Fax and insurance: filing a claim within the deadline

Short answer: no insurer pays out on the strength of a fax alone, but the fax machine remains an excellent tool for starting the clock when time is running out. The initial notification of a claim within five working days (two working days for theft), when the customer portal is down, the branch is closed and the deadline falls tomorrow. Sending a document urgently requested by the claims handler — an invoice, a police report, a repair estimate — ahead of a committee meeting or the closing of a file. Challenging a settlement offer or a cancellation, when you want an immediate time-stamped record before confirming by registered mail. And transmission between professionals — loss adjuster, broker, approved garage, building manager — wherever no shared portal exists. For everything else, the official route remains the customer portal, the handler's email address or registered mail. The rule to carve in stone: a fax proves that you wrote in time; it does not prove what the insurer did with the document.

Why insurance deadlines are unforgiving

Insurance contracts are one of the few areas where a forty-eight-hour delay can cost you an entire settlement. Article L. 113-2 of the French Insurance Code requires the policyholder to "give notice to the insurer, as soon as they become aware of it and at the latest within the period set by the contract, of any loss likely to trigger the cover". That period cannot be shorter than five working days, except for theft, where it is reduced to two working days, and for hail or crop damage, where it is extended to four days.

The same article sets out the penalty: forfeiture of cover. It is not automatic — the insurer must prove that the delay caused it prejudice, and the forfeiture clause must appear in very conspicuous characters in the contract — but it exists, and it is applied regularly. The Cour de cassation has repeatedly made the point: the burden of proving the prejudice lies with the insurer, but the burden of proving the date of notification lies with the policyholder.

That is precisely where the game is won or lost. A policyholder who claims "I called on 3 October" with no record is helpless against a handler who logs the notification on 14 October. A policyholder who produces a transmission report dated 3 October at 6.42 p.m., showing the fax number of the company's head office and the number of pages sent, is in a different position entirely: they are dealing in evidence, not assertion.

The deadlines to know by heart

The periods vary with the nature of the event. The table below sets out the usual legal or contractual deadlines in France. Always check your policy wording: it may be more generous, never less.

Two pitfalls come up again and again. The first: working days exclude Sundays and public holidays, but not necessarily Saturdays, depending on the policy — so a loss discovered on a Friday evening leaves you, in practice, until the following Thursday or Friday. The second: the starting point is awareness of the loss, not its occurrence. A leak discovered on returning from holiday is notified from the date of return, provided you can demonstrate it — a train ticket, a hotel bill, a toll statement.

For natural disasters, the thirty-day period runs from publication of the interministerial order in the Journal officiel, available free of charge on Légifrance and relayed by the Géorisques portal of the French Ministry for Ecological Transition. Many policyholders notify too early, before publication, and then have to file again.

What a fax actually proves

Let us be precise, because the confusion is widespread. A fax transmission report establishes three things:

• that a connection was made between your line (or your online fax account) and a number dialled;
• on a given date and at a given time;
• for a specified number of pages, usually with a reduced preview of the first page.

It does not establish that the recipient read the document, nor that the content transmitted matches exactly what you claim to have sent — unless the service retains a full copy of the transmitted document, which serious internet fax platforms do.

Legally, this report amounts to prima facie written evidence within the meaning of article 1362 of the French Civil Code, assessed at the discretion of the trial judge. It does not carry the weight of a registered-mail acknowledgement of receipt, which enjoys a far more robust evidential regime. But it is infinitely better than an untraced phone call or an email sent to a generic address with no read receipt. We set out this hierarchy in detail in our article on the evidential value of a fax before a judge.

The winning strategy is therefore a hybrid one: fax on day one to lock in the date, registered mail straight after to secure the substance. The registered letter can go out the next day or the day after without harm, since the operative date is that of the first notification. State explicitly in the registered letter: "Confirmation of our fax dated 3 October 2026 at 6.42 p.m., sent to 01 XX XX XX XX."

Building a claim file that holds up

A sloppy notification costs more than a late one. The handler opens the file, finds three documents missing, sends a request, waits three weeks, and the loss assessment slips by a month. Here is what a notification fax should contain from the very first send.

Contract identification. Policy number, name of the policyholder, address of the insured risk, direct phone number and email address. A single wrong digit in the policy number is enough to make a fax vanish into the limbo of the mailroom.

A detailed description. Date and time of occurrence, date and time of discovery, nature of the loss, apparent cause, precise location within the building or vehicle. Write facts, not interpretations: "damp patch on the bedroom ceiling, pipework in the flat above" rather than "the neighbour has messed things up again".

A provisional assessment of the damage. List of damaged items, estimated value, and the explicit wording "provisional assessment, subject to expert appraisal". Never commit to a final figure on day one.

Third parties involved. Name, address, insurance company and policy number of the presumed liable party, references of the accident statement, number of the police report for a theft or act of vandalism.

Attachments. Photographs of the damage, purchase invoices, repair estimates, accident statement, police report, plumber's report. For photos, print them in high-contrast black and white: a fax renders shades very poorly, and a dark shot arrives illegible. Number every page "1/9, 2/9…" so the recipient immediately spots a missing page.

A portable sheet-fed scanner is a life-changer for anyone who has to digitise a stack of invoices without heading to the office photocopier. For home insurance claims, a compact waterproof camera or simply a protected smartphone comes in handy when you need to document damage in a flooded cellar.

Finding the right number — and not sending it to the wrong place

Insurance companies have cut back their fax numbers sharply since the gradual shutdown of the switched telephone network. Some have scrapped them, others have kept them at national claims-department or complaints-department level. Three reflexes:

1. Look at the policy wording and the certificate of insurance: the number is often still there, even when it has disappeared from the website.
2. Call the switchboard and ask for the claims department number, noting the name of the person you spoke to and the time of the call.
3. Check the local branch address: a general agent or broker almost always keeps a fax line or an online fax reception service, and will forward to head office.

If no number exists any more, do not force it: switch to email with a read receipt, backed up by qualified electronic registered mail. The rule is not "fax at all costs", it is "notify in a way that can be dated". Our available countries page lists the destinations covered for policyholders living outside France or insured with a foreign company.

Watch out for the special case of the broker. Notifying the broker counts as notifying the insurer under most mandates, but not always. If in doubt, fax both. The cost of one extra transmission is trivial compared with a refusal of cover.

Confidentiality: what a claim fax really carries

A claim notification contains sensitive data: the home address, dates of absence, an inventory of valuables, sometimes medical certificates under personal protection or accident cover. A conventional fax lands in a shared output tray, in an open-plan office or a branch. Three precautions are worth taking.

Never attach a detailed medical certificate to a notification sent to a non-dedicated fax: send it separately to the company's medical adviser, in a sealed envelope marked "medical confidentiality". The CNIL regularly points out that health data falls under article 9 of the GDPR and calls for enhanced security measures.

Redact what is not needed: full bank details, social security number, a complete identity document. A "confidential" rubber stamp on the cover sheet and an office guillotine to destroy drafts cost less than thirty euros and prevent most household leaks.

Finally, archive everything. Transmission report, copy of the document sent, registered-mail acknowledgement of receipt: three files to keep for at least two years, the two-year limitation period under article L. 114-1 of the French Insurance Code, and ten years in cases of personal injury. An encrypted external hard drive or an expanding file kept outside the insured home — because a fire destroys the evidence of the loss too — settles the question.

After notification: the deadlines that run against the insurer

Once the notification has been received, the clock switches sides. The insurer has to meet its own deadlines, and that is where the record of your transmission becomes a weapon.

For natural disasters, article L. 125-2 of the French Insurance Code requires an advance payment within two months of submission of the estimated statement of damage or of publication of the order, and full settlement within three months. For standard property damage, the deadlines are contractual, often thirty days after agreement on the amount. In mortgage protection and personal protection insurance, the policy wording sets processing deadlines that the insurance ombudsman watches closely.

If the insurer drags its feet, a documented timeline makes all the difference. Referring the matter to the Médiateur de l'assurance — a free service, accessible online, competent for disputes with companies that are members of France Assureurs — relies almost entirely on dated documents. The same logic applies before the ACPR for professional misconduct, or before the judicial court to contest a settlement.

Frequently asked questions

Is a fax enough to notify a claim?

Yes, legally: the law imposes no particular form on a claim notification, unless the contract says otherwise. A phone call is legally sufficient. But a dated written form is the only one you can prove, and that is the whole point of a fax compared with an unrecorded call.

What should I do if I have missed the five-day deadline?

File anyway, immediately, and explain the reason for the delay: hospitalisation, extended absence, late discovery. The insurer can only invoke forfeiture if it demonstrates prejudice caused by the delay — for example, being unable to inspect the damage. A delay that is explained and documented is very defensible.

Does a fax replace the registered letter required by my policy?

No. If the policy wording requires a "registered letter with acknowledgement of receipt", send one. The fax then serves as prior notification demonstrating your diligence, not as a substitute. For contractual notifications in general, see our guide to online fax and contracts.

Can I fax a motor accident statement?

Yes, and it is common practice. Fax the copy signed by both parties, front and back, making sure the ticked boxes remain legible — the self-copying paper of the statement form reproduces poorly by fax. Keep the original: the insurer or loss adjuster may ask for it.

How can I prove exactly what my fax contained?

Use an internet fax service that archives the transmitted document as a PDF alongside the report. The combination of "time-stamped PDF + transmission report" is far more convincing than a mere printer slip. Practical questions about these services are covered in our FAQ.

In summary

• Deadlines are short and merciless: 5 working days as a general rule, 2 days for theft, 30 days after a natural disaster order.
• The starting point is awareness of the loss, not its occurrence — keep something that proves it.
• A fax locks in the sending date; it is not an acknowledgement of receipt. Always back it up with registered mail when the stakes are high.
• A complete notification from the very first send — policy, facts, provisional estimate, third parties, numbered documents — saves weeks of back-and-forth.
• Protect sensitive data: never send a detailed medical certificate to a shared fax, and redact bank details and social security numbers.
• Archive the transmission report, the document sent and the replies for two years minimum, ten years for personal injury.
• Once notification has been made, the deadlines bind the insurer: your dated timeline is the key exhibit before the Médiateur de l'assurance.