What is working capital? A simple guide with examples

Working capital is the money a business has available for day-to-day operations. It's calculated as current assets minus current liabilities. Positive working capital means a company can cover its short-term obligations and invest in growth; negative working capital can signal cash-flow strain.

If you run a growing business, working capital is the number that decides whether you can say yes to your next big order. It sits behind every restock, every seasonal push and every payroll run. Here's how to calculate it, read whether yours is healthy, and improve it when it's tight.

What is the working capital formula?

The working capital formula is current assets minus current liabilities:

Working capital = current assets − current liabilities

That's it. Add up everything the business can turn into cash within 12 months, subtract everything it owes within 12 months, and the difference is your working capital.

Here's a worked example for an ecommerce brand heading into a busy season:

Working capital = $150,000 − $80,000 = $70,000. This brand has $70k available to fund operations after covering its short-term bills.

What counts as current assets and current liabilities?

Current assets are things a business can convert to cash within 12 months. Current liabilities are debts due within the same period. The two-column view below shows what usually sits on each side.

Inventory is the line that catches most product businesses out. Stock counts as a current asset, but it isn't cash until you sell it. A warehouse full of goods can leave you asset-rich and cash-poor at the exact moment you need to reorder.

How do you calculate working capital, step by step?

Calculating working capital takes 3 steps. Pull the figures straight from your balance sheet.

1. Total your current assets. Add cash, accounts receivable, inventory, prepaid expenses and any short-term investments.
2. Total your current liabilities. Add accounts payable, accrued expenses, short-term debt and the current portion of any long-term loans.
3. Subtract liabilities from assets. Current assets minus current liabilities gives your working capital.

Using the example above: $150,000 in current assets minus $80,000 in current liabilities gives $70,000 in working capital. If you want to model how financing would change that position, our business loan calculator lets you run the numbers.

What's the difference between net working capital and working capital?

In practice, there's no difference. Both mean current assets minus current liabilities. "Net working capital" adds the word net for emphasis or accounting clarity, but the calculation is identical.

One related term is worth knowing. Operating working capital is a narrower measure that strips out cash and short-term debt to focus only on day-to-day operating items: receivables, inventory and payables. It shows how much cash your core operations tie up, independent of how you're financed. For most owners, plain working capital is the number to watch day to day.

What is the working capital ratio, and what counts as good?

The working capital ratio is current assets divided by current liabilities. A ratio between 1.2 and 2.0 is generally considered healthy: you can cover your short-term obligations with room to spare.

Working capital ratio = current assets ÷ current liabilities

Our ecommerce example scores 150,000 ÷ 80,000 = 1.9, comfortably in the healthy band. Below 1.0 means liabilities outweigh assets and you may struggle to pay short-term bills. Much above 2.0 can mean cash or inventory sitting idle rather than being put to work.

The working capital ratio and the current ratio are the same calculation, just under two names. Major lenders such as J.P. Morgan and Bank of America publish similar benchmarks, though the ideal figure varies by industry. A grocery business runs healthily on a lower ratio than a manufacturer, because its stock turns over far faster.

What do positive and negative working capital mean?

Positive working capital means current assets exceed current liabilities: you can pay your short-term bills and still have cash to invest. Negative working capital means the reverse, and it can signal cash-flow strain.

Negative working capital isn't always bad, though. A few business models run on it by design, collecting from customers before paying suppliers, so they operate comfortably with liabilities ahead of assets. For most small and growing businesses, a sustained negative position is worth acting on. Often it reflects a timing gap rather than a failing business, and financing can bridge that gap while you fix the underlying cycle.

What is the working capital cycle?

The working capital cycle is the time it takes to turn cash into inventory, inventory into sales, and sales back into cash. The shorter the cycle, the faster your money comes back to you.

You'll sometimes see it measured in working capital days: days inventory outstanding plus days sales outstanding, minus days payable outstanding. A long cycle ties up cash in stock and unpaid invoices, which is why fast-growing and seasonal brands so often feel a squeeze even when sales are strong. If you want to go deeper on shortening yours, read our guide to the cash conversion cycle and working capital management.

What are some working capital examples by business type?

Working capital looks different depending on what a business sells. The mechanics are the same; the pressure points move.

• Ecommerce and retail. Cash gets locked up in inventory months before it sells, and seasonal peaks make the gap wider. These businesses tend to carry high inventory and need working capital to reorder ahead of demand.
• Wholesale. Large purchase orders and net-30 or net-60 payment terms create long receivable cycles, so cash can be tied up waiting on invoices.
• SaaS and service businesses. These carry little or no inventory, so working capital pressure comes from payroll and upfront costs rather than stock. Subscription revenue often smooths the cycle.

We mapped how these dynamics show up across ecommerce unit economics in our Wayflyer matrix on unit economics and working capital.

Why does working capital matter for small businesses?

Working capital matters because it decides whether a business can act on opportunity. A profitable company can still run out of cash if too much is tied up in stock and unpaid invoices, and small businesses feel that faster than anyone.

Strong working capital lets you reorder before you sell out, negotiate better supplier terms, and ride out a slow month without panic. Weak working capital forces the opposite: turning down orders, delaying restocks and missing the seasonal windows that drive a year's growth. For a growing brand, managing working capital well is often the difference between scaling smoothly and stalling.

How much working capital do you need?

There's no universal number, but you can size your peak need with a simple framework. Working capital demand spikes when cash goes out for inventory and marketing well before the resulting revenue comes back in:

Peak working capital = peak inventory cost + peak marketing spend + (1.5 × normal monthly fixed costs)

The 1.5× on fixed costs covers the lag between paying for stock and collecting the revenue it generates. Take a brand expecting $1m in peak-season sales, with COGS at 50% and marketing at 20%: that's $500k of inventory plus $200k of marketing, plus 1.5× its normal monthly burn, which typically ties up $750k–$900k of working capital at the peak.

This is exactly the squeeze seasonal brands describe. King Kong Apparel, a fitness-apparel brand, sees a huge share of its sales land in one peak window but has to buy the stock long before then:

We just didn't have the working capital to be able to buy the inventory we needed. Especially since our business is a bit seasonal — the November/Black Friday and December period is probably 40% of our sales. We just needed more stock than we had cash for.

That gap between paying suppliers and getting paid is where working capital does its work, and where working-capital financing can help. See how King Kong Apparel unlocked growth with Wayflyer.

How can you improve (and finance) your working capital?

You improve working capital by freeing up cash that's currently trapped in the cycle. Start with the operational levers, then consider financing to bridge any gap that's left.

• Collect receivables faster. Tighten payment terms, invoice promptly and chase overdue accounts.
• Manage inventory tightly. Hold less slow-moving stock and forecast demand so cash isn't sitting on shelves.
• Extend payables sensibly. Negotiate longer terms with suppliers without damaging the relationship.
• Cut unnecessary costs. Trim overheads that don't drive revenue.

Sometimes the operational levers aren't enough on their own, especially when a growth opportunity lands before the cash does. That's where working-capital financing comes in. If a temporary gap is holding you back, say cash tied up in inventory ahead of a busy season, financing can bridge it. Providers like Wayflyer offer flexible financing built for ecommerce and small businesses, with repayments that flex to your revenue rather than a fixed schedule.

There's more than one option here. A working capital loan gives you a lump sum to cover a short-term need, while revenue-based financing ties repayments to your sales. For a closer look at where to focus capital for the biggest return, see our guide to the profit levers that drive consumer-brand growth.

Frequently asked questions

What is working capital in simple terms?

Working capital is the cash a business has left after covering its short-term bills. You work it out by subtracting current liabilities from current assets. It's the money available to run day-to-day operations: paying suppliers, buying stock and covering payroll. Positive working capital means you can meet obligations and still fund growth.

What are three examples of working capital?

Three common working capital items are cash in the bank, accounts receivable (money customers owe you) and inventory you plan to sell within a year. On the other side, current liabilities like accounts payable and short-term debt reduce it. Working capital is what's left once you subtract those liabilities from your current assets.

How do I calculate working capital?

Subtract your current liabilities from your current assets. Current assets include cash, accounts receivable and inventory. Current liabilities include accounts payable, accrued expenses and short-term debt. For example, $150k in current assets minus $80k in current liabilities gives you $70k in working capital.

How much working capital do you need?

There's no single figure, but you can size your peak need with a simple framework: peak inventory cost + peak marketing spend + 1.5× your normal monthly fixed costs. A brand expecting $1m in peak-season sales at 50% COGS and 20% marketing would tie up roughly $750k–$900k at the peak. The 1.5× covers the lag between paying for stock and collecting the revenue it generates.

What is a good working capital ratio?

A working capital ratio (current assets ÷ current liabilities) between 1.2 and 2.0 is generally considered healthy. Below 1.0 means you may struggle to cover short-term obligations. Much above 2.0 can suggest cash or inventory sitting idle rather than being put to work. The right number varies by industry.

What's the difference between working capital and net working capital?

In practice, there's no difference. Both mean current assets minus current liabilities. "Net working capital" simply adds the word net for emphasis or accounting clarity. Operating working capital is a slightly narrower measure that strips out cash and short-term debt to focus on day-to-day operating items.

Is negative working capital bad?

Not always. Negative working capital means current liabilities exceed current assets, which can signal cash-flow strain. But some businesses run on it by design, collecting from customers before paying suppliers. For most small and growing businesses, though, a sustained negative position is worth addressing.

What is the working capital cycle?

The working capital cycle is the time it takes to turn cash into inventory, inventory into sales, and sales back into cash. A shorter cycle frees up cash faster. A longer cycle ties up more money in stock and unpaid invoices, which is why fast-growing and seasonal brands often feel a working capital squeeze.