Advertisers usually search for "turn off comments on Instagram ads" right after a spam wave hits a creative they are spending real money on. The good news: Instagram genuinely does have per-post comment controls, unlike Facebook ads where a true off switch does not really exist. The bad news: those controls do not reach every kind of ad, and using them costs you more than you might think. This guide covers where the switches live, what they do and do not affect, and the alternative that keeps the comments working for you.
Where Instagram's comment controls actually live
Meta moves these settings around, so treat menu paths as approximate; as of mid-2026 the controls sit in three places:
- On an existing post. Open the post, tap the three-dot menu in the top corner, and choose Turn off commenting. Existing comments are hidden and no new ones can be added. You can reverse it from the same menu at any time.
- When creating a post. On the final screen before you share, open Advanced settings and toggle Turn off commenting. The post publishes with comments disabled from the first second.
- Account-wide comment controls. In your Instagram settings you will find comment controls that let you restrict who can comment (everyone, people you follow, your followers), block comments from specific accounts, and enable Hidden Words — Meta's filter that hides comments containing offensive terms or custom phrases you define.
All three are built around your profile and the posts on it. That matters for ads, because many ads are not posts on your profile at all.
What this means for ads specifically
How much control you have depends on how the ad was made:
- Boosted posts. A boosted post is the same underlying post, just with budget behind it. If you turn off commenting on the post, the promoted version inherits that state. This is the one case where "turning off comments on an Instagram ad" works exactly as people hope.
- Dark posts built in Ads Manager. Ads created directly in Meta Ads Manager never appear on your profile grid — they are dark posts. There is no post on your profile to open a three-dot menu on, so the in-app toggle simply is not available. Meta has experimented with comment controls inside Ads Manager over the years, and the options you see can vary by account and objective — check your ad settings rather than assuming. In practice, most advertisers manage dark-post comments through moderation rather than a switch.
Account-wide Hidden Words and comment restrictions do apply broadly, but they are keyword and audience filters, not an off switch — and they cannot tell a scam link from a customer asking about shipping.
Why turning comments off costs you money
Even where you can flip the switch, think twice before you do:
- You delete your own social proof. Positive comments, tags, and genuine questions are social proof that your ad is buying alongside the impressions. An ad with a lively, healthy comment thread reads as trustworthy; a comment count of zero reads as suspicious to a cold audience.
- You silence buyers, not just trolls. A meaningful share of ad comments are buyer-intent comments — "is this available in a medium?", "do you ship to Ireland?". Turn commenting off and those people cannot ask, and most will not hunt down your DMs to do it. Run your own numbers: if an ad brings in a handful of purchase-intent questions a day and even a fraction convert at your average order value, that is real revenue you are switching off along with the spam.
- You blunt the feedback loop. Comments tell you which objections your creative is raising. Losing them means finding out from your conversion rate instead, which is a slower and more expensive teacher.
The alternative: moderate instead of mute
The problem was never the comment field — it is the worst comments in it. Moderation removes those and keeps the rest:
- Use Instagram's built-in filters as the floor. Turn on Hidden Words, add your own custom phrases, and restrict comments from accounts that follow nobody and were created yesterday. This catches the crudest spam for free.
- Hide, don't delete, what gets through. A hidden comment disappears for the public but stays visible to its author, so it rarely provokes a follow-up. Deleting is louder and harder to undo.
- Automate the loop for ads. ROAS Shield connects to your Instagram account through Meta's official API and processes every new ad comment as it arrives — including on dark posts you would never see in the app. It classifies each comment, hides what your rules flag as spam or abuse, and surfaces buyer-intent comments for a reply instead of burying them. AI replies are draft-only by default, and the default action is hide, not delete.
For the full workflow — finding every comment across dark posts, triaging, and replying — see how to manage comments on Instagram ads.
If you still want them off
There are legitimate reasons to disable comments — some regulated industries would rather have no thread than an unmoderated one, and some announcement posts genuinely do not need discussion. In those cases: turn off commenting on the organic post before boosting it, and for Ads Manager campaigns check whether your account exposes comment controls at the ad level. Just make the choice deliberately, with the cost in mind, rather than as a panic response to spam that a hide rule would have caught.
If you want the middle path — spam gone in seconds, buyers still able to talk to you — that is exactly what Instagram ad comment moderation with ROAS Shield is for. Plans start at £19/month; details are on the pricing page.