Quick Ratio: Formula, Acid-Test & Cyclical Liquidity Guide

Quick Answer — Quick Ratio (Acid-Test)

Quick ratio = (Cash + Short-Term Investments + Receivables) ÷ Current Liabilities. It tests whether a company can meet short-term obligations without selling inventory. Quick ratio above 1.0 = comfortable liquidity; below 0.8 = potential stress. For cyclical sectors (shipping, mining), quick ratio matters at cycle troughs when revenue drops sharply. Companies with quick ratio below 0.5 and high debt face dividend cut risk in downturns.

Related: Hard Asset Balance Sheet Analysis

The quick ratio — also known as the acid-test ratio — measures whether a company can cover its short-term obligations using only its most liquid assets, without having to sell inventory or raise fresh financing. It is the stricter cousin of the current ratio, and in the cyclical hard-asset sectors I focus on, it is the liquidity number I trust most when I want to know whether a business can survive a downturn.

Liquidity is what keeps a company alive through the trough of a cycle. A miner or shipper can be deeply profitable across a full cycle yet still go under if it runs out of cash at the wrong moment and cannot refinance. The quick ratio is a fast read on that survival question.

Related: best high-yield stocks with strong liquidity

Quick Ratio Formula

Quick Ratio = (Cash + Marketable Securities + Receivables) / Current Liabilities

An equivalent way to write it:

Quick Ratio = (Current Assets − Inventory − Prepaid Expenses) / Current Liabilities

The defining feature is what gets excluded: inventory and prepaid expenses. Inventory is left out because converting it to cash can be slow and, in a downturn, only possible at a discount. Prepaid expenses are excluded because they cannot be turned into cash at all — they have already been spent. What remains are the "quick assets" — items that can become cash within roughly 90 days.

Worked example:
Cash & equivalents: $280m
Marketable securities: $40m
Receivables: $180m
Inventory: $320m (excluded)
Current liabilities: $400m

Quick Ratio = ($280m + $40m + $180m) / $400m = $500m / $400m = 1.25×

The company can cover 125% of its short-term obligations without touching inventory. Comfortable. Note the current ratio would be ($500m + $320m) / $400m = 2.05× — much higher, because it counts the inventory.

Quick Ratio vs. Current Ratio

The two ratios answer the same broad question — can the company pay its near-term bills — but with different strictness:

RatioIncludes inventory?Best for
Current ratioYesBusinesses with fast-turning, liquid inventory (retail)
Quick ratioNoBusinesses with slow or illiquid inventory (mining, heavy industry)

The gap between the two ratios is itself informative. A company with a current ratio of 2.5× but a quick ratio of 0.8× is carrying a large, slow-moving inventory pile — common in mining when commodity prices fall and stockpiles build up. That inventory may not convert to cash quickly enough to meet obligations, which is exactly the situation the quick ratio is designed to flag.

How to Read the Quick Ratio

Quick RatioGeneral readHard-asset context
< 0.5×Liquidity stressVulnerable in a downcycle; refinancing-dependent
0.5× – 1.0×Tight but workableAcceptable if backed by a committed credit line
1.0× – 1.5×HealthyComfortable buffer for a cyclical business
> 1.5×Strong / possibly idle cashFortress liquidity; or capital that could fund dividends

As always, context beats the rule book. A quick ratio below 1.0× is not automatically dangerous if the company has a large undrawn revolving credit facility and contracted future cash flows. Many LNG shipping operators run lean liquidity precisely because long-term charters give them predictable receipts. A spot-exposed tanker company with the same ratio is in a far riskier position.

Quick Ratio in Hard-Asset Sectors

Each sector has its own liquidity norms, driven by the nature of its working capital and cash-flow predictability:

SectorTypical quick ratioLiquidity dynamics
Tanker shipping0.6× – 1.3×Minimal inventory (just bunker fuel); receivables-driven
LNG / LPG shipping0.8× – 1.5×Contracted charters smooth liquidity needs
Diversified mining0.5× – 1.2×Large inventory; quick ratio << current ratio
Upstream oil & gas0.7× – 1.4×Modest inventory; receivables & cash dominant
Midstream pipelines0.4× – 0.9×Low ratios normal — stable fee income & credit access

The midstream row often surprises people. Pipeline operators routinely run quick ratios below 1.0× and that is perfectly normal — their revenue is fee-based, highly predictable, and they enjoy strong access to capital markets. Applying a one-size-fits-all liquidity threshold across sectors leads to bad conclusions.

Why Liquidity Matters for Dividend Investors

The downcycle survival test: When I assess a high-yield cyclical stock, liquidity is the question behind the question. A juicy dividend means nothing if the company has to slash it — or worse, issue equity at the bottom — to stay solvent. I check three things together:

1. Quick ratio — can it meet near-term obligations from liquid assets?
2. Undrawn credit lines — is there committed backup financing?
3. Debt maturity wall — when does the next big refinancing fall due?

A company with a thin quick ratio, no credit backstop, and a near-term maturity wall is one rate-cycle trough away from a dividend cut, regardless of how attractive the headline yield looks.

The Limits of the Quick Ratio

For all its usefulness, the quick ratio has real blind spots that I keep front of mind:

None of this makes the quick ratio useless — it makes it a starting point. I treat a weak quick ratio as a prompt to dig into the cash-flow statement, the debt maturity schedule and the credit facilities, not as a verdict on its own.

Putting It Together

The quick ratio is a snapshot, not the whole story. I use it as the first filter for near-term solvency, then layer in the balance-sheet picture — net debt, interest coverage and free cash flow — to judge whether a cyclical business can fund its dividend through a downturn. A strong quick ratio buys time; durable cash generation is what ultimately protects the payout. For the broader framework, see Dividend Safety and Working Capital.

Marco Bozem — MB Capital Strategies hard assets analyst

Marco Bozem

Investor & Analyst | Hard Assets, Dividends, Shipping | MB Capital Strategies

Marco analyses shipping, mining and energy stocks with focus on balance sheet strength, liquidity and dividend sustainability. All analysis based on public reports. Not investment advice.

Quick Ratio Acid-Test Ratio Liquidity Working Capital Shipping Stocks Dividend Safety

Related: Current Ratio · Working Capital · Net Debt · Interest Coverage · Dividend Safety

Disclaimer: This glossary entry is for educational purposes only and does not constitute investment advice. Liquidity benchmarks are general guidelines and vary by company, sector and market conditions. Always conduct your own research.