What Belongs in COGS? A Guide for CPG Founders Fixing Margin Errors

You’re growing your consumer brand, moving product, and building a loyal audience. Yet there’s an uncomfortable disconnect between sales momentum and the cash in your bank account. Your gross margins look inconsistent, and you’re not sure if the problem lies in pricing, operations, or something buried in the books. In most early‑stage product businesses, misclassified costs are a common culprit. When you understand what actually belongs in Cost of Goods Sold (COGS) and what should sit in operating expenses, you reclaim clarity over your contribution margin and make pricing and cash‑flow decisions with confidence.

COGS vs. Operating Expenses: Why the Difference Matters

Cost of goods sold (COGS) represents the direct costs of producing goods. It includes raw materials, direct labor and allocated manufacturing overhead required to make or acquire the items you sell. COGS sits directly beneath revenue on the income statement, and managing it effectively can mean the difference between running a business profitably and endlessly chasing cash. COGS appears in the gross margin calculation, so even small classification errors can significantly distort your understanding of unit economics.

Operating expenses (OPEX) are the indirect costs required to run the business. They support day‑to‑day operations but are not tied to a specific unit of product. Operating expenses include items such as sales and marketing salaries, fulfillment expenses, transaction fees, office rent, insurance, legal and accounting fees. These costs are deducted below gross profit to arrive at operating income. Confusing direct production costs with indirect operating costs muddies decision‑making and can lead to mispricing, inaccurate tax reporting and cash‑flow surprises.

What Belongs in COGS

A simple litmus test for COGS is: Would this cost exist if you produced zero units? If not, it’s likely part of COGS.Costs that do belong in COGS for a product‑based brand typically include:

• Raw materials or components – The ingredients, packaging and parts that become part of your finished product.
• Items purchased for resale – If you buy finished goods to sell, the purchase price is part of COGS.
• Direct labor costs – Wages and benefits for employees who physically make or assemble your product.
• Manufacturing overhead – Factory utilities, equipment maintenance, facility rent and depreciation on production equipment.
• Freight‑in and inbound shipping – The cost of transporting raw materials or inventory to your production or warehouse.
• Packaging materials that ship with the product – Boxes, labels and protective packaging used to present the product to customers.
• Parts used in production and storage costs – Additional components or storage costs necessary to manufacture and store goods.

When in doubt, ask yourself whether the cost is incurred because you are creating inventory. If the expense is required regardless of whether you produce anything, it belongs in operating expenses instead.

What Doesn’t Belong in COGS

Certain costs are never part of COGS even though they might seem related to delivering a product. Excluding them keeps your gross margins honest and prevents distortions in tax calculations. These include:

• Distribution and shipping to customers – Outbound freight and last‑mile delivery are selling expenses, not production costs. Bubble wrap and tape used to protect packages in transit are not part of COGS.
• Merchant or Platform costs – Transaction/credit card fees or fees related to shopify or Amazon are not part of COGS.
• Sales and marketing costs – Salaries and commissions for your sales team, digital ads, trade shows and promotional campaigns belong in OPEX.
• General and administrative expenses – Office rent, insurance, legal fees, accounting services and admin staff salaries support the business but are not tied to product units. These should be classified as operating expenses.
• Management salaries – Leadership compensation is part of operating expenses unless the managers are directly assembling products.
• Service‑related costs – If you only provide services and don’t sell a tangible product, COGS does not apply. Misclassifying service costs as COGS can trigger extended IRS audit periods.

Keeping these costs out of COGS ensures that gross profit reflects the efficiency of producing or acquiring your goods rather than the cost of running the business.

Common Misclassification Mistakes

Many founders inadvertently inflate or deflate their COGS because of poor classification. Common pitfalls include:

• Stuffing overhead into COGS – It’s tempting to toss every business expense into COGS, but only direct production costs qualify.  Small business owners sometimes include rent or even Netflix subscriptions in COGS, which is a classic blunder. Ask yourself, “Does this make my product?” If not, it’s not COGS.
• Mixing service and product costs – Service businesses don’t report COGS. Even if you use materials like paper or electricity in service delivery, those costs are operating expenses.
• Treating packaging for shipping as COGS – Packaging used to protect products during outbound shipping (bubble wrap, tape, generic cardboard) is a selling expense. Only the packaging that becomes part of the product presentation (e.g., branded boxes) belongs in COGS.
• Inconsistent inventory valuation – Switching between FIFO, LIFO and weighted average methods from one period to the next can cause wild swings in COGS. Choose a method, document it and apply it consistently to keep margins comparable.

Correcting these misclassifications requires revisiting your chart of accounts and aligning your accounting system with the reality of how your goods flow from procurement to sale.

How COGS Affects Margin and Pricing

Gross margin is calculated as Net Revenue minus COGS. Because COGS appears immediately below revenue, errors in classification trickle directly into gross profit and distort your view of product profitability. A misclassified expense can make a healthy product line appear unprofitable or mask the need for price increases.

Beyond gross margin, many founders rely on contribution margin to understand how each unit contributes to covering fixed costs. Contribution margin is the selling price per unit minus the variable costs associated with producing and selling that unit. It represents the incremental money generated for each product sold after covering variable costs, leaving funds to cover fixed costs and profit. Many of the items that are erroneously included in COGS should be considered in contribution margin. If COGS or variable costs are misclassified, your gross and contribution margin analysis becomes meaningless. Accurate margin analysis is the foundation for deciding whether to raise prices, streamline production or discontinue a product.

A Simple Framework to Classify Costs

To build confidence in your financial reporting and pricing decisions, adopt a straightforward process for classifying expenses:

1. Identify direct production costs. Gather all expenses related to acquiring materials and making products. This includes raw materials, direct labor, manufacturing overhead, inbound freight and packaging that becomes part of the product.
2. Separate indirect and support costs. Allocate expenses like marketing, sales, office rent, professional services and management salaries to operating expenses.
3. Apply the zero‑production test. Ask, “Would this cost exist if we produced zero units?” If the answer is no, it probably belongs in COGS.
4. Decide on an inventory valuation method and stick to it. Whether you use FIFO, LIFO or weighted average, consistency prevents artificial margin swings.
5. Document your policy and train your team. Write down which expense categories belong where. Ensure bookkeepers, operations and finance teams apply the same logic every month.
6. Review monthly and adjust. Revisit your classifications as your product line evolves. New suppliers, co‑packers or shipping strategies may change the composition of your COGS.

Following this framework helps you maintain clean financial statements and reduces the risk of mispricing or misreporting.

Putting It Into Practice: A Real‑Life Example

Imagine a growing beverage brand that sells canned sparkling water. In the early days, the founder considered every cost tied to the product as COGS—raw ingredients, cans, labels, freight into the warehouse and the fulfillment cost of shipping cases to customers. The team even allocated Shopify transaction fees and Amazon referral fees as part of COGS. As a result, gross margins hovered around 20%, and the founder struggled to understand why the product felt unprofitable.

After working with a finance advisor, they re‑classified shipping to customers, Amazon fees and payment processing fees as operating expenses and moved branded shipping boxes to COGS (because they formed part of the customer’s experience). They separated direct labor in the co‑packing facility from salaried operations staff. Overnight, their COGS dropped and gross margins increased to 32%. With a clearer view of contribution margin, the founder realized they could lower prices on one SKU to gain market share while preserving profitability. A simple re‑classification unlocked better pricing decisions and improved cash flow.

Building Proactive Systems for Cash Flow Clarity

Accurate COGS classification isn’t just a bookkeeping exercise—it’s part of a proactive financial system. By mapping every cost to the right category and reviewing margins regularly, you build a data set that supports forecasting, pricing, and inventory planning. A proactive system includes:

• A standardized chart of accounts with clear definitions for COGS and operating expense categories.
• Integrated inventory and accounting software that tracks units, costs and inbound freight in real time.
• Regular margin reviews to identify cost creep or supplier price increases before they erode profitability.
• Cash flow planning tools, such as a weekly cash flow sheet and cash conversion cycle analysis, to connect inventory investment to cash availability.

At BASECAMP Consulting Group, we believe that proactive financial systems replace chaos with clarity and confidence. When you understand what belongs in COGS, you can price your products smartly, plan your cash needs, and grow your brand without constant fire drills.

Next Steps

If you suspect your COGS is bloated or misclassified, don’t keep guessing. Request a COGS accuracy review with our team. We’ll help you dissect your current classifications, establish a consistent methodology and identify quick wins that can improve your margins and cash flow. The sooner you clarify your numbers, the sooner you can make data‑driven decisions about pricing, production and growth.