A business can know exactly what it spent last month and still struggle to explain why margin fell. Rent, payroll, software, insurance, contractor fees, and cloud bills are easy to find in the accounts. Harder to see is what happened inside those totals and which expenditures produced value. In service businesses, that gap can become agency margin leakage: the costs are visible, but the work that reduced the margin is not.
Operating costs include delivery spending and operating expenses such as administration and sales. Separating them shows which category drove a margin decline. What did that spending pay for, and did it support the revenue the company expected?
Operating Costs vs Operating Expenses: Quick Answer
Under the management definition used here, operating costs include production or service-delivery costs plus operating expenses. Operating expenses form part of that total rather than a separate, additional category.
Operating expenses for a business support normal operations outside the production or delivery costs classified separately in this article. They may be recurring or occasional. Common operating expenses examples include administrative payroll, office rent, insurance, and marketing. Operational expenses are often used as an alternative term; operating expenses are commonly abbreviated as OpEx.
The Two Categories, Side by Side
In an operating cost vs operating expense comparison, scope is the main difference. Operating costs cover delivery and organizational support, while operating expenses cover the support portion under the definition used here.
What Do They Cover?
Production or delivery costs plus operating expenses
Operating activities outside separately classified production or delivery costs
Can They Include the Cost of Goods Sold (COGS) or the Cost of Services?
Yes
Excluded under this article’s definition
Typical Examples
Delivery labor, materials, production overhead, and administrative expenses
Office rent, administrative payroll, marketing, and internal software
Where do they affect profit?
Gross profit and operating profit, depending on classification
Operating income after gross profit
The broader term is not a standardized financial-statement line item, so companies may use it differently. The comparison here follows the management definition above.
What Are Operating Expenses?
The answer to “what are operating expenses?” depends on how a company presents its costs. In this article, they are expenses that support normal operations outside separately classified production and delivery costs.
A practical operating expenses definition includes administrative payroll, office rent, utilities, sales and marketing, insurance, and internal software subscriptions. These expenses may be recurring or occasional. Classification depends on how the resource is used and the applicable accounting policy.
For U.S. federal tax purposes, the IRS distinguishes deductible business expenses from costs that must be capitalized or included in inventory. This guidance addresses tax treatment rather than establishing a universal distinction between operating costs and operating expenses.
What Is Included in Operating Expenses and Operational Expenses
To determine what is included in operating expenses, ask whether the expenditure supports the wider organization or can be assigned directly to the product or service sold. The examples of operating expenses below show common cases.
Administrative payroll
Yes
Rent and utilities
Yes
Sales and marketing
Yes
SaaS subscriptions
Usually
Professional services
Yes
Travel and training
Usually
Depreciation and amortization
Often
Direct production labor
Usually classified under COGS or cost of services instead
Many companies group much of this spending under selling general and administrative expenses. These SG&A expenses can include finance, HR, legal, office, and other administrative expenses, though some companies report sales separately.
Payroll shows why the purpose of a cost matters. A finance manager's salary usually falls under overhead, while manufacturing or direct project labor may fall under COGS or cost of services. In service businesses, scope creep in project management can push more paid hours into a project even when the payroll line itself stays unchanged.
What Are Operating Costs?
The question “What are operating costs?” has no single standardized accounting answer. In this article, they cover production or service delivery plus the expenses required to support normal operations.
This operating costs definition brings delivery spending and overhead into one view while preserving their separate accounting categories. The calculation below shows how they add up.
What Is Included in Operating Costs?
The business model determines what is included in operating costs. For a manufacturer, common operating costs examples include raw materials, factory labor, and utilities.
In software or consulting, business operating costs may include project labor, contractors, client hosting, and finance payroll. These examples of operating costs span delivery and overhead: client hosting supports the service sold, while collaboration software supports internal work. An operating expenses vs operating costs review should therefore follow how each resource is used.
How to Calculate Operating Costs and How to Calculate Operating Expenses
To calculate operating costs under this article’s definition, finance adds production or service-delivery costs to operating expenses for the same period. To calculate operating expenses, it totals the separately classified support expenses without counting any item twice.
Operating Cost Formula
The operating cost formula combines delivery costs and operating expenses while preserving their separate accounting categories:
Operating Costs = COGS or Cost of Services + Operating Expenses
For a service company with $420,000 in cost of services and $280,000 in OpEx for the quarter:
Total Operating Costs = $420,000 + $280,000 = $700,000
To calculate operating costs consistently, contractor fees, software charges, and other expenses need consistent treatment across periods. Otherwise, a category may change because an item moved between accounts rather than because spending increased.
Operating Expenses Formula
The operating expenses formula adds the support expenses recognized for the period. The categories must not overlap; software and insurance, for example, should not be added separately if they already sit within another subtotal.
Operating Expenses = Administrative Payroll + Sales and Marketing + Office Facilities + Internal Software + Insurance and Professional Fees + Other Operating Expenses
In a separate example, the company records $120,000 in administrative payroll, $40,000 in office facilities, $35,000 in internal software, $30,000 in sales and marketing, and $15,000 in insurance and professional fees:
Total Operating Expenses = $240,000
Knowing how to calculate operating expenses establishes the support-cost total. Explaining a change requires identifying the affected category: new administrative staff may increase OpEx, while additional project labor may increase the cost of services.
Operating Expense or Not? Common Business Costs Explained
Some costs have an obvious treatment; others depend on how the company uses them. Software, cloud services, equipment, and labor need to be classified according to the role they play in the business.
Direct production or delivery labor
COGS / cost of services
Tied directly to what is sold
Cloud services
OpEx or direct operating cost
It depends on how the service is used
Loan interest
Non-operating expense
Related to financing
Equipment purchase
Usually CapEx
Creates a longer-lived asset
SaaS subscriptions
Usually overhead
Ongoing software access
Marketing, rent, admin payroll, insurance
Overhead
Support wider operations
Raw materials
COGS
Direct production input
These examples also explain why the operating cost vs operating expense line can change with use. The same cloud or software provider can support client delivery in one case and internal operations in another.
Fixed and Variable Operating Costs
Fixed operating costs remain relatively stable within a given activity range and period. Rent, insurance, management salaries, and fixed software contracts are common examples.
Variable operating costs change with usage or delivery volume. Cloud consumption, transaction fees, hourly contractors, shipping, and some direct labor can increase as activity rises.
The same distinction applies to operational expenses. Fixed operating expenses may include office rent and salaried administrative staff, while variable operating expenses can include sales commissions and usage-based internal tools.
A variable operating cost may fall when the activity driving it declines. Reducing a fixed cost usually requires changing or ending the underlying commitment. Better use of existing capacity can lower the cost per unit of output without reducing total spending. A process mapping review can help identify the waits and repeated work consuming that capacity.
When an Operating Cost Becomes Margin Leakage
Extra project effort can reduce margin when its delivery cost is not covered by the agreed revenue. The contract determines whether the business can recover that cost.
On fixed-price work, additional revisions or underestimated tasks can increase delivery cost without increasing the fee. Under time-and-materials contracts, late or unapproved entries may delay billing. That delay alone does not establish a loss: leakage arises when chargeable work is ultimately omitted, discounted, or cannot be recovered.
To protect margins on fixed-price projects, teams need to identify extra effort while they can still revise the completion estimate, agree to additional scope, or adjust the remaining work.
Is the Extra Work Covered by the Fee?
Additional work uses time that the business pays for. Tolmete connects recorded effort with scope and delivery progress so managers can assess what the agreed fee covers and what needs a conversation with the client.
Are AI Tools an Operating Expense?
AI subscriptions and API charges may be operating expenses or service-delivery costs, depending on their use. An internal administrative tool may belong in overhead, while AI usage required to deliver a client service may belong in the cost of services. Whether expenditure qualifies for capitalization is a separate accounting question.
Classification shows where AI spending appears in the accounts. Assessing its value requires comparing the cost of licenses, API consumption, compute, and implementation with the work the tool replaces or supports.
That comparison is receiving closer attention. In July 2026, a Gartner analyst noted increased scrutiny of enterprise AI budgets, with a focus on usage efficiency, cost control, and measurable outcomes. For example, a $5,000 monthly service may be justified if the work it saves is worth more than the subscription and associated costs. Low adoption may leave the existing workload largely unchanged while adding a new expense.
The pricing model also affects that comparison. A fixed subscription spreads its cost across the work it supports, while usage-based charges rise with consumption. Management therefore needs to assess both what the tool contributes and how its cost changes with activity.
Operating Costs and Operating Expenses on the Income Statement
The placement of operating expenses on income statement reports depends on the presentation used. When cost of sales appears separately, it is deducted to calculate gross profit; operating expenses are then deducted to calculate operating income. The SEC’s financial statement guide explains this sequence.
Revenue
Revenue
Gross profit
Revenue − COGS / cost of services
Operating income
Gross profit − OpEx, in this simplified presentation
Net profit
Operating income adjusted for non-operating items, interest, taxes, and other applicable items
Tracking operating costs on income statement reports therefore requires reading across categories. Their components may appear in the cost of services, SG&A expenses, and other operating expense lines rather than one standardized total.
This presentation identifies which level of profit an expense affects. Consistent classification is necessary before comparing margins across periods.
Operating Costs, Operating Expenses, and Profitability
Revenue can rise while the economics of delivery get worse, even when every expense is recorded in the correct category.
An agency can increase revenue by 15% while labor rises faster because estimates are weak and additional revisions remain unbilled. The company is selling more, yet each dollar of revenue takes more work to produce.
Payroll alone will not explain the change. Management also needs to compare actual effort with the plan and read total spend against the revenue it was expected to support.
How to Control Operating Costs Without Cutting Expenses Blindly
Cost control requires consistent classification and evidence of what the spending supports. Production and delivery costs remain identifiable separately from the expenses of running the wider organization.
A process mapping review can expose waits, repeated approvals, and duplicate entry. Project businesses also need to compare all recorded labor and delivery costs with the estimate, agreed scope, completion, and expected billing. Work awaiting approval still consumes resources.
An AI project summary can bring current delivery context together before month-end. That context supports decisions to re-estimate remaining work, formalize additional scope, or change staffing. Effective decision making in management requires someone with the authority to act on those findings.
Need to know why a project is getting more expensive?
Tolmete brings project activity and commercial context together while the team can still adjust the remaining work.
Final Takeaway
An operating expenses vs operating costs comparison separates overhead from the wider cost of delivering and supporting the business. For service companies, the next step is to establish what the paid effort produced.
Rent, payroll, software, direct labor, and contractor fees can all be classified correctly, while rework, scope growth, poor utilization, or unbilled effort reduce the revenue those costs support.
Linking financial records to delivery activity shows which work drove the spend and where margin moved away from plan. Tolmete adds that operational context, so managers can trace the change to the scope, effort, and decisions that produced it.
FAQ
Frequently Asked Questions
Operating costs include production or service delivery and operating expenses under the broad definition used here. Operating expenses cover organizational support outside separately classified delivery costs. For a software agency, client-project labor may belong in cost of services and finance payroll in OpEx. The distinction helps locate the source of a margin change.
Operating expenses generally appear below gross profit when cost of sales is presented separately. They are deducted to calculate operating income. Classification must remain consistent across periods: moving delivery labor into administration can improve reported gross margin without changing total costs or operating income.
Yes, under the broad definition used in this article. Operating costs combine production or service-delivery costs with operating expenses. Before combining reports, finance needs to establish whether overhead is already included. Adding administrative payroll, rent, or software a second time would overstate the total.
COGS is separate from operating expenses under this article’s definition, although terminology varies. It includes the cost of goods sold and can contain direct production costs and allocated production overhead. Classification therefore depends on the cost’s function, rather than whether it is direct or indirect.
To calculate operating costs under the broad definition, add COGS or cost of services to operating expenses for the same period. For example, $420,000 plus $280,000 gives $700,000. Each cost must appear once. Consistent classification then allows comparison across periods, while project records help explain changes.
