How to Calculate Net Profit Percentage

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Net Profit Percentage Calculator

Analyze your business profitability by calculating your bottom-line margin.

Total Expenses:
Net Profit Amount:
Net Profit Percentage:

How to Calculate Net Profit Percentage

The net profit percentage (also known as net profit margin) is a critical financial ratio used to measure the percentage of revenue that remains as profit after all operating expenses, interest, taxes, and preferred stock dividends have been deducted from a company's total revenue.

To calculate net profit percentage manually, use the following formula:

Formula: (Net Profit ÷ Total Revenue) × 100

Where Net Profit is calculated as: Total Revenue - (COGS + Operating Expenses + Interest + Taxes)

Step-by-Step Example

Imagine a small retail business with the following monthly figures:

  • Total Revenue: $10,000
  • Cost of Goods Sold (COGS): $4,000
  • Operating Expenses (Rent, Utilities, Payroll): $3,000
  • Taxes and Interest: $500

Step 1: Calculate Total Expenses
$4,000 + $3,000 + $500 = $7,500

Step 2: Calculate Net Profit
$10,000 – $7,500 = $2,500

Step 3: Calculate Net Profit Percentage
($2,500 ÷ $10,000) × 100 = 25%

Why Net Profit Margin Matters

Unlike gross profit, which only considers the cost of producing goods, the net profit percentage gives you a bird's-eye view of your entire business efficiency. A high net profit margin indicates that a company is priced correctly and is exercising good cost control. It is a primary indicator used by investors and lenders to determine the financial health of a business.

function calculateNetProfit() { var rev = parseFloat(document.getElementById('np_revenue').value); var cogs = parseFloat(document.getElementById('np_cogs').value) || 0; var opex = parseFloat(document.getElementById('np_opex').value) || 0; var other = parseFloat(document.getElementById('np_other').value) || 0; if (isNaN(rev) || rev <= 0) { alert("Please enter a valid Total Revenue amount greater than zero."); return; } var totalExpenses = cogs + opex + other; var netProfitAmount = rev – totalExpenses; var netProfitPercentage = (netProfitAmount / rev) * 100; // Display results document.getElementById('res_total_exp').innerText = "$" + totalExpenses.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById('res_net_amt').innerText = "$" + netProfitAmount.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById('res_net_perc').innerText = netProfitPercentage.toFixed(2) + "%"; document.getElementById('np_results').style.display = 'block'; }

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