Ad Disclosure on Social Media: How to Label Correctly

As soon as there is compensation involved — money, free products, trips or any other benefit — you must clearly label your post as an ad. Under German law, the disclosure belongs at the very beginning, unmistakably worded as ‘Werbung’ (advertising) or ‘Anzeige’ (ad), and never buried in a hashtag cloud. This guide explains what the German UWG, the Interstate Media Treaty and the 2021 Federal Court of Justice rulings require, how to use the disclosure tools on Instagram, TikTok and YouTube correctly, and how to handle borderline cases like PR packages, affiliate links and tap tags.

The core rule: compensation means disclosure

In Germany, the disclosure obligation follows a simple logic: if you receive anything for a post — money, a free product, a trip, a discount or any other consideration — the post is advertising and must be recognizable as such. The value of the compensation is irrelevant, and so is whether you would have published the exact same content without the deal.

For the disclosure to hold up legally, it has to meet three conditions:

• At the beginning: the label must be visible before anyone engages with the content — in the first line of the caption, not hidden behind the ‘more’ click or at the end of the text.
• Unmistakable: the safest terms are the German words ‘Werbung’ and ‘Anzeige’. English or vague wording like ‘ad’, ‘sponsored by’ or ‘in cooperation with’ has repeatedly been judged insufficient by German courts.
• Not hidden: a disclosure sitting at position 17 of 30 hashtags does not do its job. It has to stand out from the rest of the text and be noticeable at first glance.

The same logic applies to video and story formats: in stories, you label every single slide of the collaboration, not just the first one. In videos, the notice belongs clearly visible at the start — for longer formats, ideally spoken as well. And in livestreams, which viewers join at any point, the disclosure should be displayed permanently or repeated at regular intervals.

The good news: properly labeled posts are completely normal by now. Users are used to collaborations — what annoys them is disguised advertising, not honest disclosure.

The legal framework: UWG, Interstate Media Treaty & the Federal Court

The disclosure obligation essentially stems from two sources. The German Act Against Unfair Competition (UWG) prohibits concealing the commercial purpose of a business practice — surreptitious advertising is unfair. The Interstate Media Treaty (Medienstaatsvertrag, MStV) additionally requires that advertising in digital media is recognizable as such and separated from the rest of the content; the state media authorities enforce this.

How these rules apply to influencers was clarified by the Federal Court of Justice in several landmark rulings in 2021. The core line:

• With compensation: if a creator receives money or any benefit of monetary value for a post, the post must always be labeled as advertising — no exceptions.
• Without compensation: if a creator posts about a product on their own initiative, it comes down to what German lawyers call excessive promotional character. A post only becomes subject to disclosure once it is overly promotional — for instance, when it exclusively praises a product’s benefits without any critical distance. A mere tap tag linking to the manufacturer does not by itself turn a post into advertising.

German lawmakers have since written this line into the UWG as well: without compensation, a commercial purpose benefiting third-party businesses is generally not presumed.

For day-to-day practice, the guideline published by the German state media authorities is the key reference: it translates the legal situation into concrete examples and case groups and is updated regularly. Before launching a new type of collaboration, it is worth checking — as of 2026, it is the benchmark the regulators themselves work with.

Platform tools: helpful, but no free pass

All major platforms now ship their own disclosure features:

• Instagram: the ‘Paid partnership’ feature places the label directly under your name — on posts, Reels and stories. The brand has to approve you as a partner — and, if you additionally allow it, can also run the post as an ad.
• TikTok: when uploading, you enable the commercial content toggle and select the option for paid partnerships — the video gets a corresponding label in the feed.
• YouTube: in the video details, you tick the paid promotion checkbox; YouTube then displays a ‘Includes paid promotion’ notice at the start of the video.

The crucial point is how to classify these tools: a platform tool does not necessarily replace the legal disclosure. The labels are sometimes small, disappear after a few seconds or do not show up on every playback surface — whether they alone satisfy the requirements of the UWG and the Interstate Media Treaty is disputed case by case.

The safe practice is therefore: both. You activate the platform tool and additionally add the classic disclosure — ‘Werbung’ or ‘Anzeige’ at the very beginning of the post. It costs nothing, covers both layers — the legal one and the platform policies — and matches the approach the state media authorities’ guideline suggests.

The reverse is just as true, by the way: writing ‘Werbung’ in the caption while ignoring the platform tool may violate the platform’s branded content policies — with possible consequences ranging from reduced reach to losing access to individual features.

Common borderline cases in practice

Most uncertainty does not come from paid deals but from the grey areas. The four most common cases:

• Self-bought product with a link: if you paid for the product yourself and receive nothing for the post, there is generally no disclosure obligation — as long as the post is not overly promotional. But as soon as an affiliate link is involved, a commission flows, and that is compensation: label it.
• PR packages: a free product is compensation too. If you show it in your content, you label the post — regardless of whether a posting obligation was agreed or the package arrived unsolicited. To see what professional seeding looks like from the brand side, check our PR packages service.
• Self-promotion: anyone promoting their own products, merch or course is acting commercially. Often that is obvious to viewers — in which case it is enough that the commercial purpose is clearly recognizable. When in doubt, make it explicit, for example with ‘Werbung in eigener Sache’ (self-promotion).
• Tap tags: merely tagging a brand via tap tag does not automatically turn a post into advertising under the Federal Court’s line. What matters is whether compensation flowed or whether the post comes across as overly promotional.

The rule of thumb for every grey area: when in doubt, label. An unnecessary disclosure has never hurt a post — a missing one can get expensive.

Typical scenarios at a glance

Simplified overview, no claim to completeness — the German state media authorities’ guideline provides concrete examples. When in doubt: label.

Consequences: cease-and-desist letters and more

Missing or insufficient disclosure is not a trivial offense but a violation of competition law — and in Germany, that is primarily enforced through cease-and-desist letters (Abmahnungen). Competitors, competition associations and consumer protection organizations can all send them. A cease-and-desist letter typically demands a declaration backed by a contractual penalty: you commit to not repeating the violation — and pay a substantial penalty for every further breach. Add the legal fees, and if the case goes to court, costs rise quickly.

In parallel, the state media authorities can pursue violations of the Interstate Media Treaty — from formal reprimands up to fines.

Important for brands: the responsibility does not rest with the creator alone. Companies commissioning collaborations can also be held liable for surreptitious advertising. Clean disclosure therefore belongs in every briefing and every contract — in our influencer marketing campaigns (from €5,000), it is a fixed part of both. If you are unsure how to build disclosure into your campaign workflow, get in touch with us.

And finally, the most important note: this article summarizes the German legal situation in general terms and to the best of our knowledge (as of 2026) — it does not replace legal advice. For specific questions, and at the latest after receiving a cease-and-desist letter, the case belongs in the hands of a law firm specializing in media or competition law.