What Is a Cost Center? Cost Center vs Profit Center

What a cost center means in practice

The idea comes from responsibility accounting, which ties each number in the books to the person who controls it. Cost, profit, revenue and investment centers are all responsibility centers: units with one manager who answers for their numbers. The OpenStax managerial accounting textbook defines a cost center as a part of an organization "in which a manager is held responsible only for costs." The unit doesn't sell anything, so its manager can't be judged on profit. The questions are whether spending stayed within budget and what the business got for the money.

Very small companies rarely need the term. When the owner signs every check, overhead, the general costs of running the business, is one pile and one person watches it. The idea earns its keep once an office manager, fleet manager or shop foreman controls a budget the owner doesn't review line by line. Once that budget has its own code, it can have its own report.

A cost center isn't a problem to fix. The office that dispatches calls and sends invoices earns nothing directly, but without it nobody gets paid. Ask a cost center whether it spent what was planned and delivered the service, not how much it made.

Cost center vs profit center

A profit center is a part of the business whose manager answers for both revenue and costs, and so for profit. OpenStax uses a single store of a coffee chain as its example, since the store manager controls both sales and spending. In the trades, a service division or an install division usually works this way.

The same textbook also describes revenue centers, which answer only for sales, and investment centers, which answer for profit and for the capital invested in them. Most small and mid-size businesses only need the first two.

Cost center and profit center examples for a contractor

Take the HVAC contractor from the opening. The service division runs repair calls and maintenance agreements. The install division replaces systems and does new construction work. Each has a manager who prices work and controls labor and materials, so each is a profit center with its own revenue and job costs.

Around them sit the cost centers. The office handles dispatch, billing and payroll. Estimating builds bids for the install division but doesn't sell anything itself. The fleet runs 18 trucks, and the warehouse orders and stores parts. All four have one manager and a monthly budget.

Individual jobs sit inside the profit centers. A $9,000 system replacement is one job in the install division, and its profit is tracked through job costing, which follows labor, materials and subcontractors job by job.

Worked example: one month at the contractor

Here is one month for the same company. To keep it short, estimating and the warehouse are folded into the office line.

The company made $44,900 before general overhead such as rent, insurance and the owner's salary: $68,000 plus $45,500 is $113,500, minus $41,000 and $27,600 of cost center spending.

Each manager gets a different question. Service kept 37.8% of its revenue before overhead ($68,000 divided by $180,000), while install kept 17.5% ($45,500 divided by $260,000), so the install manager's question is pricing and job costs. The office manager's question is the $2,000 overrun: a one-time software renewal, or a new monthly cost that should change next month's budget?

Spreading the $68,600 of office and fleet costs across the two divisions is cost allocation, a separate step with its own methods. It changes how each division's profit looks, not what the company earned.

Cost center and profit center examples for a property manager

A property management company sees profit centers from two sides: its own business, and the owners whose buildings it runs.

In the company's own books, the profit centers are usually built around fees. A firm might treat each portfolio or region as a profit center, with management and leasing fees as revenue and the property managers' pay as the main cost. The cost centers are the back office: accounting, the corporate office and IT.

The maintenance team can go either way. If its time is billed to owners under the management agreements, it earns revenue and acts like a profit center. If maintenance is included in the management fee, it's a cost center, and its manager's job is to stay within budget.

From an owner's point of view, each building works like its own profit center. Rent comes in, repairs, utilities and the management fee go out, and the owner judges the manager on what's left. The management company's own cost centers never appear on that owner's report.

How to set up cost centers in your books

Don't build cost centers into the chart of accounts. Separate accounts for Fuel (service), Fuel (install) and Fuel (office) triple the list and break the first time you add a division. Keep one Fuel account and add a second tag that says which unit spent the money.

Most accounting software has a field for that tag. In QuickBooks Online it's class tracking, which Intuit describes as a way to represent important parts of your company, like departments or product lines. It is available on the Plus and Advanced plans. You can assign one class to a whole transaction or one to each line, and QuickBooks can warn you when a transaction has no class.

A few setup rules keep it useful. Give each cost center a short code and one named owner, set a monthly budget, and review spending against it every month. Leave shared costs such as rent, insurance and the owner's salary in a general overhead center instead of splitting them by guesswork; our guide to G&A expenses covers that kind of company-wide cost. For a business under 50 people, four to eight cost centers is usually plenty.

Common cost center mistakes

Most problems come from setup, not from the idea itself:

• Creating more centers than anyone will read, several of them without an owner.
• Judging a cost center on profit, which punishes the office for not selling anything.
• Tagging by whose card was used instead of what the purchase was for, so warehouse parts bought on the office manager's card land on the office.
• Redrawing the centers mid-year, which breaks every month-to-month comparison.
• Letting untagged transactions pile up, so real spending hides in an unassigned bucket.

Tracking cost centers day to day

Cost center reports are only as good as the tag on each purchase, and tags added at month-end are guesses. Clyr carries department as a coding field next to GL account, job and property, and its custom fields add a dropdown for any unit that doesn't fit, filled in at coding time by the person closest to the expense. Every custom field becomes a filter and a grouping in the report builder, and if you use QuickBooks classes, they sync along with the chart of accounts.

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