause | What it looks like | Its shape in time |
|---|---|---|
| Seasonality | Stock and staff bought in one part of the year, revenue earned in another | A predictable trough, the same months each year |
| Terms mismatch | Suppliers on short terms, customers on long ones | A recurring hole that never closes on its own |
| Growth | More inventory, payroll and receivables before any of it is collected | A widening gap that moves with volume |
| A receivable that will not pay | One large invoice goes late or bad and takes the month's cushion with it | A one-off shock, sometimes with a long tail |
| Inventory cycle | Money sits in stock longer than the payables allow | A slow, structural drag, often invisible until it bites |
| A capital purchase paid from cash | Equipment or a fit-out bought out of operating cash | A sudden step down, with no cycle to recover it |
Seasonality
Stock and staff bought in one part of the year, revenue earned in another
Shape in time: A predictable trough, the same months each year
Terms mismatch
Suppliers on short terms, customers on long ones
Shape in time: A recurring hole that never closes on its own
Growth
More inventory, payroll and receivables before any of it is collected
Shape in time: A widening gap that moves with volume
A receivable that will not pay
One large invoice goes late or bad and takes the month's cushion with it
Shape in time: A one-off shock, sometimes with a long tail
Inventory cycle
Money sits in stock longer than the payables allow
Shape in time: A slow, structural drag, often invisible until it bites
A capital purchase paid from cash
Equipment or a fit-out bought out of operating cash
Shape in time: A sudden step down, with no cycle to recover it
Growth is the cause owners least expect, because every indicator looks good while the cash position deteriorates. And a capital purchase paid out of operating cash is a self-inflicted gap: a long-lived asset is usually better financed over its working life, which is what equipment financing is for.
Seasonal businesses are the clearest legitimate case, and the clearest case for arranging capacity before the trough rather than during it.
Part 7. How much working capital do I actually need?
The two questions have different answers, and the second is usually larger. Work out the first before anyone offers you the second.
- 1
Build the weekly cash view
Expected collections and known payments, week by week, one quarter ahead. Weekly, not monthly: a monthly view hides that payroll lands twice and rent once.
- 2
Find the deepest cumulative point
Not the biggest single week's shortfall, but the lowest point the running balance reaches. That is the hole.
- 3
Add the buffer you will actually need
For the collection that slips and the repair nobody budgeted. A gap sized exactly to the forecast is sized to the one version of the quarter that does not happen.
- 4
Decide how long you need it for
Five weeks and nine months are different problems; the structure should match the duration rather than the amount.
- 5
Test the payment against your weakest week
If it does not clear at the bottom of the cycle, the amount is wrong, the structure is wrong, or the answer is not financing.
For a business like the distributor in part 3, a quarter that nets out almost flat can still dip well below zero for several weeks while two payroll runs and a seasonal purchase land before the receivables do. The need is that dip, for those weeks, plus a buffer, not the total of the current liabilities and not the annual turnover.
Refresh the weekly view every month, and write down what the money is for in a single line a stranger could check. Both are also what a provider asks for.
Part 8. How can I close a gap without taking on a payment?
These are slower than financing, and they are not alternatives to it: doing them makes any financing smaller.
Bring the cash in sooner
- Collect faster. Invoice on completion, chase on a schedule.
- Take deposits before the cost lands.
One more lever
- State payment terms on every invoice: days of sales outstanding is a large lever.
- Turn inventory over faster. Order smaller and more often where your supplier allows it.
Let the cash out later
- Use your full terms. Ask suppliers, in writing.
- Separate the capital purchase from operating cash.
One more lever
- Watch the direction monthly. The change in the figure is the early warning; the level is the symptom. Suppliers often allow longer than the habit in your payables ledger.
Part 9. Which structure suits a gap of each shape?
Only once you know the cause, the size and the duration does the financing question have an answer.
Working capital financing is an umbrella rather than a product. Working capital financing from providers in our network comes in several forms (term loans, lines of credit and revenue-based financing), each with its own cost structure, explained on the product pages linked below. This table is only the routing.
| The gap you have | The structure that usually fits | Why |
|---|---|---|
| A recurring timing gap that opens and closes | A business line of credit | Standby capacity you draw and repay as the cycle turns |
| A known one-off need with a known cost | A business term loan or a short-term loan | A fixed schedule that ends near the point the need is over |
| Receivables that pay slowly from creditworthy customers | Invoice factoring or accounts receivable financing | The cash follows the invoice, so it grows with sales |
| Urgent need, card-heavy or daily-deposit revenue, credit weaker than deposits | A merchant cash advance, a purchase of future receivables rather than a loan, priced with a factor rate | Decided mainly on deposits, with remittances taken from them |
| An inventory buying cycle | A line of credit, sized to the cycle | The limit is reused each cycle rather than arranged again |
| A long-lived asset bought out of cash | Equipment financing | Matches the payment to the working life of the asset |
| A gap caused by margin rather than timing | None of the above | A payment on a loss deepens it on a fixed date |
A recurring timing gap that opens and closes
Why: Standby capacity you draw and repay as the cycle turns
A known one-off need with a known cost
A business term loan or a short-term loan
Why: A fixed schedule that ends near the point the need is over
Receivables that pay slowly from creditworthy customers
Invoice factoring or accounts receivable financing
Why: The cash follows the invoice, so it grows with sales
Urgent need, card-heavy or daily-deposit revenue, credit weaker than deposits
A merchant cash advance, a purchase of future receivables rather than a loan, priced with a factor rate
Why: Decided mainly on deposits, with remittances taken from them
An inventory buying cycle
A line of credit, sized to the cycle
Why: The limit is reused each cycle rather than arranged again
A long-lived asset bought out of cash
Why: Matches the payment to the working life of the asset
A gap caused by margin rather than timing
None of the above
Why: A payment on a loss deepens it on a fixed date
Capital Gurus is not a lender. Rates, fees and terms are set by the funding provider and disclosed in your agreement. Amounts depend on the funding provider, and each structure's cost is explained on its own page.
Key takeaways
- 1
Working capital is current assets minus current liabilities; the ratio divides the same two totals.
- 2
Read what the number is made of: a cushion in slow inventory is not a cushion in cash.
- 3
The change from quarter to quarter warns earlier than the level does.
- 4
Separate a timing gap from a margin problem before you look at financing.
- 5
Size the need from the deepest point of a weekly cash view, plus a buffer.
- 6
Match the structure to the shape and duration of the gap, not to the size of the limit.
- 7
Test every proposed payment against your weakest week, not your average month.
Frequently asked questions
In short
Working capital is current assets minus current liabilities: what a business owns that will turn into cash within a year, less what it owes within the same year. A positive figure is the cushion for near-term bills, a negative one is a gap, and what the number is made of matters as much as its size.
What is working capital, in simple terms?
Working capital is what a business owns that should become cash within a year (cash, receivables, inventory, prepaid costs) minus what it owes within the same year: supplier bills, payroll and taxes due, the next twelve months of debt payments and customer deposits. Subtract the second total from the first. A positive answer is your cushion; a negative one is your gap.
What is the formula for working capital?
Working capital equals current assets minus current liabilities, and both totals come straight off the balance sheet. The working capital ratio divides current assets by current liabilities instead of subtracting. The subtraction gives a dollar amount, so it tells you how big the cushion is. The division gives a multiple, so it tells you how thin the cushion is relative to the business.
Does working capital include cash?
Yes. Cash and cash equivalents are current assets, so they are included in the standard calculation. Operating working capital is the exception: it leaves out cash and short-term debt on purpose, to show only the receivables, inventory and payables that the trading cycle itself produces. Both are useful, so say which one you mean when you quote a figure to a provider or an accountant.
What is a good working capital ratio?
Convention treats a ratio comfortably above one as healthy and anything at or below one as a warning, but the benchmark varies so much by trade that a single target is close to useless. A grocer that sells its stock in days and a manufacturer carrying months of work in progress cannot be judged on the same multiple. Compare yourself with your own last four quarters first.
What is the difference between working capital and cash flow?
Working capital is a snapshot: a position measured on one date from the balance sheet. Cash flow is a film: money actually moving in and out over a period. A business can show healthy working capital and still miss payroll, because an invoice nobody has paid yet counts as a current asset. That is why the two have to be read together, never one alone.
What causes a working capital gap?
Four causes cover many cases. Seasonality, where you spend in one part of the year and earn in another. A terms mismatch, where suppliers want paying faster than customers pay you. Growth, which consumes cash before it produces any. And a large receivable going late or bad. Each has a different shape in time, and the shape is what decides which financing structure fits.
Can financing fix negative working capital?
It can bridge a timing problem, and it cannot repair an unprofitable one. If the gap comes from a season, a terms mismatch, growth or a late receivable, financing buys the weeks until the cash arrives. If it comes from prices that never covered the cost of delivery, a payment schedule lands on top of the original problem and the hole deepens on a fixed date.
What is operating working capital?
Operating working capital is accounts receivable plus inventory minus accounts payable: the working capital locked inside the trading cycle, with cash and short-term debt left out. It answers a narrower question than the standard figure: how much money your own operations tie up between paying for something and being paid for it. Shortening that cycle releases cash without borrowing anything.
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