Charging costs in corporate groups: Separate companies and cost centres

For charging costs within a corporate group, you need two separate levels: the legal entity receiving the invoice and the internal allocation to cost centres or projects. A shared fleet portal can improve visibility, but it does not replace this distinction. First define which company signs contracts, who bears which costs and how charging across group companies is handled. Only then configure cards, users and reports.

Build the billing structure around the invoice recipient

Start with a list of the companies involved. Record their unambiguous names, the intended contracting party, billing address and responsible accounting team. Then add the cost centres within each company. A cost centre called “Sales” may occur more than once; without a company reference, it is not unique.

Define an internal company ID and combine it with the cost centre ID where needed. Vehicles, drivers and cards receive their own references. This structure prevents similarly named branches or departments renamed later from being merged in reports.

A central holding company may coordinate procurement while subsidiaries need their own invoices. Alternatively, one company may be the contracting party and recharge costs internally. Your finance team decides which model is suitable financially, for tax purposes and contractually, based on the specific structure. A consolidated technical overview is not evidence that every model has been implemented in an accounting-compliant way.

Distinguish organisation, charging location and cost bearer

A driver belongs to company A, visits a site run by company B and charges a company car whose costs are assigned to a shared project. In this session, the employer, site operator, vehicle assignment and internal cost bearer are different pieces of information.

The table describes a data model, not a minimum field list for every provider. Check which information is available and which your company must add. An export with a single freely labelled column may be sufficient for a simple fleet but inadequate for this multidimensional structure.

Decide where allocation should take place

There are two basic approaches: the provider already represents the desired organisational structure in the billing data, or your business performs a controlled allocation step after export. Both can work if responsibility, data quality and workload are clear.

With the first option, check whether separate invoice recipients, roles and analyses are possible within the agreed product scope. With the second, finance needs a complete source file and maintained allocation rules. Calculate the recurring work instead of treating it as a free side task.

The fact that multi-site billing is a design question in its own right is also illustrated by The Mobility House webinar on charging and cost allocation across multiple sites. The right solution follows from your group's actual charging and cost allocation flows, not just its number of charge points.

Explicitly test visits to another group company

A dedicated test should examine what happens when charging at another company site. Authorising the card initially proves only that access works. It does not yet answer which account is charged for the energy or whether an internal cost allocation is intended.

Describe the desired case in full: company A uses B's charge point; the record contains the vehicle and charging location; B's original costs and any agreed charge to A remain traceable. The responsible teams clarify the pricing basis, supporting records and tax treatment. If electricity is supplied for payment, the metering and billing requirements for the specific model must also be checked.

Avoid charging costs twice in management reporting. The site's electricity invoice and an internal recharge may concern the same energy quantity. In the group view, internal charges and credits must be handled according to the agreed logic. The original electricity purchase remains the starting point.

Maintain changes with an effective date

Employees move between companies, projects end and vehicles are reassigned. Do not store only the current position. For every relevant change, you need the date from which the new assignment applies and a traceable record of the previous assignment.

Suppose a vehicle moves from A to B on the 15th of a month. A charging session that took place on the 12th but was only reported on the 20th must not be assigned to B solely because of its receipt date. Define which timestamp determines internal allocation, and check whether your process can use it technically.

Do not correct historical costs by overwriting a current master-data cell. Record the change, its reason and the person responsible. If a closed period is affected, finance decides the appropriate correction route. Fleet management should not develop a separate parallel posting logic.

Close each company's accounts before building a group view

First check invoices by recipient. Reconcile amounts, transactions and additional fees. Then allocate them to internal cost centres. Only aggregate the results for the group once these levels are traceable.

The existing article on charging costs and consolidated invoices explains the basic month-end process. For corporate groups, add a dedicated checklist covering unassigned companies, visits to other companies' sites and changes during the month.

Report charging energy and costs separately. A site with low energy costs may still bear high infrastructure costs. A company with many public charging sessions cannot meaningfully be compared with another using total spend alone. Include vehicle counts and the charging mix so finance can interpret the differences.

Clarify roles and access before rollout

Define who may change master data, who can see invoices and who may only analyse their own cost centre. Group-wide administration should not automatically give every local accounting team access to all driver information. Ask for demonstrations of the proposed roles using real tasks.

Also name an owner of the organisational structure. Changes from HR, procurement and finance must come together at one agreed point. A monthly review of company and cost centre changes can prevent many later corrections, provided the process fits your volume of changes.

Prepare the billing workshop with real cases

StromNow Fleet describes central analysis of charging sessions by cost, driver, vehicle, location and cost centre. How your legal entities, invoice recipients and internal recharges are represented belongs in the clarification of the specific offer.

For a billing workshop with StromNow, prepare an organisation chart, two anonymised sample invoices and a charging case involving two companies. Add a vehicle transfer partway through a month. This makes it possible to check early whether the desired structure is covered by the offer or requires supplementary finance steps.