A Profit and Loss (P&L) Statement helps you understand whether your business is making money or losing it. This guide will walk you through how to make a simple profit and loss statement, especially if you're an e-commerce merchant looking for an actionable approach.

What Is a Profit and Loss Statement?

Step 1: Calculate Your Net Revenue

Net Revenue = Gross Revenue - Returns, Refunds, and Fees

Start by identifying your gross revenue. This is the total amount of money generated from product sales, before deductions. This figure reflects your actual income from sales and sets the foundation for your profitability analysis. Next, subtract:

  • Product returns and refunds
  • Payment gateway fees (Shopify, PayPal, Stripe, etc.)
  • Canceled orders or chargebacks

Step 2: Calculate Your Gross Profit (by Subtracting COGS)

Gross Profit = Net Revenue - COGS

Step 3: Calculate Your Operating Profit (by Subtracting Operating Expenses)

Operating Profit = Gross Profit - Operating Expenses

Step 4: Include Other Income and Expenses

Step 5: Determine Your Net Profit or Loss

Net Profit = Operating Profit + Other Income - Other Expenses

Once you’ve factored in everything above, calculate your final net profit. This is the most critical number for any business. It tells you whether your business is financially healthy - not just generating sales, but actually keeping profit after all costs are paid.

Profit and Loss Statement Example for E-Commerce

Common Mistakes to Avoid When Setting Up Your PnL

Forgetting to subtract refunds and returns

Your revenue should reflect what you actually keep, not just what you sell. Neglecting to remove returns can inflate your profitability and give a false sense of success.

Overlooking hidden platform fees

Payment processors (like PayPal or Stripe) and e-commerce platforms (like Shopify) charge fees that eat into your profits. These can add up fast, make sure they’re always accounted for in your expenses.

Mixing personal and business expenses

If you're buying ads, subscriptions, or supplies on a personal card, you're risking inaccurate reporting. Keep your finances clean by using dedicated business accounts.

Not updating your COGS regularly

Prices change, especially if you're running promos, changing suppliers, receiving new tariffs or testing new product variants. Outdated COGS data can lead to incorrect gross profit and bad decision-making.

Ignoring your marketing spend

Ad spend is often your biggest variable cost in e-commerce. Whether you’re running Facebook Ads, TikToks, or influencer campaigns, these need to be tracked consistently to understand what’s truly working.

Skipping smaller recurring costs

Subscriptions to apps, tools, or SaaS services may seem minor individually, but they add up. Forgetting to include them can lead to underestimating your operating costs.

Focusing only on revenue, not profitability

Many merchants obsess over sales numbers but don’t track margins. A high-revenue store that’s not profitable is just burning cash. Always prioritize net profit tracking.

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Tracy Ng

Senior Content Executive at TrueProfit & SEO/Content Specialist

Tracy Ng

Tracy is a senior content executive at TrueProfit – specializing in helping eCommerce businesses scale profitably through content. She has over 4 years of experience in eCommerce and digital marketing editorial writing. She develops high-impact content that helps thousands of Shopify merchants make data-driven, profit-focused decisions.

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