To calculate working capital, subtract your current liabilities from your current assets: Working Capital = Current Assets − Current Liabilities. Current assets are what you can turn into cash within about 12 months (cash, accounts receivable, and inventory), and current liabilities are what you owe within that same window (accounts payable, the coming year of loan payments, taxes, and accrued expenses). If a business holds $180,000 in current assets and owes $120,000 in current liabilities, its working capital is $60,000. That single figure tells you whether you can cover the next year of obligations out of near-term resources, and it is the number lenders, suppliers, and investors reach for first when they size up your financial health.
This guide takes you past the one-line formula: how to pull each input off your balance sheet correctly, the ratios that put your number in context, how much working capital your business actually needs, and what to do when the math shows a gap.
Key takeaways
- Working capital = current assets − current liabilities; the result shows whether you can cover the next 12 months of obligations from near-term resources.
- Always include the current portion of long-term debt (this year's principal on multi-year loans) in current liabilities, or your number will look healthier than it is.
- A current ratio of roughly 1.2 to 2.0 is commonly viewed as healthy; below 1.0 is a warning sign and far above 3.0 may mean idle cash or excess inventory.
- The quick (acid-test) ratio strips out inventory and prepaids — a business can show positive working capital yet still fail this stricter cash test.
- How much working capital you need is driven by your cash conversion cycle: the longer your money is tied up between spending and collecting, the more you need on hand.
- The monthly trend matters more than any single snapshot — a positive but shrinking number is often a louder alarm than a slightly negative but rising one.
- Revenue-based financing approval leans on bank deposits and monthly revenue more than credit score: minimums around $10,000, FICO 500+, funding often in 24–48 hours, never guaranteed.
The working capital formula, broken down
The formula itself is simple. The accuracy lives in what you classify as "current." The word current means convertible to cash, or payable, within one operating cycle, which for most small businesses is 12 months.
Working Capital = Current Assets − Current Liabilities
Everything on both sides of that equation comes from the top section of your balance sheet. Here is what belongs in each bucket:
Current assets (things becoming cash within a year):
- Cash and cash equivalents — checking, savings, money-market balances
- Accounts receivable — invoices customers still owe you (net of amounts you doubt you'll collect)
- Inventory — raw materials, work in progress, and finished goods you expect to sell
- Prepaid expenses — insurance, rent, or software you've already paid for and will use up this year
- Short-term investments — marketable securities you could liquidate quickly
Current liabilities (things you owe within a year):
- Accounts payable — unpaid supplier and vendor bills
- Short-term debt — lines of credit, and the portion of any term loan or advance due within 12 months
- Accrued expenses — wages, payroll taxes, and utilities earned or incurred but not yet paid
- Taxes payable — sales tax and income tax owed in the near term
- Current portion of long-term debt — this year's principal on multi-year loans
Two items trip people up. First, the current portion of long-term debt: a five-year loan is a long-term liability, but the next 12 months of principal counts as current and must be included. Leave it out and your working capital looks healthier than it is. Second, factor or merchant-advance obligations due within the year belong in current liabilities too, even when the paperwork doesn't call them a "loan."
A step-by-step calculation with real numbers
Below is a worked example for a hypothetical distributor. The figures are rounded and illustrative, shown here for example only, but the structure matches a standard balance sheet.
| Balance-sheet line (example) | Amount |
|---|---|
| Current assets | |
| Cash and equivalents | $48,000 |
| Accounts receivable | $72,000 |
| Inventory | $85,000 |
| Prepaid expenses | $15,000 |
| Total current assets | $220,000 |
| Current liabilities | |
| Accounts payable | $64,000 |
| Accrued wages & taxes | $28,000 |
| Line of credit balance | $40,000 |
| Current portion of term loan | $22,000 |
| Total current liabilities | $154,000 |
The steps:
- Add up current assets: $48,000 + $72,000 + $85,000 + $15,000 = $220,000
- Add up current liabilities: $64,000 + $28,000 + $40,000 + $22,000 = $154,000
- Subtract: $220,000 − $154,000 = $66,000 in working capital
This business has a $66,000 cushion. But notice how much of that is tied up in inventory ($85,000) and receivables ($72,000), not cash. A positive working capital figure can still hide a cash-flow squeeze if too much of your "current" assets are slow to convert. That distinction is exactly what the ratios in the next section expose.
The ratios that put your number in context
A dollar figure alone doesn't tell you whether $66,000 is comfortable or thin — that depends on your size and obligations. Three ratios turn the raw number into a judgment. Using the example business above:
| Ratio | Formula | Example result | What it tells you |
|---|---|---|---|
| Working capital (current) ratio | Current assets ÷ current liabilities | $220,000 ÷ $154,000 = 1.43 | Overall liquidity; how many times over you can cover short-term debts |
| Quick (acid-test) ratio | (Current assets − inventory − prepaids) ÷ current liabilities | ($220,000 − $85,000 − $15,000) ÷ $154,000 = 0.78 | Liquidity without selling inventory — the stricter cash test |
| Days working capital | (Working capital × 365) ÷ annual revenue | ($66,000 × 365) ÷ $1,200,000 ≈ 20 days | How many days of operations your cushion funds |
Here's why running all three matters. The current ratio of 1.43 looks fine. But strip out inventory and prepaids, and the quick ratio drops to 0.78 — below 1.0, meaning the business couldn't cover its short-term bills from cash and receivables alone if inventory stopped moving. That's the story a single working-capital dollar figure never tells you.
General benchmarks (industry varies widely):
- Current ratio below 1.0 — current liabilities exceed current assets; a warning sign
- Current ratio around 1.2 to 2.0 — commonly considered a healthy operating range
- Current ratio well above 2.0 to 3.0 — plenty of cushion, but possibly idle cash or excess inventory that could be put to work
Capital-light service businesses run leaner ratios than inventory-heavy retailers or manufacturers, so compare yourself to your own industry, not a universal target.
Positive, negative, and "too much" working capital
The sign and size of your result each carry a different message.
Positive working capital means current assets exceed current liabilities — you can meet the coming year's obligations from near-term resources with room to spare. This is the goal for most businesses.
Negative working capital means you owe more in the next 12 months than you expect to convert to cash. It isn't always a crisis: some businesses with fast cash cycles and long supplier terms — think high-volume restaurants or subscription companies that collect from customers before paying vendors — run negative working capital by design and stay perfectly solvent. For most small businesses, though, sustained negative working capital signals a genuine shortfall and a scramble to make payroll or pay suppliers.
Excessive working capital is a quieter problem. A ratio far above 3.0 can mean cash sitting idle, receivables you're slow to collect, or a warehouse overstocked with product. That capital could be earning a return, funding growth, or reducing debt instead of sitting still. More working capital is not automatically better; the right amount is enough to operate smoothly with a sensible buffer, and not so much that money goes to waste.
The trend matters more than any single snapshot. Calculate working capital every month and watch the direction. A number that's positive but shrinking each month is often a louder alarm than one that's slightly negative but climbing.
How much working capital does your business actually need?
Lendio and most guides stop at defining the formula. The harder, more useful question is how much you need — and that comes from your operating cycle, the time between paying for inventory or labor and collecting the resulting revenue.
The operating cycle has two parts: how long inventory sits before it sells (days inventory outstanding), plus how long customers take to pay (days sales outstanding). Subtract how long you take to pay your own suppliers (days payable outstanding) and you get the cash conversion cycle — the number of days your own money is tied up before it comes back.
| Component (example seasonal retailer) | Days |
|---|---|
| Days inventory outstanding (inventory sits before selling) | 60 |
| Days sales outstanding (customers take to pay) | 35 |
| Less: days payable outstanding (you take to pay suppliers) | −30 |
| Cash conversion cycle | 65 days |
A 65-day cash conversion cycle means roughly two months of operating costs are tied up at any moment. If this business spends about $90,000 a month running the operation, it needs on the order of $180,000 to $200,000 in working capital just to bridge the gap between spending and collecting — before adding any buffer for a slow month or a large unexpected bill.
The longer your cash conversion cycle and the more seasonal your revenue, the more working capital you need on hand. A consultant paid on delivery needs very little; a manufacturer who buys materials in the spring and collects from retailers in the fall needs a great deal. Calculate your own cycle before deciding whether your working capital is genuinely sufficient.
What to do when the calculation reveals a gap
If your working capital is negative, shrinking, or too small to cover your cash conversion cycle, you have two levers: improve the number from the inside, or bring in outside financing.
Fix it operationally first — these cost nothing:
- Collect receivables faster. Shorten payment terms, invoice the day work is done, and follow up on overdue accounts. Every day you cut from days-sales-outstanding frees cash.
- Negotiate longer supplier terms. Moving from net-15 to net-30 or net-45 keeps cash in your account longer without borrowing a cent.
- Trim slow inventory. Cash trapped in product that isn't selling is working capital you can't use. Discount it and reinvest.
- Reprice or cut low-margin work that consumes cash faster than it returns it.
When operations aren't enough, financing bridges the gap. Common options and how they fit:
- Business line of credit — flexible, draw-as-needed; best for recurring short-term gaps, though approval and limits lean heavily on credit and time in business.
- SBA loans — the lowest rates, but weeks of paperwork and strong-credit requirements make them a poor fit for an urgent shortfall.
- Revenue-based financing / merchant cash advance — funding sized to your monthly revenue and repaid as a share of sales, designed for speed when a bank timeline won't work.
For a business whose calculation shows a near-term gap it needs to close in days rather than weeks, revenue-based financing through a marketplace is often the most realistic path. Approval leans on your bank-deposit history and monthly revenue far more than your credit score, funding amounts typically start around $10,000, FICO scores from 500+ are commonly considered, and funds often arrive within 24 to 48 hours. Because a marketplace shops your file to multiple funders at once, you see more than one option instead of a single take-it-or-leave-it offer. Approval and terms always depend on your actual financials, so no responsible funder can guarantee an outcome in advance.
Qualification reality: what actually gets you funded
If your working-capital math points toward outside financing, it helps to know what a revenue-based funder weighs — because it's different from a traditional bank, and the differences work in favor of many small businesses.
| Factor | Traditional bank loan | Revenue-based / MCA marketplace |
|---|---|---|
| Primary approval driver | Credit score & collateral | Monthly revenue & bank deposits |
| Typical minimum FICO | Often 680+ | Around 500+ |
| Time in business | 2+ years common | Often 6+ months |
| Speed to funding | Weeks | Often 24–48 hours |
| Documentation | Tax returns, financials, plan | Recent bank statements |
In practice, funders look for consistent deposits, a positive average daily balance, few or no negative days, and revenue that comfortably supports the repayment. A thin credit file matters far less than a healthy, steady flow of deposits. That's why a business with a low FICO but strong monthly sales can qualify here when a bank would decline it. None of this is a guarantee — every file is underwritten on its own numbers — but it reframes what "qualified" means for a growing small business.
Put it into practice: your next steps
Working capital is not a once-a-year figure to calculate for a loan application and forget. Treated as a monthly habit, it becomes an early-warning system for cash-flow trouble and a clear signal of when you're ready to grow.
- Pull your latest balance sheet and total your current assets and current liabilities — remembering the current portion of long-term debt.
- Run the three ratios (current, quick, and days working capital) so you see liquidity, not just a dollar figure.
- Calculate your cash conversion cycle to learn how much working capital your specific operating rhythm actually requires.
- Compare need vs. reality. If there's a gap, fix what you can operationally first — faster collections, longer supplier terms, leaner inventory.
- If a gap remains and it's time-sensitive, compare financing options. For fast, revenue-based funding, a marketplace can match your file to multiple funders at once and often fund within a day or two.
Do the calculation this week, then again next month. The trend line will tell you more than any single number — and it will tell you it early, while you still have room to act.
Frequently asked questions
What is the basic formula to calculate working capital?
Working capital equals current assets minus current liabilities. Current assets are cash, accounts receivable, inventory, and other resources you'll convert to cash within about 12 months; current liabilities are accounts payable, accrued expenses, taxes, and any debt due within the same year. If you have $220,000 in current assets and $154,000 in current liabilities, your working capital is $66,000.
What counts as a current asset versus a current liability?
Current assets are anything you expect to turn into cash within a year: cash and equivalents, accounts receivable, inventory, prepaid expenses, and short-term investments. Current liabilities are anything you owe within a year: accounts payable, accrued wages and taxes, lines of credit, and the portion of any longer-term loan due in the next 12 months. That last item — the current portion of long-term debt — is the one most people forget to include.
Is negative working capital always bad?
Not always. Some businesses with fast cash cycles and long supplier terms — such as high-volume restaurants or subscription companies that collect from customers before paying vendors — run negative working capital by design and stay solvent. For most small businesses, though, sustained negative working capital signals a real shortfall and difficulty covering payroll or suppliers. Watch the trend, not just the sign.
What is a good working capital ratio?
For most businesses a current ratio between roughly 1.2 and 2.0 is considered healthy. Below 1.0 means your short-term debts exceed your short-term assets, which is a warning sign. Well above 3.0 can mean cash, receivables, or inventory sitting idle. Benchmarks vary a lot by industry, so compare yourself to similar businesses rather than a universal target, and check the quick ratio too for a stricter cash-only view.
How much working capital does my business need?
It depends on your cash conversion cycle — how long your money is tied up between paying for inventory or labor and collecting revenue. A business with a 65-day cycle spending about $90,000 a month needs roughly two months of operating costs, or on the order of $180,000 to $200,000, just to bridge the gap, before adding a buffer. Calculate your own cycle rather than relying on a rule of thumb.
How is working capital different from cash flow?
Working capital is a snapshot from your balance sheet at a single point in time — what you own short-term minus what you owe short-term. Cash flow is the movement of money in and out over a period. You can have positive working capital and still face a cash crunch if too much of it is tied up in slow-moving inventory or unpaid invoices. Both are worth tracking; together they give a fuller picture of financial health.
What can I do if my working capital is too low?
Start with operational fixes that cost nothing: collect receivables faster, negotiate longer payment terms with suppliers, and trim slow-moving inventory. If a gap remains, financing can bridge it. Options range from a business line of credit to SBA loans to revenue-based financing. The right choice depends on how quickly you need funds and how strong your credit and time in business are.
Can I get working capital financing with a low credit score?
Often yes, through revenue-based financing or a merchant cash advance marketplace, where approval leans on your bank-deposit history and monthly revenue more than your FICO score. Minimums typically start around $10,000, scores from about 500 are commonly considered, and funding often arrives within 24 to 48 hours. Every application is underwritten on its own numbers, so approval and terms are never guaranteed in advance, but steady deposits and consistent revenue matter far more here than a perfect credit file.
