Revenue looks impressive on a sales report, but the only number that actually pays the bills at the end of the year is net profit — what is left after every cost and every tax. The Smekys net profit calculator walks your income statement in one line: start with revenue, subtract what it cost to make the product, subtract the overhead of running the business, then subtract taxes. What remains is your true bottom line, and the percentage of revenue it represents is your net profit margin.
This matters because gross profit and operating profit can both look healthy while net profit is thin, negative, or eaten away by tax. Sliding the inputs below updates the gross profit, operating profit, income tax, net profit, and net profit margin instantly, so you can stress-test pricing, overhead cuts, and tax planning against one clear result.
How to Use
- Enter Total Revenue — all sales and other income for the period before any costs. If your business brought in $500,000 in the year, type 500000.
- Enter Cost of Goods Sold (COGS) — the direct cost of delivering what you sold: materials, factory labor, and the wholesale price of inventory you resold. This is subtracted first to reveal gross profit.
- Enter Operating Expenses — the overhead of running the business that is not tied to a specific product: rent, salaries, marketing, software subscriptions, and utilities.
- Set your Effective Tax Rate. The US federal corporate rate is a flat 21%, but if your state also taxes profits, use a blended effective rate that reflects what you actually pay.
- Read the result card: Gross Profit, Operating Profit (EBIT), Income Tax, Net Profit, and Net Profit Margin update immediately.
- Experiment — raise COGS to model supply inflation, cut operating expenses to see the margin you would gain, or nudge the tax rate to plan around state changes.
The Net Profit Formula
Net profit is the bottom line of the income statement. Built up step by step:
- Gross Profit = Revenue − Cost of Goods Sold
- Operating Profit (EBIT) = Gross Profit − Operating Expenses
- Income Tax = Operating Profit × Effective Tax Rate (zero when the business runs at a loss)
- Net Profit = Operating Profit − Income Tax
- Net Profit Margin = Net Profit ÷ Revenue × 100
For a business with $500,000 in revenue, $300,000 in COGS and $100,000 in operating expenses, gross profit is $200,000 and operating profit is $100,000. After an effective tax burden of about $22,000 (the 21% federal rate plus a small blended state adjustment), net profit is $78,000, and the net profit margin is 15.6%. That means the company keeps roughly 15.6 cents of every dollar of revenue after all costs and taxes.
Notice the difference between the three profit lines. Gross profit of $200,000 looks strong, but $100,000 of operating expenses and $22,000 of tax cut the bottom line to $78,000 — barely more than a third of gross profit. This is why investors and lenders focus on net profit margin rather than gross margin alone.
Gross, Operating and Net Profit: What Each One Means
- Gross profit shows how efficiently you turn raw materials and inventory into sold product. A low gross margin means your product costs too much to make relative to its price.
- Operating profit (also called EBIT, earnings before interest and tax) strips away overhead. A strong gross margin but weak operating profit signals that rent, payroll or marketing is too heavy for the sales volume.
- Net profit is what owners actually keep. It reflects every cost in the business, including tax. A positive net profit margin means the business is sustainable; a negative one means it is subsidized by cash reserves or borrowing.
Aim for context, not a magic number. Software and consulting businesses often run 15–25% net margins, restaurants and retail commonly run 3–7%, and construction companies hover near 5–10%. Compare your result to companies in your own industry before judging whether 15.6% is healthy or weak.
Examples
Example 1 — A product business at default. Revenue $500,000, COGS $300,000, operating expenses $100,000, effective tax 21% plus state. Gross profit is $200,000, operating profit $100,000, tax about $22,000, and net profit $78,000 — a 15.6% margin. Cutting operating expenses by $20,000 raises net profit to roughly $93,800 (after the extra tax) and pushes the margin above 18%.
Example 2 — A large operation. A company with $2,000,000 in revenue, $900,000 in COGS and $400,000 in operating expenses earns $700,000 of operating profit. At a 21% tax rate the tax bill is $147,000, leaving net profit of $553,000 — a 27.65% margin. The scale shows how fixed overhead gets spread across more sales, lifting margin dramatically.
Example 3 — A thin-margin startup. Revenue $250,000, COGS $180,000, operating expenses $45,000. Operating profit is only $25,000; after a $5,250 tax, net profit is $19,750 — a 7.9% margin. A single slow month or a 5% rise in COGS could push this business into a loss, which is why net profit margin deserves more attention than raw revenue.
FAQ
How do I calculate net profit?
Subtract cost of goods sold, operating expenses and income tax from total revenue. The formula is: Net Profit = (Revenue − COGS − Operating Expenses) × (1 − Tax Rate). Divide that by revenue and multiply by 100 to get your net profit margin.
What is a good net profit margin?
It depends heavily on industry. Software and professional services often earn 15–25% net margins, while restaurants, grocery stores and retail typically run 3–7%. A net margin above 10% is usually viewed as healthy for a small business, but always benchmark against direct competitors in your sector.
What is the difference between gross profit and net profit?
Gross profit only deducts the direct cost of the product (COGS) from revenue. Net profit deducts everything — COGS, operating expenses, and tax. Gross profit tells you if your product pricing works; net profit tells you if the whole business is actually profitable.
Does net profit include taxes?
Yes. Net profit, also called net income or the bottom line, is what remains after all expenses including income tax have been subtracted. Profit before tax is called operating profit or EBIT. Use the Effective Tax Rate field to reflect federal plus state tax.
What if my business has a net loss?
If operating profit is negative, the calculator applies zero tax for the period and reports the loss as net profit. A net loss means costs exceeded revenue; you can carry the loss forward to offset future taxable income under tax rules, reducing tax in later profitable years.
How can I improve my net profit margin?
Raise prices if demand allows, renegotiate supplier costs to lower COGS, trim operating expenses that do not drive sales, and grow revenue so fixed overhead is spread across more units. Even a small 2-point margin improvement compounds strongly as sales grow.
Disclaimer
This net profit calculator is provided for informational purposes only and does not constitute financial, accounting, tax, or legal advice. Results are estimates based on the figures you enter; your actual net profit, tax rate, and deductions depend on your business structure, jurisdiction, accounting method, and current tax law. State tax rates and deductible expenses vary widely. Always confirm your results with a qualified accountant or tax professional before making business or investment decisions.