Quick ratio and current ratio

Current ratio, quick ratio, and cash ratio — three views of liquidity

Liquidity ratios measure whether a business has enough near-term assets to cover its near-term obligations. They differ in how conservative they are about which assets to count. The current ratio counts everything. The quick ratio excludes inventory. The cash ratio counts only cash. Together they form a triage system: if all three look fine, the business has solid short-term liquidity. If only the current ratio looks fine, the liquidity may depend on being able to sell inventory quickly — which may or may not be realistic.

What the three ratios actually measure

Current ratio = Current assets ÷ Current liabilities. Answers: if we sold everything we could sell in the next year and paid everything we owe in the next year, would we come out ahead? Most useful for lenders assessing general creditworthiness.

Quick ratio (acid test) = (Cash + AR + Marketable securities) ÷ Current liabilities. Answers: if we had to meet our current liabilities without selling any inventory, could we? More conservative because it removes the assumption that inventory can be liquidated at book value.

Cash ratio = Cash ÷ Current liabilities. The most extreme test: if we could only use cash on hand (zero additional collections, zero asset sales), how much of our short-term debt could we cover? Rarely used as a standalone metric but appears as a floor check during financial stress analysis.

The 2008 housing inventory example

The danger of relying only on the current ratio is best illustrated by the 2008 housing crisis. Residential developers and homebuilders (Beazer Homes, Meritage, Standard Pacific) carried enormous land and construction inventory on their balance sheets at historical cost. Their current ratios looked reasonable through early 2007.

But when the market froze, that inventory couldn't be sold at anything close to book value. Quick ratios — which excluded this inventory — had been signaling stress for months before the current ratios deteriorated. Credit analysts who focused on quick ratios saw the crisis coming. Those relying only on current ratios were surprised.

Lender covenant thresholds

Most commercial line-of-credit agreements include a minimum current ratio covenant:

• Operating LOC (unsecured): Typically requires current ratio ≥ 1.25–1.5.
• Asset-based lending (ABL): Borrowing base formula. Less reliance on current ratio covenants; the borrowing base (qualified AR and inventory) controls availability.
• SBA loans: Lenders typically look for current ratio ≥ 1.25 and quick ratio ≥ 1.0.
• Investment grade bonds: Covenants vary; below 1.0 current ratio can trigger accelerated repayment clauses.

If your current ratio is near or below covenant minimums, request a waiver proactively — before the lender discovers it. Lenders punish surprises; they often work with borrowers who communicate early.

Industry-specific thresholds

The "healthy" benchmark for current ratio is contextual:

• Retail (grocery, fast food, general merchandise): 1.0–1.3 can be fine. Rapid inventory turns mean the ratio understates actual liquidity — inventory converts to cash in days, not months.
• Construction: 1.5–2.0 minimum. Long project cycles, retainage holdbacks, and slow GC payments create cash timing gaps that require a larger liquidity buffer.
• Manufacturing: 1.5–2.0. Depending on order cycle length and inventory composition (raw materials that are liquid vs WIP that's not).
• Software / SaaS: Less relevant — current assets are mostly cash and prepaid; liabilities are deferred revenue. Quick ratio and cash ratio are more informative.

Working capital squeeze — overtrading

"Overtrading" is the phenomenon where a growing business runs out of cash despite profitable operations. The current ratio may look acceptable or even improving (growing AR is an asset), but cash is being consumed by the growing receivable balance and inventory build. The cash ratio signals the true crisis: the business is profitable but cash-starved, usually because customers are slow to pay and inventory is required before sales are made.

The solution is usually working capital financing (LOC or factoring) to bridge the gap between spending on inventory/labor and collecting from customers — combined with aggressive effort to shorten DSO.

The Altman Z-score

Edward Altman's 1968 Z-score model uses five financial ratios — including working capital / total assets and retained earnings / total assets — to predict bankruptcy probability. Businesses with Z-scores above 2.99 are in the "safe zone"; below 1.81 is "distress zone." The current and quick ratios, while not directly in the Z-score formula, are inputs that drive the working capital component and signal the same underlying liquidity dynamics the Z-score captures.