Is your business
liquid enough?

Field guide

Net working capital, current ratio, and quick ratio — what they actually measure.

Working capital is the lifeblood of day-to-day business operations. It measures whether a company has enough short-term assets to cover its short-term obligations. Three metrics tell most of the story: Net Working Capital, the Current Ratio, and the Quick Ratio.

Net Working Capital (NWC)

NWC is the simplest measure of short-term liquidity — a raw dollar figure rather than a ratio:

A positive NWC means the company can fund its operations without borrowing. A negative NWC is a warning sign: the company owes more than it currently holds in liquid assets. Sustained negative NWC forces reliance on credit lines or additional financing to pay suppliers and employees.

Current assets include cash, accounts receivable, inventory, and prepaid expenses — anything expected to be converted to cash within 12 months. Current liabilities include accounts payable, short-term debt, accrued expenses, and the current portion of long-term debt due within 12 months.

Current Ratio

The current ratio expresses the same relationship as a multiple, making it easier to compare across companies of different sizes:

A ratio of 2.0× means the company has $2 of current assets for every $1 of current liabilities. The widely cited healthy range is 1.5× to 2.0×. Below 1.0× signals the company cannot cover its near-term obligations from existing assets. Above 3.0× may indicate idle capital — excess cash or inventory not being put to work.

Benchmarks vary significantly by industry. Retailers typically run low current ratios (0.8–1.5×) because they carry large payables and fast inventory cycles. Technology and pharma companies often run above 3× because they hold large cash reserves and have minimal inventory. Always compare to sector peers.

Quick Ratio (Acid Test)

The quick ratio is a more conservative liquidity test that strips out inventory — the least liquid current asset:

Why exclude inventory? Because inventory often cannot be converted to cash quickly at full value. A manufacturer sitting on 6 months of raw materials cannot instantly turn that into cash to pay a creditor. The quick ratio asks: if the company had to pay all its current liabilities tomorrow using only its most liquid assets (cash + receivables), could it?

A quick ratio above 1.0× generally indicates sound short-term liquidity. The gap between the current ratio and quick ratio reveals inventory dependency — a large gap means the company leans heavily on inventory to meet its liquidity numbers.

Current ratio vs. Quick ratio — which matters more?

Neither is universally better. Use both together:

• If the current ratio is healthy but quick ratio is low, the company’s liquidity depends on its ability to sell inventory. This is a risk in downturns when inventory moves slowly.
• If both ratios are similarly high, the company holds most of its current assets in cash and receivables — genuinely liquid.
• If both are below 1.0×, the company faces near- term liquidity pressure regardless of its longer-term asset base.

Cash Conversion Cycle (CCC)

The CCC measures how efficiently a company converts its investments in inventory and other resources into cash:

• DIO — how long inventory sits before being sold. Lower = faster turnover.
• DSO — how long customers take to pay invoices. Lower = faster collection.
• DPO — how long the company takes to pay its suppliers. Higher = more time to use the cash.

A shorter CCC is generally better — the company cycles cash faster. Amazon’s legendary negative CCC (around −30 days) means it collects from customers before it has to pay suppliers, effectively using supplier credit to fund operations. Most healthy businesses target a CCC below 60 days.

What distorts these ratios

• Seasonal businesses have dramatically different working capital at different times of year. A retailer’s balance sheet in November (high inventory) looks nothing like January (post-sale, high cash).
• Window dressing — companies sometimes accelerate cash collections or delay supplier payments at quarter-end to inflate reported ratios. Always look at trends, not single snapshots.
• Industry structure — subscription businesses with large deferred revenue carry high current liabilities that don’t represent cash outflows, making ratios look worse than the underlying cash position.
• Credit facilities — revolving credit lines can make real-time liquidity better than the balance sheet suggests, since companies can draw on committed credit at any time.