How Do You Invoice Office Cleaning?

A cleaning invoice often fits on a single line: "Routine maintenance — March — €850 excl. VAT". The client approves it without reading, until the month an extra line appears. That is where most cleaning-sector invoicing disputes begin, and they almost always come from the same place: an exceptional job that was never approved in writing before it was carried out.

This article explains how an office cleaning invoice is structured, why the fixed monthly fee dominates, what regulation requires it to show, and what changes on 1 September 2026 when mandatory electronic invoicing comes into force. The deadlines and references cited were verified on the date of publication.

Fixed monthly fee or invoicing by time spent?

In recurring office cleaning, the fixed monthly fee applies to almost every contract. The reason is simple: the client is not buying hours, they are buying a standard of service. If an agent handles a floor in 1 h 45 rather than 2 h because the operation runs smoothly, the expected result is identical. Billing fifteen minutes less would make no sense for either party.

The fixed fee delivers visibility both ways. The client knows the budget to the euro across the financial year. The provider plans teams without recalculating each month, which matters when agents are salaried and rotas are built weeks ahead.

Invoicing by time spent keeps its place, but in a different register: restoration work, post-construction cleaning, emergency callouts, exceptional requests. In short, anything whose volume cannot be known in advance.

When needs change substantially — extended premises, headcount shifts, new areas — the right answer is a fresh site survey and a revised fee, not a permanent switch to hourly billing. Moving to time-and-materials creates an illusion of precision and costs everyone the benefit of predictability.

When to invoice, and what the lag really costs

Recurring contracts are invoiced in arrears, at the end of the month in which the work was performed. Some firms invoice in advance, particularly with smaller clients, but arrears remains the B2B norm.

That choice has a direct and rarely quantified consequence for the provider's cash position. Take a contract at €850 excl. VAT per month, of which roughly 60% is fully loaded payroll cost.

Forty-three days separate the payroll outflow from receipt of the corresponding invoice. Across a full portfolio, this represents a permanent financing requirement of roughly one and a half months of payroll. That is the structural working capital requirement of the sector, and it is why a cleaning company can show a healthy order book and still be under cash pressure.

Anatomy of a compliant cleaning invoice

An invoice between businesses must carry a set of details whose omission is penalised. Here is what must appear on a cleaning invoice in 2026.

Identification and amount details

Invoice number drawn from a continuous sequence, with no gaps or duplicates — a broken numbering sequence is among the most frequently flagged anomalies in a tax inspection. Issue date, identity and address of both parties, intra-community VAT numbers, precise description of the service, amount excl. VAT, VAT rate and amount, total incl. VAT.

Payment details

Due date or applicable payment term. Early settlement discount conditions, or an explicit statement that there are none. Late payment penalty rate. Fixed recovery indemnity of €40. These last two are mandatory in B2B, and in B2B only.

The four new details introduced by the reform

The e-invoicing reform changes invoice content, not only format. Four details become mandatory: the client's SIREN number where the client is VAT-registered — until now only the issuer's was required — the delivery address where it differs from the billing address, the category of the transaction (goods, services, or both), and the option to account for VAT on debits where applicable. For a cleaning company, the category is "services".

In practical terms, the service line on a cleaning invoice should always state the period, the site and the scope: "Routine maintenance — premises at 12 rue X, 75008 Paris — March 2026 — 3 visits per week". A line reading simply "Cleaning services" is fiscally compliant but useless in a disagreement.

E-invoicing: what changes on 1 September 2026

This is the nearest deadline and the most widely misunderstood. Two distinct obligations, two different timetables.

The point most often missed: the obligation to receive applies to everyone from 1 September 2026, including small and micro-businesses. Even if your cleaning company is only required to issue electronic invoices from September 2027, it must already be able to receive them from its own suppliers — telecoms, energy, product distributors, equipment hire — many of which are large enterprises required to issue from 2026.

This is no longer a question of PDFs. An electronic invoice under the reform is a structured data file passing through an accredited platform — formerly known as a PDP — in a standardised format: Factur-X, UBL or CII. A PDF emailed across does not satisfy the obligation. The French tax authority has published the list of the first accredited platforms, over a hundred to date.

For a cleaning SME, the work is rarely technical. It is organisational: checking that the existing invoicing software is compatible or offers a bridge, selecting an accredited platform, training whoever issues the invoices, and updating templates to carry the four new details. The cost depends almost entirely on the tool already in place: sometimes an update, sometimes a full replacement.

Work outside the contract: the rule that prevents disputes

Window cleaning, floor restoration, carpet shampooing, post-construction cleaning, emergency callouts: these fall outside routine maintenance and are handled differently.

Sound practice is a specific quote for a one-off job, or a contract amendment if the work becomes regular. On the invoice they appear on a line separate from the monthly fee, so the client immediately identifies what belongs to the original contract and what corresponds to an additional request.

The typical cleaning invoice dispute almost never concerns the amount. It concerns scope: the client believed the work was covered by the contract, the provider treated it as an additional request. Both are acting in good faith. The problem does not come from the invoice — it comes from a failure to formalise beforehand.

Public holidays, August closure, partial months

Months are not alike. May often carries three public holidays, August brings closures, the week between Christmas and New Year empties offices. Should the fee be pro-rated?

The dominant practice on annual contracts is a fee smoothed across the year. The client pays the same amount every month, whatever the distribution of holidays and closures set out in the contract. The logic is direct: the provider's costs are not smoothed. Salaries, supervision, equipment, vehicles and insurance run in August as they do in March.

Smoothing presupposes that the number of annual service days is defined at signature, along with the treatment of closures. An exceptional closure decided by the client outside the agreed conditions is assessed case by case — but the principle must be written down beforehand, not negotiated afterwards.

What VAT applies to office cleaning?

For professional cleaning of commercial premises, the rule is the standard rate of 20%. That covers virtually all B2B cleaning work.

Distinct regimes exist at the edges of the activity. Certain personal-services activities follow a different framework, which affects companies holding a personal-services accreditation for part of their business. Some construction subcontracting operations may fall under the reverse charge, which can arise where end-of-works cleaning is performed as a subcontractor to a construction firm.

Payment terms, late penalties and the €40 indemnity

French commercial law caps terms between businesses at 60 days net from the invoice date, or 45 days end of month where the contract expressly provides for it. In the absence of any stated term, the default is 30 days.

In practice, large accounts often impose 45 days end of month, sometimes 60 days, with internal approval circuits that add further real delay. SMEs generally pay faster.

What few directors calculate: the payment term is part of the price. Moving from 30 to 60 days on a contract at €850 excl. VAT per month, at a financing cost of around 8% a year, represents roughly €5.60 per month, close to €70 over the year. On an annual contract of €10,200 excl. VAT, that is equivalent to a hidden discount of around 0.7%. A client who negotiates both price and terms is negotiating twice.

Late payment penalties are due as of right from the day after the due date, with no formal notice required. Where no contractual rate is set, the rate is the European Central Bank refinancing rate plus 10 percentage points; a contractual rate cannot fall below three times the statutory interest rate. To this is added the €40 fixed recovery indemnity provided for by article L441-10 of the French Commercial Code, due per overdue invoice.

In sector practice, these provisions appear on invoices and in the terms and conditions but are rarely triggered automatically. The first step is always verification: an oversight, a change of contact, a blocked approval circuit. Most delays stem from an administrative problem, not a payment difficulty.

Six questions to ask before signing

They take five minutes and prevent most of the disagreements that surface around month six.

1. How many hours per visit does the fee cover? Without this figure, no comparison between quotes is possible.
2. How many service days per year are included, and how are closures treated? The answer belongs in the contract, not in a conversation.
3. What is explicitly outside the contract? Window cleaning, restoration, shampooing: the list must be written down.
4. What approval is required before additional work? Require a job sheet or written confirmation as a condition of invoicing.
5. What payment term, and does the contract expressly provide for 45 days end of month? Absent any mention, the statutory default is 30 days.
6. Which accredited platform for e-invoicing, and from when? An unavoidable question from September 2026 onwards.

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