Direct and Indirect Costs: What's the Difference and How to Allocate Them Across Services

Direct costs can be tied straight to a specific service: the specialist's pay, materials, small service items. Indirect costs are paid for the business as a whole: rent, utilities, subscriptions, taxes. Direct costs are added to a service in full, while indirect costs are spread across services by the time each one takes up.

Let's go through which cost belongs to which group, and see in numbers why allocating by the number of services gives a false picture.

In plain terms. Picture a shared apartment. Everyone buys their own food: those are direct costs, visible on a specific person. The rent and internet are paid by everyone together: those are indirect costs. It's fair to split them by how much time each person spends at home. In a business it's the same: rent is split between services by the time each one takes up.

What direct and indirect costs are

The check is simple: can you say exactly how much of this cost went to one service? If yes, the cost is direct. Material for a manicure is counted in portions, and the specialist's pay per service is known. If not, the cost is indirect: it's impossible to say how much of the rent falls on a single manicure.

The split into direct and indirect differs from the split into variable and fixed. Variable costs depend on the number of customers, fixed ones don't. These are two different splits, and they overlap.

Why indirect costs are allocated by time

The simple way is to divide indirect costs by the number of services. Let's see what comes out of that.

Picture a salon. Rent, utilities, and subscriptions come to $6,000 a month. In a month, service A, lasting 30 minutes, is performed 200 times, and service B, lasting 120 minutes, 50 times. The price of A is $50, the price of B is $200. The specialist is paid 40% of the price. Materials for A cost $5, for B $30.

Allocation by count. There are 250 services in total. $6,000 ÷ 250 = $24. Every service, both A and B, gets $24 of indirect costs.

Allocation by time. First we count the minutes that get sold: 200 × 30 + 50 × 120 = 12,000 minutes.

Cost per minute = Indirect costs for the month ÷ Minutes sold in the month

$6,000 ÷ 12,000 = $0.50 per minute. Service A takes 30 minutes, so it carries 30 × $0.50 = $15. Service B takes 120 minutes and carries 120 × $0.50 = $60.

By count, service A brings in almost nothing ($1, which is 2% of the price), while B looks far more profitable ($66, which is 33%). By time, the picture is different: A gives $10 (20%), B gives $30 (15%). The reason is that B occupies the workstation four times as long, and allocation by count doesn't account for that.

The total profit is the same in both cases, $3,500. Only the service it's attributed to changes. With a wrong allocation, it's easy to decide to raise the price of A or drop it from the price list, even though by percentage it's better than B.

Careful. Minutes are counted together with the break between customers: while the place is being cleaned, it's occupied. How to calculate the cost of that break is covered in a separate article.

What to do with disputed costs

Not every cost falls into its group right away. A few typical cases.

A tool that lasts several years. This is an indirect cost. Its price is spread over its service life, and the monthly share goes into overall costs.

Small service items. Tea or candy for a customer counts as a direct cost, but not for every service: not everyone uses them. So you count how often they're used, and a matching share lands on the service.

Advertising. It attracts customers in general, so it's more convenient to treat it as indirect.

If in doubt, it's convenient to classify a cost as indirect: then it gets allocated by time and doesn't get lost in the calculation.

How to calculate this from your own data

A manual calculation works as long as there are few services. With every change in rent or utilization, the cost per minute shifts, and the calculation has to be redone.

In BizCalc, direct costs are entered where they arise. You enter the service price and the specialist's pay (as an amount or a percentage) in the “Services” section. Material is entered with the package price, and the cost of a portion is calculated automatically. Small service items are entered as dynamic costs with a frequency in percent.

Indirect costs are entered as fixed: rent, subscriptions, and taxes with a period, for example once a month. The amount is spread over the month and allocated between services by the time a service takes, break included. In the “Services” section, a “Profit” column is visible alongside. In “Analytics: Calculation,” the breakdown by service splits the cost into four parts: pay, materials, small service items, and a share of overall costs. That way the direct and indirect parts are visible separately.

What's worth remembering

• A direct cost can be tied to a service. The specialist's pay, materials, and small service items land on the service in full.

• An indirect cost can't. Rent, utilities, subscriptions, and taxes are paid for the business as a whole.

• The direct/indirect split differs from the variable/fixed split. These are two different splits, and they overlap.

• Indirect costs are split by time. A longer service occupies the place longer and carries a bigger share.

• Allocation changes the picture, but not the total profit. In the example, the $3,500 total is the same, while each service's profit differs.

Frequently asked questions

How do direct costs differ from indirect ones?

Direct costs can be tied straight to a specific service, for example materials or the specialist's pay. Indirect costs are paid for the business as a whole, for example rent, and are allocated between services.

Is rent a direct or an indirect cost?

Indirect: it's impossible to say how much of the rent falls on one service without allocation. It's split between services by the time they take up.

Are direct and variable costs the same thing?

No. Variable costs depend on the number of customers, while direct costs can be tied to a service. Materials are both variable and direct, while rent is both fixed and indirect.

How do you allocate indirect costs across services?

By time. Indirect costs for the month are divided by the minutes sold, which gives the cost per minute. It's multiplied by the time the service takes.

Why can't indirect costs be split equally between services?

Because services take up the place for different amounts of time. A long service would get the same share as a short one, and the profit of both would be shown incorrectly.

Where do you put a cost if you're in doubt?

Among the indirect ones. Then it gets allocated by time across all services and doesn't drop out of the calculation.