Good profitability ratios depend entirely on the industry you’re looking at. A 5% net profit margin is strong for a grocery retailer but weak for a software company. The five most widely used profitability ratios are gross profit margin, operating profit margin, net profit margin, return on assets (ROA), and return on equity (ROE). Each one measures a different layer of how efficiently a business turns revenue or capital into profit.
Gross Profit Margin
Gross profit margin tells you how much money a company keeps after paying the direct costs of making its product or delivering its service. The formula is simple: subtract the cost of goods sold from revenue, then divide that number by revenue. If a company brings in $1 million in revenue and spends $600,000 on materials, labor, and production, its gross margin is 40%.
This ratio varies dramatically by industry. Software companies routinely post gross margins above 60% because their product costs almost nothing to reproduce once built. Systems and application software companies average about 72%, while entertainment software averages around 66%. Manufacturing is a different story. Auto and truck makers average roughly 10%, steel producers around 12%, and aerospace and defense companies about 17%. Retail grocery sits near 26%, while general retail runs closer to 33%.
A high gross margin means the company has room to absorb its overhead costs (rent, salaries, marketing) and still turn a profit. A shrinking gross margin over time can signal rising input costs or pricing pressure from competitors.
Operating Profit Margin
Operating profit margin goes one step deeper. It takes gross profit and subtracts operating expenses like rent, salaries, marketing, and research costs. The result shows how much profit the core business generates before interest payments and taxes enter the picture. The formula is operating income divided by revenue.
This is often the most useful margin for comparing companies in the same industry because it strips out differences in tax strategies and debt levels. A company with a healthy gross margin but a thin operating margin is spending too much to run the business. If two competitors have similar gross margins but one has a significantly higher operating margin, that company is managing its overhead more efficiently.
Net Profit Margin
Net profit margin is the bottom line, literally. It’s calculated by dividing net income by total revenue. This number reflects everything: production costs, operating expenses, interest on debt, taxes, and any one-time gains or losses. It answers the simplest question investors and business owners care about: out of every dollar of revenue, how many cents end up as actual profit?
Benchmarks vary widely. Semiconductor companies average net margins around 30%. Systems and application software companies average about 25%. At the other end, grocery retailers average just 1.3%, auto parts makers about 0.7%, and auto manufacturers roughly 1.3%. General retail sits near 5.6%, food processing around 2.8%, and healthcare products about 9.6%.
The key takeaway: comparing a software company’s net margin to a retailer’s is meaningless. Retailers operate on razor-thin margins but make up for it with enormous sales volume. Software companies have high margins but may spend heavily on customer acquisition. Always compare within the same industry.
Return on Assets (ROA)
ROA measures how effectively a company uses everything it owns to generate profit. The formula is net income divided by total assets. If a company earns $500,000 in net income and holds $5 million in assets, its ROA is 10%.
This ratio is especially useful for comparing companies that require very different levels of capital. A manufacturing plant needs expensive equipment, warehouses, and inventory, so its ROA will naturally be lower than a consulting firm that operates with laptops and office leases. An ROA above 5% is generally considered solid for asset-heavy industries, while asset-light businesses like software or professional services often exceed 15% or 20%.
Watch out for companies that artificially boost ROA by selling off assets or using aggressive depreciation schedules. A rising ROA is a good sign only if revenue and income are growing alongside it.
Return on Equity (ROE)
ROE shows how much profit a company generates for every dollar its shareholders have invested. It’s calculated by dividing net income by shareholders’ equity (the company’s total assets minus its total liabilities). The total market average for ROE sits around 17%, based on NYU Stern data from January 2026.
An ROE above 15% to 20% is widely considered strong, but context matters. A company can inflate its ROE by taking on large amounts of debt. When a company borrows heavily, its equity shrinks relative to its assets, which pushes ROE higher even if the underlying business isn’t becoming more profitable. This is why experienced investors look at ROE alongside the company’s debt-to-equity ratio. A 25% ROE at a company carrying moderate debt is far more impressive than the same number at a company loaded with borrowing.
One-time events can also distort ROE. A large asset sale, a legal settlement, or a tax windfall can temporarily spike net income and make the ratio look better than the business’s actual recurring performance. Checking ROE over three to five years gives you a much clearer picture than a single snapshot.
How to Use These Ratios Together
No single profitability ratio tells the full story. A company with a high gross margin but a low net margin is spending too much on operations, interest, or taxes. A company with strong net margins but a low ROA may be sitting on underutilized assets. A business showing a high ROE but mediocre margins might be heavily leveraged.
The most informative approach is to track all five ratios over time and compare them against direct competitors. Look for consistency. A company that maintains a 20% operating margin year after year is generally in a stronger position than one that swings between 8% and 25%, even if the volatile company occasionally posts a higher number. Stability in profitability ratios signals pricing power, cost discipline, and a durable business model.
When you’re evaluating a specific company or your own business, pull up industry averages from sources like NYU Stern’s margin data (freely available online). Find the sector that matches most closely, then see where the numbers land relative to peers. A ratio that’s “good” is one that meets or exceeds the industry median, holds steady or improves over multiple years, and isn’t propped up by unsustainable debt or one-time windfalls.