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Working Capital Calculator

Current assets minus current liabilities gives working capital, plus the current ratio — a fast read on whether the business can cover what's due soon. Your own balance-sheet lines.

Working capital

Short-term assets against short-term bills

$
$
→ Your numbers
Working capital
$30k
Current ratio
Above 1.0× means assets cover liabilities
1.60×
Working capital = Current assets − Current liabilities · Current ratio = assets ÷ liabilities
——The formula

Working Capital = Current Assets − Current Liabilities. Current Assets include cash, accounts receivable, inventory, and other assets expected to be converted to cash or used within one year. Current Liabilities include accounts payable, short-term debt, accrued expenses, and other obligations due within one year. The Current Ratio = Current Assets ÷ Current Liabilities. Working capital measures the dollar buffer a business has to meet short-term obligations; a positive value suggests it can cover its near-term debts, while a negative value indicates potential liquidity stress. The current ratio normalizes this by dividing assets by liabilities, giving a proportion: a ratio above 1 means assets exceed liabilities, below 1 means the opposite. Both metrics rely on accurate classification of current versus non-current items—mislabeling a long-term loan as short-term distorts the calculation. They are calculated this way because they capture the firm's ability to pay off debts due within the operating cycle without needing to sell fixed assets or raise external capital.

——Worked examples

Boutique Retail Store

A boutique has current assets of $50,000 (cash $10,000, accounts receivable $5,000, inventory $35,000) and current liabilities of $30,000 (accounts payable $25,000, short-term debt $5,000). Working capital = $50,000 - $30,000 = $20,000. Current ratio = $50,000 / $30,000 = 1.67. This positive working capital and ratio above 1 indicate the store can cover its upcoming bills, though inventory-heavy assets might take time to convert to cash.

Software Startup

A software startup has current assets of $200,000 (cash $150,000, accounts receivable $40,000, prepaid expenses $10,000) and current liabilities of $250,000 (accounts payable $50,000, deferred revenue $100,000, short-term debt $100,000). Working capital = $200,000 - $250,000 = -$50,000. Current ratio = $200,000 / $250,000 = 0.8. The negative working capital and ratio below 1 signal a liquidity risk; the startup owes more than it has in liquid assets, possibly relying on future revenue to pay debts.

Manufacturing Company

A manufacturer has current assets of $1,200,000 (cash $100,000, accounts receivable $400,000, inventory $700,000) and current liabilities of $800,000 (accounts payable $500,000, short-term debt $200,000, accrued wages $100,000). Working capital = $1,200,000 - $800,000 = $400,000. Current ratio = $1,200,000 / $800,000 = 1.5. This positive working capital and ratio above 1 suggest adequate liquidity, but the high inventory component means the firm needs steady sales to convert goods to cash.

——How to read the result

A positive working capital is generally desirable because it shows the business can cover its short-term obligations with short-term assets. A negative value may indicate potential insolvency, but it is not always a crisis—some retailers with rapid inventory turnover can operate with negative working capital. The current ratio offers a normalized view: a ratio above 1 is typically considered healthy, but a very high ratio (e.g., above 2 or 3) might mean inefficient use of assets (too much cash or inventory). A ratio below 1 suggests the company might struggle to pay short-term debts. However, these numbers vary widely by industry; for instance, utilities often have low ratios due to steady cash flows, while capital-intensive industries may have higher ratios. The key principle is consistency: trends over time matter more than a single snapshot. Always pair working capital with other liquidity measures like the quick ratio, which excludes inventory, for a fuller picture. No specific industry averages are provided here because they depend on the business model, size, and economic conditions.

——Common mistakes

A common mistake is including long-term assets or liabilities in the calculation, such as equipment or mortgages due beyond one year—these distort the short-term focus. Another error is misclassifying inventory: if it is obsolete or slow-moving, its realizable value may be far below cost, overstating current assets. Businesses also forget to include deferred revenue as a current liability, which can understate obligations. Edge cases include companies with seasonal fluctuations—working capital may be negative during low seasons but positive in peak periods, so a single period’s number can be misleading. Additionally, a high current ratio from excessive inventory or receivables may mask poor cash flow, as these assets are not immediately liquid. Finally, using working capital alone ignores the quality of assets; for example, a firm with large, uncollectible receivables may appear liquid but face cash shortages.

——Glossary
Current Assets
Assets expected to be converted to cash, sold, or consumed within one year or the operating cycle, whichever is longer.
Current Liabilities
Obligations that are due to be settled within one year or the operating cycle, using current assets or creating other current liabilities.
Current Ratio
A liquidity ratio calculated as current assets divided by current liabilities, measuring the ability to pay short-term debts.
Quick Ratio
A stricter liquidity measure that excludes inventory from current assets, calculated as (cash + marketable securities + accounts receivable) divided by current liabilities.
Operating Cycle
The average time it takes a business to purchase inventory, sell it, and collect cash from customers, typically used to define the period for current items.
——FAQ

What is a good working capital number?

There is no single good number; it depends on the industry and business size. A positive number is generally healthy, but the key is to compare it to your own historical trends and industry norms.

Can working capital be negative and still be okay?

Yes, in some cases. Retailers or fast-moving consumer goods companies with high inventory turnover can operate with negative working capital because they collect cash from sales before paying suppliers.

How do I calculate working capital if I only have the balance sheet?

Subtract total current liabilities from total current assets using the balance sheet's current sections. Both are typically listed separately.

What's the difference between working capital and the current ratio?

Working capital is a dollar amount showing the absolute buffer, while the current ratio is a proportion that allows comparison across companies of different sizes.

Does working capital include cash?

Yes, cash is a current asset and is included in both working capital and the current ratio.

How often should I calculate working capital?

At least quarterly, but monthly or even weekly is better for businesses with volatile cash flows. Consistency helps spot trends.

What if my current ratio is too high?

A very high ratio (e.g., above 3) might indicate idle cash or excessive inventory, which could be used more productively elsewhere, such as investing in growth.

Is inventory always included in current assets?

Yes, but if inventory is obsolete or hard to sell, its value may be overstated. Consider using the quick ratio for a more conservative view.

From numbers to a business

The bundle's bookkeeping templates keep assets and liabilities current so this number is always accurate.

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