Black Friday Ad Costs in France: CPM Up 78%, CPA Down 29%

Every November the same question comes back: is Black Friday still worth it when media costs explode? We looked at our own numbers. This is first-party data, cumulated across the French accounts Scalebay manages, for Q4 2025. No survey, no benchmark bought from a third party: these are the numbers we see in the ad accounts.

The short answer: Black Friday costs more to reach people, and less to convert them.

Black Friday advertising data in short

• Meta CPM rises 78% in Black Friday week in France (€4.11 to €7.33), according to Scalebay first-party data for 2025.
• CPM inflation starts a week before Black Friday (+23%) and lasts until Christmas (+56% in mid-December).
• A dedicated Black Friday offer converts 2.7 times better than always-on campaigns on Google Search (6.0% vs 2.2%).
• Cost per acquisition falls 29% during Black Friday (€36 to €26) even though cost per click rises 92%.
• The week before Black Friday is the most efficient of all: 9.4% conversion rate and a €14 CPA, less than half the Black Friday week CPA.
• Best Black Friday strategy: a real offer, dedicated creative, budget concentrated on high-intent channels, and a window extended to Black Week or Black Month.

Key figures at a glance

• Meta CPM, France: Baseline (6 Oct – 16 Nov) €4.11, Black Friday €7.33, Change +78%
• Weekly Meta spend: Baseline (6 Oct – 16 Nov) €5.6k, Black Friday €11.0k, Change ×1.95
• Programmatic CPM (DV360): Baseline (6 Oct – 16 Nov) €0.64, Black Friday €1.57, Change +147%
• Google Search CPC: Baseline (6 Oct – 16 Nov) €0.81, Black Friday €1.56, Change +92%
• Search conversion rate: Baseline (6 Oct – 16 Nov) 2.2%, Black Friday 6.0%, Change ×2.7
• Search CPA: Baseline (6 Oct – 16 Nov) €36, Black Friday €26, Change −29%

Baseline is the six weeks before the offer. Black Friday week is 24–30 November 2025; the offer window is 17–30 November.

How much does CPM increase during Black Friday in France?

On Meta, cumulated CPM across our French accounts went from €4.11 to €7.33 in Black Friday week: +78%, while weekly spend almost doubled (×1.95). On programmatic display the jump was steeper: +147%, on spend multiplied by 4.4.

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Two details matter more than the peak itself:

• CPM rises before you do. The week before Black Friday, CPM was already +23% while our spend was slightly below baseline. The inflation comes from the market, not only from your own budget.
• CPM stays high after you stop. In mid-December, with spend back to baseline, CPM was still +56%. Q4 inflation runs from mid-November to Christmas, not for one weekend.

A practical rule for planning: budget Q4 CPMs at 1.5× to 1.8× your October level.

Does a Black Friday offer really convert better than always-on campaigns?

Yes, and by a wide margin. On Google Search, we compared the always-on campaign (what we call the "fil rouge") with the dedicated Black Friday offer campaign, on the same keyword universe.

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• Cost per click: €0.81 → €1.56 (+92%)
• Conversion rate: 2.2% → 6.0% (×2.7)
• Cost per acquisition: €36.4 → €25.9 (−29%)

Clicks cost double. Acquisitions cost a third less. Volume followed: from 19 to 286 conversions a week on Google Ads, 15× the volume on 5.9× the spend.

One control point makes this more convincing. An ordinary October promotion on the same campaign converted at 2.1%, with a €60 CPA. So it is not "any promotion" that moves the rate. It is a strong offer at the moment people expect one.

What happens to CPA on each channel?

• Google Search (offer vs always-on): Media cost CPC +92%, CPA before €36, CPA during €26, Change −29%
• Meta conversion campaign: Media cost CPM +78%, CPA before €195, CPA during €49, Change −75%
• Programmatic (DV360): Media cost CPM +147%, CPA before €61, CPA during €59, Change −3%

The pattern is clear: the weaker the intent, the more the offer has to work. On Search and Meta, CPA fell sharply. On programmatic, where CPM inflated the most, the offer only kept CPA flat.

Black Week and Black Month: why you should start before Black Friday

Many shoppers wait for Black Friday to buy. They have the product in mind for weeks and hold the purchase until the offer appears. Our data shows what happens when the offer goes live early.

We opened the offer on 17 November, eleven days before Black Friday itself. Compared week by week on Google Search:

• Always-on baseline: CPC €0.81, Conversion rate 2.2%, CPA €36
• Black Week (17–23 Nov, offer live): CPC €1.36, Conversion rate 9.4%, CPA €14
• Black Friday week (24–30 Nov): CPC €1.61, Conversion rate 5.3%, CPA €30

The week before Black Friday was the most efficient of the whole quarter: the demand was already there, waiting, and the auction was not yet at its peak. Conversion rate was 4 times the baseline and CPA was less than half the Black Friday week level.

What this means for your plan:

• Black Week (the 7 to 10 days before) captures people who are ready to buy and only need the offer. You pay lower CPCs and CPMs than on the Friday itself.
• Black Month (from early November) works well for considered purchases and for building the audiences you will retarget in the peak. Use early-access lists, waitlists and "offer coming" creative.
• Keep the peak for the peak. Extending the window does not replace Black Friday week: volume is still highest there (261 conversions vs 95 the week before). It adds efficient volume around it.
• Do not stop on Monday. CPMs stay high until Christmas anyway, so a Cyber Week extension or a "last chance" phase uses the audiences you just paid to build.

How to build a Black Friday offer that converts

The data is clear that the offer drives the result: an ordinary October promotion converted at 2.1%, the Black Friday offer at 6.0% to 9.4%. What we recommend:

1. Make it your best offer of the year, and say so. People compare. A discount they have already seen in September will not move them.
2. One offer, easy to understand in two seconds. One price or one percentage. Avoid tiers, codes and conditions.
3. A real deadline. State the end date in the ad and on the landing page. Urgency must be true to be credible.
4. A dedicated landing page. Same message, same price, same visual as the ad. No navigation to anything else.
5. Plan the sequence. Teaser and early access in Black Month, full offer in Black Week, peak on Black Friday, last chance on Cyber Monday.

Why Black Friday needs a dedicated creative strategy

With CPMs up 78%, every impression costs almost double. Recycled always-on creative wastes the most expensive impressions of the year. Black Friday creative has a different job: it does not need to explain the product, it needs to announce the offer to people who already know what they want.

• Offer first. The price or the discount is in the first second of the video and in the first line of the text. Brand story comes second.
• Make it look like Black Friday. A distinct visual code for the period (colour, badge, countdown) so the ad is recognised as a deal at a glance.
• Produce volume before the peak. At least 3 to 5 concepts with several formats each (static, short video, carousel). Creative fatigue arrives in days, not weeks, at peak frequency.
• Test in Black Month, scale in Black Week. Use the cheaper early weeks to find the winners, then put the peak budget only behind proven creative.
• One creative set per phase. Teaser ("it is coming"), launch ("it is live"), urgency ("ends Sunday"), last chance ("final hours").
• Match search ads to the offer. Dedicated offer campaigns with the price and the deadline in headlines and sitelinks. This is the setup behind the ×2.7 conversion rate above.
• Retarget hard. Visitors and cart abandoners from Black Month are your cheapest Black Friday conversions.

Seven takeaways for your Black Friday plan

1. Price the inflation in. Plan CPMs at 1.5–1.8× October from mid-November to Christmas. It is a market effect and you will not escape it.
2. Judge on CPA, not on CPM or CPC. Looking only at media cost leads to cutting budget at the exact moment it is most efficient.
3. The offer makes the CPA, not the media. Invest in the offer and its landing experience before adding budget.
4. Put incremental budget where intent is highest. Search first, then paid social, then display.
5. Concentrate, do not spread. We ran 2× to 4.4× baseline spend over two weeks rather than a thin uplift over six.
6. Build a dedicated offer and dedicated creative. Your best offer of the year, announced in the first second, with a visual code of its own.
7. Extend to Black Week or Black Month. Many buyers wait for this moment. In our data the week before Black Friday had the lowest CPA of the quarter (€14).

[IMAGE SPACE 4] Optional: summary visual of the seven takeaways. Suggested alt text: "Seven takeaways for Black Friday paid media planning"

Methodology

Scalebay first-party data across French client accounts, in EUR, weeks Monday to Sunday, Q4 2025. Conversions are platform-reported and not deduplicated across channels. The always-on Search campaign was paused during Black Friday week, so the offer comparison uses consecutive periods, not a simultaneous split. Only France-targeted accounts are included; multi-country accounts were excluded.

Questions and answers

How much do Meta CPMs increase during Black Friday in France?

In Scalebay first-party data across French accounts, Meta CPM rose 78% in Black Friday week 2025, from €4.11 to €7.33, while weekly spend went up ×1.95.

When does Black Friday CPM inflation start and end?

It starts about a week before Black Friday (+23% with flat spend) and lasts until Christmas: CPM was still +56% above baseline in mid-December.

Is Black Friday advertising still profitable if CPMs and CPCs go up?

Yes, if the offer is strong. On Google Search, CPC rose 92% but conversion rate went from 2.2% to 6.0%, so cost per acquisition fell 29%, from €36 to €26.

Which channel should get the extra Black Friday budget?

High-intent channels first. CPA fell 29% on Search and 75% on Meta, while programmatic display only held CPA flat against a 147% CPM increase.

Should I raise budget gradually or concentrate it?

Concentrate. Our accounts ran 2× to 4.4× baseline spend over a two-week window and got 15× the weekly conversions on Google Ads, rather than spreading a small uplift across the quarter.

How should I budget CPM for Q4?

Plan Q4 CPMs at 1.5× to 1.8× your October level from mid-November to Christmas, and evaluate the period on CPA rather than on CPM or CPC.

Is it worth starting Black Friday campaigns before Black Friday?

Yes. In Scalebay first-party data, the week before Black Friday (Black Week) was the most efficient of the quarter: 9.4% conversion rate and a €14 CPA on Google Search, versus 5.3% and €30 in Black Friday week itself.

What is the difference between Black Week and Black Month?

Black Week is the 7 to 10 days before Black Friday with the full offer live. Black Month starts in early November and is used for teasers, early access and audience building. Both extend the effect because many shoppers wait for this period to buy.

What makes a good Black Friday offer?

Your best offer of the year, understandable in two seconds, with a real deadline and a dedicated landing page. In our data an ordinary October promotion converted at 2.1% while the Black Friday offer converted at 6.0% to 9.4%.

Do I need specific ad creative for Black Friday?

Yes. With CPMs up 78%, recycled creative wastes expensive impressions. Use offer-first creative with a distinct Black Friday visual code, 3 to 5 concepts in several formats, tested in early November and scaled in Black Week.