Long-term accommodation for a company: how to structure invoicing, cost centres and reporting (using a template-based approach)

Long-term accommodation for businesses It is often easy for procurement and HR to organise, but it can become surprisingly burdensome for financial administration if invoicing and reporting are not properly structured. When accommodation stays last for weeks or months, the same questions keep cropping up: which cost centre should the expenses be posted to, how do you get project codes onto the invoice, and how can you produce monthly reports without manual work? In this article, we’ll set out a clear framework: how to make invoicing, cost centres and reporting for long-term accommodation manageable and scalable.

Northern Apartments Oy (Hallituskatu 19 A 1, 90100 Oulu) offers short- and long-term accommodation for businesses in Oulu, Kempele and Rovaniemi. When accommodation forms part of project work or business trips, the benefits often only become apparent once the administrative framework is in place: the same structure works regardless of the employee, the team or the location.

Long-term accommodation for businesses: specify the “minimum details” for invoicing”

The essence of the template-based approach is simple: first decide which details are mandatory on every invoice, and only then allow for exceptions. When the mandatory details are standardised, there is no need to complete invoices retrospectively, nor does the accounts team have to guess where expenses belong. At the same time, you ensure that the processing of purchase invoices (approval, posting, allocation) remains predictable in terms of turnaround time.

A good starting point for a business is a “minimum information package”, which is compiled before the first stay and included on every invoice. In this case, it can be agreed that the invoice will always show at least the following: the name of the client company, the contact person, the dates of the accommodation period, the accommodation venue, the guest’s name (or team code), the cost centre and any project code. The information content of the invoice should be considered using the same logic as invoice processing: what information is required so that the invoice can be approved and recorded correctly without the need for further clarification.

If a company uses electronic purchase invoice processing, it is also advisable to embed the “minimum information” requirements into the process: who provides the cost centre and project code, in what format, and by when. In many organisations, the critical bottleneck is that the information does exist (with the project manager), but it does not make its way onto the invoice. When the information is included on the invoice at the supplier stage, unnecessary back-and-forth communication is avoided.

Cost centres and project codes: set up the rules before the need arises

Cost centres and project codes serve the same purpose: they make accommodation costs “reportable” and comparable. The difference is that a cost centre generally reflects the organisational structure (unit, team, office), whilst a project code reflects the work being carried out (project, site, client assignment). In the case of long-term accommodation, these can easily become confused if a single accommodation is used by several people or if the same person is working on several projects simultaneously.

A practical approach is to apply primary allocation and allow for exceptions. For example: (1) always one cost centre per guest per billing period, and (2) the project code may be split at line item level if the accommodation serves two projects in the same month. If splitting is not permitted, that too is a valid rule – the most important thing is that the choice is made consciously and the same principle is applied consistently. From a financial management perspective, “one clear rule” almost always trumps a “flexible but unclear” model.

When the cost centre and project code are based on an agreed model rather than case-by-case estimates, accommodation costs become reliable data in the monthly monitoring.

If you want to ensure that the allocation also complies with basic accounting principles, it is useful to review what cost centre monitoring and internal accounting actually entail. A good general overview can be found, for example, in the Wikipedia article on cost centres: Cost centre. You can then create a code structure suitable for your organisation (e.g. in the format KP-XXXX and PRJ-YYYYY), which is both human-readable and standardised for use by systems.

Long-term accommodation for a company and reporting: what does the finance department actually need each month?

Reporting is not just about “crunching numbers”; it supports decision-making. In long-term accommodation, typical monthly questions include: how much was spent on accommodation per project, per cost centre and per location, and what is the average cost per night’s accommodation or per person. When a report is needed quickly, every missing project code turns into a manual investigation – and at the same time, the reliability of the report decreases.

I recommend defining the “standard fields for the monthly report” in advance. These usually include: supplier, destination (Oulu/Rovaniemi/Kempele), accommodation, billing period, guest(s)/team, cost centre, project code, net amount, VAT and any additional services. Once the fields have been decided, the next step is to agree on how they will be structured: should some of the information go into the invoice’s message field, should some go into the line descriptions, and should the invoice have one line per guest or per accommodation unit?.

If reporting forms part of project management within your organisation, it is worth establishing internal links to practices relating to the optimisation of accommodation costs. On the Northern Apartments website, this is supported, for example, by an article on cost-effectiveness: Cost-effective accommodation for project teams. It complements this administrative model well when the aim is to bring budgeting and performance monitoring into the same discussion.

Invoicing template: a single template that works for different departments and locations

The template-based approach takes shape when you draw up an “invoicing brief”, which can be sent to a supplier or used as an internal guideline. The brief sets out what information must be included on the invoice and in what format. This can be a one-page document or an email template that the procurement team uses whenever a new accommodation period begins. The aim is for the same template to work for both project-based accommodation and short-term extensions without the process having to change each time.

A good model is also scalable: if a company adds new cost centres, the new codes are simply added to the list, but the structure of the invoice remains unchanged. If, on the other hand, a need for a new field is identified in the reports (e.g. “construction site” or “customer number”), the field is added to the template in a controlled manner – rather than each project manager coming up with their own way of entering data into the message field.

When choosing a template, also bear in mind the approval process: who approves the invoice and where they can view the information they need. If the approver can only see a preview of the PDF invoice, line-by-line reconciliation may be the clearest option in practice. If, on the other hand, the purchase invoice system automatically retrieves the reference, header-level reconciliation may be sufficient – provided it is consistent.

Monthly monitoring and managing deviations: draw up a checklist, no emergencies

Once the invoicing model is in place, the next stage is monthly monitoring. This does not simply mean reviewing the actual figures, but identifying any deviations: what has changed compared with the previous month and why. In the case of long-term accommodation, a deviation may be entirely normal (a project has started), but it may also be a warning sign: the accommodation period continued without a change of project, or the wrong cost centre was applied to the invoice. When checks are carried out every month using the same approach, errors are corrected quickly and there is no need to go back and sort out entries from months ago at the end of the year.

I recommend setting up a “three-tier” monitoring system: (1) automated – basic reports from the purchase invoice system by cost centre, (2) monthly financial management review – actuals versus budget for projects and units, and (3) operational monitoring by procurement/HR – accommodation periods, utilisation rates, and upcoming renewals. This way, the same data provides a view tailored to different roles without everyone having to create their own Excel spreadsheet.

Once this routine is in place, the reporting also helps with forecasting: what accommodation will cost in the coming months if the team size changes or the project moves from one location to another. If you’d like to explore this in more detail, particularly for those working in the Oulu area, it’s also worth looking at the available accommodation stock and location options: Apartments. Once the accommodation arrangements are known, the billing model can be agreed at the selection stage (e.g. one team code per flat).

Practical implementation with Northern Apartments Oy: best practices and points of contact

When arranging long-term accommodation with a supplier, it is useful to agree on a single point of contact and a single, consistent set of procedures. A single point of contact means that designated personnel from the company (e.g. procurement and finance) and the accommodation supplier’s contact person know who is responsible for changes: extensions, changes to personnel, changes to the invoicing period and additional services. The reference procedure, on the other hand, refers to an agreed string or structure that allows the invoice to be identified immediately (e.g. “PRJ-12345 / KP-210 / TIIMI-A”).

Northern Apartments Oy’s services (project accommodation and short-term accommodation) are well suited to companies with several mobile operations running simultaneously: construction sites, installation jobs and staff secondments. Once you have a template in place, it can be used for locations in Oulu, Kempele and Rovaniemi following the same approach. This reduces the need for “location-specific adjustments” and simplifies group-level reporting if there are multiple units.

If you’d like to see how accommodation is organised in practice from a business perspective (HR, line managers, day-to-day operations), you can find further internal reading material here: Accommodation for businesses in Oulu. When the operational and administrative models support one another, long-term accommodation for a company ceases to be merely a cost item and becomes a manageable whole: something that can be budgeted for, reported on and forecast.