Advance payment invoice, work progress statement, final balance: the artisan's guide to avoid mistakes

In brief: An artisan's advance payment invoice is a mandatory tax document as soon as a client pays a sum before the end of the construction project. It differs from a work progress statement, which spreads invoicing over several installments, and from the final invoice, which closes the file. On a construction project lasting several weeks, these three documents follow one another. Each has its own mandatory mentions. Mastering them avoids VAT errors, protects your construction project cash flow, and prepares your activity for electronic invoicing.

The three documents you will use on every construction project

On a construction project, money never comes in all at once. The client pays an advance at the start. Then come intermediate payments if the project lasts. Finally, a balance settles the end of the work. Each of these payments corresponds to a specific document. Confusing them leads to VAT errors and complicates cash flow tracking.

The advance payment invoice: much more than a simple payment request

An advance payment invoice is an accounting document that records a payment received before the completion of the service. Unlike a quote, it legally binds the artisan for tax purposes. It must include the same mentions as a classic invoice, plus the clarification that it is an advance payment. A quote has no accounting value. It describes an offer, not a collection. As soon as a client pays a sum before work, the advance payment invoice becomes mandatory, regardless of the amount. It also serves as proof if a disagreement arises over the amount already paid.

The work progress statement: your best ally on long construction projects

A work progress statement refers to an intermediate invoice that measures the actual progress of the construction project. It differs from an advance payment, often a lump sum fixed in the contract. The statement reflects what has been concretely achieved: percentage of progress, quantities installed, completed phases. It is not legally mandatory. But it becomes essential on long construction projects, in structural work or heavy renovation. Once the advance payment is collected, each statement invoices a new tranche of work, until the final balance. On a project lasting several months, it avoids waiting until the very end to get paid.

The final invoice: how to differentiate it from a simple receipt

The final invoice closes the construction project. It summarizes the total amount of the work, deducts the advance payment and the already invoiced progress statements, and displays the remaining balance due. A simple receipt only confirms a payment: it does not have the tax value of an invoice. The final invoice must include all sums paid since the beginning of the project, not just the last payment. If a discrepancy appears between the initial quote and the work performed, amendments or additional quantities, it must be justified line by line, not slipped without explanation into the total.

How much can I legally request as an advance payment before starting the construction project?

Many artisans hesitate about the amount to request before starting. The answer is twofold: what the law says, and what construction professionals actually do on the ground.

The legal framework: what French construction law says

French law does not set any absolute legal ceiling for an advance payment requested from a professional. Between two companies, the amount is freely negotiated in the contract. When dealing with a private individual, the consumer code regulates commercial practices. A disproportionate advance payment, demanded without any work being undertaken in return, can be challenged by the client. The project owner remains protected by the signed contract. The amount, payment schedule, and conditions of refund must be clearly stated before any collection.

In practice: industry standards and construction contracts

In construction practice, the advance payment most often ranges between 30% and 50% of the total amount of the quote. This percentage covers the purchase of materials and secures the start of the construction project. It is negotiated according to the size of the project and the amount of supplies to be advanced. For a small renovation, 30% is often sufficient. For a structural work project with an order for heavy materials, some artisans go up to 50%. The essential thing is to write this percentage down in black and white in the signed quote, before any collection.

Advance payment and retention guarantee: do not confuse them

Advance payment and retention guarantee have nothing to do with each other, even if both words evoke blocked money. The advance payment is paid by the client to the artisan before or during the construction project. The retention guarantee works in reverse. The client retains a portion of the payment, often 5% of the contract, until the lifting of reservations after acceptance of the work. For tax purposes, it is not invoiced as a negative advance payment. It reduces the amount paid on the final invoice, or is refunded once the reservations are lifted. For your cash flow, the distinction matters: an early collected advance payment helps you, a retention guarantee delays collection until the end of the construction project.

How to invoice an advance payment without risking a fine or reclassification?

A poorly drafted artisan's advance payment invoice is not just an administrative oversight. It can be reclassified or challenged by the client. A few simple rules are enough to avoid this.

Mandatory elements of a compliant advance payment invoice

An advance payment invoice must explicitly state "advance payment invoice" or "partial invoice", so as not to be confused with a classic invoice. It then includes the same information as a standard invoice:

• a unique invoice number, in your usual sequence;
• the issue date;
• your full identity and your SIRET number;
• the client's identity and the address of the construction site;
• a brief description of the work concerned;
• the amount of the advance payment, excluding tax and including tax;
• the applied VAT rate.

These mentions are not superfluous paperwork. They allow each advance payment to be linked to the correct construction project and quote, which facilitates the tracking of your collections.

VAT on advance payment: even under basic exemption, you need to know

If you are liable for VAT, the advance payment follows the rate applicable to the work concerned. Depending on the nature of the project, this rate is 10% or 20%. If you are under basic exemption, no VAT is added to the amount of the advance payment. However, the invoice remains mandatory and must bear the legal mention attesting to the absence of VAT. Omitting this mention, or invoicing VAT that you are not supposed to collect, exposes the invoice to reclassification.

Numbering, dates, project references: common pitfalls

The most frequent error observed among new artisans is to number advance payment invoices in a separate series from classic invoices. The result: at the time of statement n°2 or the final balance, no one can find the exact order of documents related to the same project. The good practice is to keep a unique and chronological numbering, all types of invoices combined. Add an identical project reference on the advance payment, statements, and final balance. Date each document with its actual issue date, never an earlier date to suit an accounting period.

VAT on advance payments under basic exemption: how does it work?

The basic VAT exemption changes the way an advance payment is calculated, not the obligation to invoice it. This is the point that many beginner artisans confuse.

Does the basic exemption exempt you from invoicing the advance payment?

No. The basic exemption exempts from collecting VAT, not from issuing an invoice. As soon as a client pays you a sum before the end of the construction project, the advance payment invoice remains mandatory, whether or not you are liable for VAT. The only difference lies in the invoiced amount: without VAT to add, the amount excluding tax and the amount including tax are identical.

Should VAT be mentioned on an advance payment invoice under exemption?

Yes, but not in the form of a rate or an amount. Your advance payment invoice must bear the legal mention indicating that VAT is not applicable, specific to the basic exemption regime. This mention replaces the usual rate. It must appear on each advance payment invoice, each statement, and the final invoice, as long as you remain below the exemption thresholds.

If the exemption threshold is exceeded during the construction project: who pays what?

For service provisions, the basic exemption applies up to €37,500 in annual turnover, with an increased threshold of €41,250. A long project can cause these amounts to be exceeded during the year. As soon as the threshold is exceeded, VAT becomes due on subsequent operations. The work progress statement or final invoice issued after the threshold is crossed must include VAT at the applicable rate. Advance payments and statements already invoiced without VAT before the threshold is exceeded are not retroactively corrected. The final invoice must clearly distinguish between amounts invoiced without VAT and those invoiced with VAT.

Sequencing work progress statements and the final invoice: the right method

A construction project lasting several months is rarely invoiced in a single step. Organizing the sequence of statements, then the final balance, avoids oversights and cash flow discrepancies at the end of the project.

How many work progress statements during a construction project?

No text imposes a minimum or maximum number of work progress statements. The rhythm depends on the duration of the project and your cash flow needs. On a project of a few weeks, an advance payment followed directly by a final balance is often sufficient. On a project of several months, a monthly or phase-based statement (foundations, structural work, finishing work) allows for payment as work progresses. Set this rhythm from the quote, so that the client knows what to expect at each stage.

Numbering and tracking: staying organized to avoid errors

Keep a clear sequence: advance payment, statement 1, statement 2, final balance, in chronological order and without gaps in numbering. Each document must reference the same project number or original quote. This traceability facilitates your accountant's work. It allows you to reconstruct, at any time, the amount already collected on a given project. It also serves as proof if a client disputes an amount invoiced several months after the work.

The final invoice: adjustments, retentions, and final payment

The final invoice includes the total amount of the contract, adds any amendments, then deducts the advance payment and all already settled statements. If a 5% retention guarantee has been applied, it must appear clearly, deducted from the amount to be collected at this stage, or already accounted for if it was deducted throughout the statements. The final amount must correspond exactly to what remains due, verifiable line by line. An imprecise final invoice remains the most frequent source of disagreement with a client at the end of a construction project.

Prepare your invoicing for the 2026 reform

Electronic invoicing is gradually coming into force. It's better to adopt good habits now, rather than changing everything at the last minute.

Factur-X: what changes for advance payments and work progress statements

As of September 1, 2026, all VAT-registered companies must be able to receive electronic invoices. This includes micro-enterprises under basic exemption. For issuance, the deadline is set for September 1, 2026, for large companies and ETIs, and September 1, 2027, for SMEs, VSEs, and micro-enterprises, the category where the majority of construction artisans are found. Factur-X is a file format that combines a readable PDF image and structured data usable by accounting software. Your advance payment invoices, work progress statements, and final invoices will all have to comply with this format, with the same mandatory mentions as today, converted into structured data.

Quickote génère vos factures au format Factur-X. Le raccordement à une Plateforme Agréée, nécessaire à l'émission obligatoire de septembre 2027, est en cours de finalisation.

Starting now: good habits to adopt

Adopt a sustainable, unique, and chronological numbering system before technical constraints force you to. Systematically include mandatory mentions on each advance payment and each statement, even for your smallest clients. Classify your quotes, advance payments, statements, and final balances by project, not just by date. Keep these documents for ten years from the closing of the fiscal year, the legal retention period for accounting records. These habits, adopted early, make the transition to electronic invoicing much simpler when the time comes.