Accounting & Finance

Cost of goods sold versus operating expenses: Understanding the differences

  • 5 min Read
  • May 31, 2023

Author

Escalon Editorial Team

Table of Contents

Keeping track of daily operating expenses in your accounts is a fundamental part of running a business. Cost of goods sold and operating expenses are the two categories under which these costs are classified. Not only do they differ from one another on certain grounds, but they are also recorded as separate line items on the income statement. Thereby, making it crucial to know the key differences when completing your books.

Schedule a call today

What is cost of goods sold in accounting?


Cost of goods sold or COGS is basically an accounting term that refers to the direct costs incurred in producing or acquiring the goods or services that a company sells. Meaning, COGS is the aggregate of all that is included to get your goods or services to the market.

Examples of COGS include the cost of raw materials or supplies, direct labor and factory overhead expenses directly associated with the production process.

COGS represents the accumulated cost of producing or acquiring the products that your business sells, thereby helping you determine the amount that you should target when you are selling your product to break even before you bring in a profit. That is, to make a profit, you should ensure that your COGS is less than the dollar amount your business charges customers to buy your products.

How is COGS calculated?


The basic method of calculating COGS for a small business with an inventory to maintain is:

COGS = Beginning inventory + Purchased inventory – Ending inventory

This formula denotes the value of the inventory sold or made in a specified time period, and takes into consideration the ups and downs of a business over a period of time. Costs can fluctuate on many factors like demand and supply chain.

For more clarity, let’s consider a scenario in which your company starts with $10,000 in inventory, spends $2,500 on purchases during the time period (quarter), and ends with $500 in inventory. To get your COGS for the specified time period, enter your totals into the COGS formula.

COGS = $10,000 + $2,500 – $500

Your COGS for the quarter is $12,000.

What are operating expenses?


As the name suggests, operating expenses, also known as OPEX are business expenses incurred to maintain day-to-day business operations and support core activities.

Talk to us about how Escalon’s FinOps can help you in effective financial management.

 

Unlike COGS, operating expenses are not directly tied to the production of goods or services. However, they are a crucial component of a business’s basic operations and are unavoidable for most businesses. 

OPEX typically encompasses a broad range of expenditures, including but not limited to rent or lease, payroll (excluding direct labor), sales and marketing, equipment, office supplies and insurance. They don’t include interest, investment etc. paid out.

How is OPEX calculated?


OPEX, like COGS, can demonstrate your business’s profitability quotient. A rise in operating expenses translates into lower profits for your business.

Let’s consider an example, say you own a cafe for which you pay $1000 in rent, $4,500 in payroll expenses, $200 in sales and marketing, $250 in utilities, $50 in office supplies and $200 in insurance costs per month. Add together your expenses to get your overall operating costs for the month:

Operating expenses would be equal to $1000 + $4,500 + $200 + $250 + $50 + $200 = $6,200

Hence, your operating expenses for the month are $6,200.

What is the basic difference between COGS and OPEX?


OPEX are costs that are incurred during your normal business timings when the business is up and running. If any expense is not COGS, it’s likely to be operating expenses.

The direct cost of providing goods or services to clients is shown in the COGS line item. Purchases of direct materials and direct labor are two common examples of expenses that are accounted for in COGS.

Whereas, OPEX refers to expenses associated with supporting the business’s fundamental activities but is not directly related to the generation of revenue. An expense must be ongoing in order to qualify as an operating expense.

Spending on COGS is unquestionably crucial for meeting consumer demand and maintaining market competitiveness, but OPEX is as much important because a business can’t function without investing in items like rent, wages, sales and marketing, insurance or legal expenses for that matter.

Besides, OPEX doesn’t solely include overhead costs. In fact, it also covers expenses such as those related to research and development (R&D), market analysis and product research — that help foster growth and establish a competitive advantage.

Bottom line


If you are unsure about categorizing an expense as COGS, just ask yourself, “Would this expense have materialized even if no sales were made?” If “yes,” then this expense does not fall under the category of COGS. For instance, in the case of a warehouse full of inventory, COGS comprises the expenses involved in producing and shipping the goods to the warehouse. OPEX are the costs associated with maintaining the warehouse, which include rent and utility charges. Interestingly, according to research, inventory is the second-highest expense for a small business after labor, accounting for 17 to 25% of total spending.

Want more? In addition to taxes, accounting, bookkeeping and CFO services through its FinOps, Escalon’s Essential Business Services include PeopleOps (HR, benefits, recruiting and payroll) and Risk (business insurance). Talk to an expert today.

Schedule a call today
This material has been prepared for informational purposes only. Escalon and its affiliates are not providing tax, legal or accounting advice in this article. If you would like to engage with Escalon, please contact us here.

Talk to our team today to learn how Escalon can help take your company to the next level.

  • Expertise you can trust

    Our team is made up of seasoned professionals who bring years of industry experience to the table. You gain a trusted advisor who understands your business inside out.

  • Quality and consistency

    Say goodbye to the hassles of hiring, training and managing in-house finance teams. You will never have to worry about unexpected leave of absence or retraining new employees.

  • Scalability and Flexibility

    Whether you’re a small business or a global powerhouse, our solutions scale with your needs. We eliminate inefficiencies, reduce costs and help you focus on growing your business.

Contact Us Today!

Tap into the latest insights from experts in your industry

Financial Operations

Stock-Based Compensation Expense: How to Record It Correctly

Stock-based compensation is one of the largest non-cash expenses on most startup income statements and one of the most consistently...

HR & People Operations

Global Payroll: How to Pay a Distributed Team Compliantly

A company with 15 employees in 9 countries used to be unusual. In 2026, it is a normal Series A....

Tax Operations

QSBS Tax Exemption: How Founders & Early Employees Save on Taxes

QSBS is one of the most valuable and most overlooked tax provisions in the US tax code. A founder who...

Financial Operations

ASC 606 Revenue Recognition for SaaS: A Practical Guide

Every SaaS finance team has had the same argument at some point: when do we actually recognize this revenue? A...

Financial Operations

Web3 Accounting: How Token & Crypto Treasuries Change the Books

A Web3 company’s books look familiar at the top level: revenue, expenses, payroll, cash. The complexity starts where the cash...

Financial Operations

Cash Runway: How to Calculate It and Extend It

Cash runway is the simplest and most consequential metric in startup finance. It is the answer to one question: how...

Financial Operations

Nonprofit Accounting Basics: Fund Accounting vs Standard Books

Nonprofit accounting looks similar to business accounting on the surface but answers an entirely different question. A business asks: are...

Financial Operations

SaaS Rule of 40 Explained: How Investors Read Your Numbers

Growth or profitability? For most SaaS founders, the answer used to be growth at all costs. That changed when capital...

Financial Operations

ARR vs MRR: What Each Metric Tells You and When to Use It

Every SaaS founder has been asked the same question by an investor: what is your ARR? And almost every founder...