Where Exactly Should You Put Your Instagram Hashtags for Best Results

The short version: put your hashtags in the caption itself, straight after your last sentence, not buried in the first comment, because Instagram now reads them the moment you publish rather than crawling back for them later. That said, placement is worth about five minutes of your attention and no more, because the platform stopped caring which box the hashtags sit in years ago. What moves your reach is the first line above them.

More on this here: why instagram only lets you use 5 hashtags some posts.

Where hashtags work best right now

I get asked this constantly on calls, usually by someone who's convinced their reach is down because they've been "hiding" hashtags in the wrong place. So let's settle it straight away: caption or first comment, either works, and Instagram has confirmed more than once that it treats them the same for discoverability. Adam Mosseri said as much in a Q&A back in 2022 and nothing has changed since. What matters is that the hashtags exist somewhere on the post within the first hour of it going live, because that's the window Instagram uses to decide who else to show it to.

So here's my actual recommendation, not because it changes the algorithm, but because it changes how humans read your post: put three to five hashtags at the end of your caption, after a line break or two, not crammed into your opening sentence and not dumped in a comment that half your followers will never scroll down to see. The first comment trick was useful in 2018 when people thought a wall of hashtags looked spammy. It still looks a bit spammy in the caption if you're not careful, which is the only real argument for the first comment method now, tidiness, not reach.

What I tested with a real client over 30 days

I worked with a client, I'll call her Sarah because that's not her name, who ran a small online cake business out of Surrey. She was convinced her hashtags in the first comment were "getting lost" and that moving them into the caption would fix her stalled reach, which had sat around 400 to 600 impressions per post for two months. We ran a proper test. Ten posts, five with hashtags in the caption, five with hashtags in the first comment, same posting time, same five hashtags used for each pair (things like #homebakeruk, #cakedesign, #surreybusiness), tracked through Instagram Insights.

Reach across the caption group averaged 587. Reach across the first comment group averaged 561. That's a four percent difference, well within normal day to day noise for an account her size. Placement changed nothing that mattered. What did change something, in the same test window, was swapping her opening line from "New cake for a client this week" to "This took me four hours and I nearly cried twice." That post hit 1,340 reach, more than double her average, and it had the hashtags sitting in the first comment, the "wrong" place according to everything she'd read.

That's the bit worth sitting with. She spent three weeks worrying about hashtag placement and about ten seconds writing the line that moved the needle.

The part nobody wants to say out loud

Here's the uncomfortable truth most hashtag guides skip over because it makes the whole topic less exciting to write about: for most small accounts in 2026, hashtags contribute a small fraction of your reach compared to what they did five or six years ago. Instagram's own product team has said the majority of discovery now comes from Reels recommendations and interest-based feed placement, not hashtag search. You can put your hashtags in the caption, the first comment, tattooed on your forehead, and if the first three seconds of your Reel or the first line of your caption doesn't earn attention, none of it matters.

I say this as someone who used to teach hashtag strategy as a headline topic on stage. It worked in 2016. It's a minor lever now, not a major one. If you're spending more than five minutes a week thinking about hashtag placement, that time would do more for your account spent looking at your actual engagement rate and working out which posts are underperforming and why.

Instagram Stories: a slightly different rule

Stories are the one place placement does something, because of how the hashtag sticker works mechanically rather than algorithmically. If you add a hashtag sticker to a Story, that Story can appear in the hashtag's Story feed, giving you a small extra chance of discovery beyond your own followers. Where it sits on the screen doesn't affect reach, but size does slightly, because a tiny, shrunk down sticker tucked in a corner still counts for discoverability even though it's barely readable, which is why you'll see accounts hiding a hashtag sticker behind an emoji or a GIF. It's not cheating, Instagram allows it, it just looks tidier.

My rule for Stories: one hashtag sticker per Story, placed somewhere it won't cover your face or your product, sized small enough not to dominate the frame. Anything more than one hashtag sticker starts to look cluttered and does nothing extra for reach.

A simple step-by-step way to test this on your own account

Don't take my word for it or anyone else's. Test it yourself over four weeks, it takes almost no extra effort:

• Pick eight upcoming posts and split them into two groups of four, matched roughly for content type (product shot, behind the scenes, quote, etc).
• Use the exact same three to five hashtags for every post in the test, so hashtag choice isn't a variable.
• Group A: hashtags in the caption after a line break. Group B: hashtags in the first comment, posted within two minutes of the main post.
• Post at your usual best time; if you're unsure when that is, check when the best time to use hashtags is for your account rather than guessing.
• After 30 days, pull reach and impressions for each post from Insights and average each group.
• Compare the two averages. If they're within ten percent of each other, placement isn't your problem, stop testing it and move on to your hooks and your posting consistency instead.

I've run some version of this test with six different clients now. Every single time, the gap between caption and first comment placement has been under ten percent. Not once has it been the deciding factor in a reach problem.

What matters more than placement

If placement isn't the lever, here's where I'd point your attention instead, in order of impact:

• Your opening line. The first eight to ten words decide whether someone taps "more" or scrolls past. This mattered more in Sarah's test than anything else we changed.
• Posting consistency. Instagram still rewards accounts that show up on a regular rhythm over accounts that post in bursts. If you're inconsistent, planning and scheduling your posts will do more for your reach than any hashtag change.
• Hashtag relevance, not hashtag placement. Five hashtags that describe exactly who your post is for beat thirty generic ones every time. #ukcakemaker beats #cake, #love, #instagood stacked together, because Instagram is trying to match your post to people likely to engage, not just people who typed a word into search.
• Knowing your baseline. You can't tell if something worked if you don't know your normal numbers. If your reach has quietly slipped over the last month, it's worth working out why your engagement might be dropping before you blame hashtags for it.

Day and time still matter too, and they're easier to get wrong than hashtags. If you're posting your best content on a Friday afternoon when half your audience has switched off for the weekend, that's a bigger loss than any hashtag decision, and it's worth checking the real numbers on Friday posting before you assume it's a good slot.

My actual working method

For what it's worth, here's exactly what I do on my own account and tell clients to copy: write the caption fully, first line doing the work of grabbing attention, then two line breaks, then three to five specific hashtags that describe the post, industry, and rough audience. No first comment step, because it's one extra thing to remember and forget, and the reach difference doesn't justify the extra click. If you want a fuller run through of caption structure end to end, I've written a full walkthrough on how to write and schedule an Instagram post for your business that covers this in more depth than placement alone ever will.

The placement question feels solvable, which is exactly why it gets so much attention. It's a small, controllable thing when the bigger questions, is this content good, is this the right hook, does this audience even want cake content on a Tuesday, feel much harder to answer. Fix the caption before you fix the comma.

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I built a free Instagram hashtag checker for exactly this.

Frequently asked questions

Should hashtags go in the caption or the first comment on Instagram?

Either works for reach, Instagram treats them the same, so pick whichever looks tidier to you; caption is usually simpler because it's one step, not two.

How many hashtags should I use in 2026?

Three to five specific, relevant hashtags outperform a wall of thirty generic ones, because relevance to your actual audience matters more than volume now.

Do hashtags on Instagram Stories work differently to feed posts?

Yes, a Story hashtag sticker can get your Story shown in that hashtag's Story feed regardless of size or position, which is a genuine placement effect, unlike feed post captions.

Why isn't my reach improving after I moved my hashtags?

Because placement rarely is the problem; check your opening line, your posting consistency, and your actual engagement rate before assuming hashtags are the fix.

Primary sources

• Instagram's own Help Centre
• Meta's Business Help Centre