Content4 min read
Where #ad Goes in a Caption, and Where It Quietly Fails
The first line, before anything else. Every other placement is a judgement call, and two of them have been ruled against — the hashtag block and anything below the fold.
Where to put
#ad in a caption has one safe answer: the first line, before anything else. That single placement satisfies every requirement at once — it is above the fold, outside the hashtag block, and impossible to miss. Everything else is a judgement call, and two popular placements have been ruled against.The three placements that fail
Inside the hashtag block. A label surrounded by twenty other tags reads as decoration rather than as a disclosure, and the UK's ASA has ruled against exactly this. It is also almost always below the fold, so it fails twice.
Below the "more" fold. Instagram cuts at around 125 characters, TikTok at around 90, LinkedIn at around 210. A disclosure that needs a tap to read is not conspicuous, which is the test every regulator applies.
In the bio, or a pinned comment. Neither travels with the post. A reader who sees the post in a feed sees neither.
FreeMentioned in this article
Disclosure Placement CheckerYou wrote #ad. This says whether anybody will see it.The checker names the character position of what it finds, so a fail points at a spot in your draft. It also flags the wording —
#sp, #collab and "thanks to" all look like disclosures to the person who wrote them and to nobody else.Where the fold actually falls
| Surface | Visible before "more" |
|---|---|
| TikTok caption | ~90 characters |
| Instagram caption | ~125 characters |
| LinkedIn post | ~210 characters |
| Threads post | ~280 characters |
| Facebook post | ~477 characters |
| YouTube description | ~157 characters |
| Pinterest Pin description | ~50 characters |
Pinterest is the tightest, and TikTok is the one people get wrong most, because the app's own buttons also cover the right-hand third of the screen. On TikTok the caption disclosure is a backup — put the label on screen in the video itself.
You can see where your own text is cut with the character counter.
Where to put the label in a caption that has to fit
A compliant opening line is shorter than people expect:
#ad — paid partnership with Acme Coffee
The grinder that finally fixed my mornings...Three things are true about it. The label is first. It names the brand, which is stronger than not naming it. And it costs about thirty characters of the ninety you have on TikTok, which is the real argument for a short label rather than a paragraph.
FreeMentioned in this article
Sponsorship Disclosure GeneratorThe right wording, and — the part that actually gets people in trouble — the right placement.The generator produces both a full version and a short one for exactly this reason, plus a spoken version for video.
Stories, video and live
Placement in a caption is only half the surfaces.
Stories need the label on every frame of the deal, not the first. Someone tapping in on frame three has seen nothing. Keep it clear of the UI chrome at top and bottom, and away from a link or poll sticker.
Short video needs it burned into the frame, held long enough to read, out of the right-hand third. Say it out loud if the endorsement is spoken.
Long video needs it at the start rather than in an end card, again at a mid-roll read, and in the first line of the description.
The full per-format list is in sponsored post disclosure, and the American rules behind it are in the FTC disclosure rules.
The FTC's own Disclosures 101 is explicit that a disclosure people have to look for is not a disclosure.
Where should #ad go in a caption?
The first line, before anything else. That single placement is above the fold, outside the hashtag block, and the only one no regulator has objected to.
Can I put #ad at the end with my other hashtags?
It is the placement most commonly ruled against. A label inside a block of tags reads as decoration, and it is usually below the fold as well.
Is #ad in my bio enough?
No. A bio does not travel with the post, and a reader seeing the post in a feed never sees it.
How many characters do I have before the fold?
Around 90 on TikTok, 125 on Instagram, 210 on LinkedIn and 50 on a Pinterest Pin description. Write the label for the tightest one you post to.
Paste the caption you are about to publish into the disclosure placement checker and it will tell you which of the six checks it fails.
Put it to work
Tools for the job you just read about
Free to run, most of them without an account.
FreeContent
Disclosure Placement Checker
You wrote #ad. This says whether anybody will see it.
Check →2 runs
FreeContent
Sponsorship Disclosure Generator
The right wording, and — the part that actually gets people in trouble — the right placement.
Generate →1 runs
FreeContent
Jargon & Acronym Detector
The words that make sense to you and not to whoever just arrived.
Detect →
FreeContent
Sentence Rhythm Analyzer
Why a draft with nothing wrong with it still reads flat.
Analyze →
FreeContent
Crutch Phrase Finder
The phrases you use every time, which you are the last to notice.
Find →1 runs
FreeContent
Weighted Character Counter
Why your editor says 240 and the post box says 287.
Count →1 runs
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