How to calculate product and service costs in Switzerland

At a glance

• Define the unit, included costs and realistic volume before applying a formula.
• Non-billable hours, losses and overheads also need to be financed.
• Full cost explains profitability; individual decisions also require an assessment of incremental costs.

Full cost, selling price and profit: start with clear definitions

Full cost combines direct costs with a justified allocation of the indirect costs required to provide the offer. For a sold product, this may include purchasing or manufacturing, distribution, selling and administration, depending on the model.

The selling price is what the customer pays. It also depends on perceived value, competition and positioning. Full cost is essential input for pricing, but does not alone determine what the market will accept.

The difference between the selling price excluding VAT and full cost represents unit profit under that model. It is not automatically accounting gross margin or the business’s net profit. Figures can only be compared when their scope is consistent.

Clear terminology prevents a common mistake: comparing one product’s margin after all costs with another’s margin after purchase price alone.

The full-cost formula and how to use it

The general formula is: total full cost = direct costs + allocated indirect costs. For a homogeneous unit: full cost per unit = total full cost / corresponding number of units.

“Corresponding” matters. Annual costs should be compared with annual volume. Batch costs should be divided by usable or saleable units, excluding lost units from the denominator. Costs of goods not yet sold should not be mixed without explanation with sales volume from a different period.

For a service, the unit may be a billable hour, client file, visit or project. Choose the unit that best explains resource consumption. An accounting firm may manage a simple tax return, a payroll file and an annual accounting engagement differently.

Full cost is a management model. It relies on allocation rules you should be able to explain. There is no universal overhead percentage suitable for every business.

Direct, indirect, fixed and variable costs: two different classifications

A cost is direct when it can be attributed to the offer without arbitrary allocation: goods purchased for an order, materials used, specific subcontracting or time recorded against a project.

A cost is indirect when it supports several offers and needs an allocation rule: rent, management, shared software, accounting or common support. A cost may be direct at department level but indirect at product level.

The fixed/variable distinction asks a different question: how does the cost respond to volume? A monthly salary devoted to one product range can be direct and fixed in the short term. Sales commission is usually direct and variable. Electricity may have both a fixed element and an activity-related element.

These classifications support two different decisions: measuring an offer’s full profitability and assessing an additional sale where capacity is available.

Calculate full cost in six steps

1. Define the object and period

Start with a precise question: the cost of a delivered product, a monthly subscription or a completed assignment? Record what is included and excluded, and the period. A workshop cost should not be presented as the full cost of delivery to the customer.

2. Identify resources consumed

Use invoices, salaries, time records, quantities, commissions and depreciation. Separate recurring costs from exceptional events. A one-off incident can be tracked separately; recurring returns or rework form part of the offer’s normal economics.

3. Assign direct costs

Attribute purchases, time and external services to the correct unit. For labour, use a consistent total employment cost rather than gross salary alone. Social security contributions, pension costs and other relevant employer costs should be included without double counting.

4. Group overheads

Create a few understandable groups: workshop, logistics, sales and administration. Avoid fifty cost centres if nobody can maintain the data. Three or four well-chosen groups can already improve decisions substantially in a small business.

5. Choose allocation bases

Link each basis to the resource consumed. Machine hours may explain workshop costs, order numbers preparation costs, and labour hours supervision. Allocating everything by revenue is simple but can penalise expensive products that require little work.

6. Reconcile and compare with actual results

Reconcile the costs used to accounting records and management adjustments. Explain differences such as an economic allowance for the owner’s work, excluded exceptional expenses, inventory timing or management depreciation. Then compare estimated and actual costs for several orders.

A management accounting system (French) helps organise this monitoring as the business grows. The initial aim is still a repeatable calculation the owner understands.

Worked example: full cost of a product sold

A small business imports 500 items and sells all usable items during the period. Twenty are lost or unusable, leaving 480 saleable units. All figures exclude recoverable VAT.

The full cost per unit is 16,000 / 480 = CHF 33.33. Dividing by 500 would give CHF 32 and conceal the cost of losses. At a selling price of CHF 45 excluding VAT, the batch produces 21,600 − 16,000 = CHF 5,600 under this model, or CHF 11.67 per unit sold.

The CHF 720 of variable costs assumes an average amount already calculated. If actual fees are a percentage of the selling price, update the cost when that price changes. Price and some costs can be linked; the model should not treat them as independent.

If only part of the batch is sold, distinguish remaining inventory cost from the cost of units sold. Paying the supplier does not mean all goods become expenses in that period under accrual accounting.

Volume can transform the result

Suppose CHF 3,120 of overheads remains fixed within the range considered. That is CHF 6.50 per unit at 480 units, but CHF 13 at 240 units. State whether the calculation uses actual volume, normal capacity or a budget.

For management purposes, allocating at normal capacity and showing unused-capacity costs separately can be helpful. It avoids automatically increasing prices each quiet month without understanding the variance.

Example: calculating the cost of a billable hour

A service business has one employee whose relevant annual employment cost is CHF 100,000. Allocated software, premises, administration and supervision cost CHF 32,000. The total to cover is CHF 132,000 a year.

The business estimates 1,650 working hours are actually available after budgeted holidays and absences. Of these, 450 go to training, internal work, prospecting and other non-billable activities. That leaves 1,200 billable hours.

The full cost per billable hour is 132,000 / 1,200 = CHF 110. Dividing by 1,650 would give CHF 80, but assumes internal work is sold to customers. Using theoretical hours without deducting absences would increase the error further.

This table does not mean every minute must be invoiced. It shows how sales capacity, organisation and less rework affect unit cost. The selling rate must then compensate the service and leave a sufficient contribution, according to your pricing method.

How should a self-employed owner’s time be treated?

In a sole proprietorship, private drawings are not an accounting salary expense for the owner. Nevertheless, evaluating the economic viability of services requires an allowance for the owner’s target remuneration in the management calculation.

Identify it as a management adjustment. Do not turn a private withdrawal into a deductible accounting expense. Economic cost tests whether the business actually rewards the owner’s work; accounting and taxation follow their own rules.

Example: costing a fixed-fee assignment

An agency plans an assignment requiring 30 hours at a full cost of CHF 110 per hour, plus CHF 500 of subcontracting and CHF 120 of specific direct expenses. Estimated cost is 3,300 + 500 + 120 = CHF 3,920.

The budget already includes two rounds of revisions. If actual time reaches 40 hours, cost rises to CHF 5,020. On a fixed fee of CHF 5,500 excluding VAT, planned profit falls from CHF 1,580 to CHF 480. The sale looks unchanged in the invoicing software, but its economics have changed.

Track hours consumed, rework and requests outside scope. Also distinguish a risk allowance in the estimate from profit. An allowance intended to absorb uncertainty is not guaranteed earnings.

Avoid double counting by checking what the CHF 110 rate includes. If software and administration are already covered, do not add a second general overhead allocation to the quotation.

VAT, investment, financing and inventory: accounting pitfalls

Recoverable VAT is normally not a cost

Where the business can deduct the relevant input VAT, purchases are analysed excluding that VAT. Non-recoverable VAT must instead be included according to its nature. Treatment differs for businesses not registered for VAT or activities without full deduction rights.

The amount invoiced including VAT is not entirely available revenue. Compare a VAT-exclusive price with costs measured on a consistent basis. Our Swiss VAT guide explains the principles to check for your situation.

An investment is not always consumed in one sale

A machine used for several years should not be charged entirely to the first order unless a specific analysis deliberately requires that approach. Allocate its economic consumption through consistent management depreciation, together with necessary maintenance and operating costs.

Repayment of loan principal is not an operating expense, although it uses cash. Interest is a financing cost; whether full cost includes it depends on the stated scope. Do not confuse costs, investment and bank outflows.

Inventory needs a consistent time basis

Buying ten months of goods in January does not mean January’s sales should bear the entire cost. Conversely, selling stock paid for last year does not make its cost zero. Follow the goods consumed or sold and include normal losses.

Management costing does not replace inventory valuation rules in annual accounts. Including selling expenses in full cost for internal decisions does not automatically permit capitalising them in accounting inventory values.

Use full cost without making the wrong commercial decision

An offer must sustainably finance the resources it consumes. But an individual decision may require a different view from average full cost.

Suppose a customer offers CHF 35 for a product with full cost of CHF 40 and incremental manufacturing and delivery cost of CHF 25. With genuinely spare capacity, the order could contribute CHF 10 towards fixed costs. It is not automatically worthwhile: check that it does not displace a better-paid sale, create hidden extra costs or undermine normal pricing.

Contribution analysis does not justify permanently selling all output below full cost. It supports a specific decision. The break-even point (French) then links fixed costs, contribution margin and the volume required.

Mistakes that most often distort the calculation

• Using gross salary without the relevant employer contributions and costs.
• Dividing by every paid hour as though all were billable.
• Omitting the owner’s time, returns or rework.
• Allocating overheads using a basis unrelated to consumption.
• Including the same expenses in an hourly rate and an additional percentage.
• Comparing VAT-exclusive costs with VAT-inclusive prices.
• Treating a cash outflow as an expense, or the reverse.
• Leaving a standard cost unchanged after reorganising or receiving a supplier price increase.

Set up simple monitoring and act on it

Keep a costing sheet for each offer showing volume, direct costs, allocation basis, overheads, unit cost and the actual net selling price. Add the date and assumptions. Update it when supplier prices, productivity or capacity change.

A monthly review can focus on four questions: has unit cost changed, is the average selling price as planned, does volume cover the organisation, and which action would make the greatest improvement? That may mean a price increase, better purchasing, clearer service scope or discontinuing a resource-intensive offer.

Good costing supports decisions and makes assumptions visible

The calculation becomes useful when it links real costs to an understandable unit. Define the scope, choose defensible allocation bases and check volumes. You will have a sound basis for pricing and improving margins.

Do not seek cent-level precision when hours or losses are unknown. Measure the items that change the decision first. Model quality depends more on those inputs than the number of decimal places displayed.

Frequently asked questions

Sources and references

• The examples and calculations in this guide illustrate a management accounting method; they are not sector statistics.
• Swiss Code of Obligations, SR 220: accounting and valuation provisions, including Articles 959 and 960 onwards.
• Federal Tax Administration: VAT.
• Entreprendre.ch: management accounting (French).