The short version: hashtags on Instagram still have a job, but it’s a much smaller job than most of us were taught to believe, and it’s not the reach-boosting magic trick that hashtag courses sold you back in 2018. Use three to five tightly relevant ones for search, stop treating them as a growth lever, and put your real energy into Reels and captions instead.
What I tested with a real client
Two years ago I worked with a boutique candle brand in Kent, around 11,000 followers at the time, and the owner was convinced her stagnant reach was a hashtag problem. So we ran a proper test rather than guessing. Over 90 days we split her posts into three groups: 30 hashtags stuffed into the first comment, 5 tightly chosen hashtags in the caption, and zero hashtags at all.
The result surprised her more than it surprised me. Reach across all three groups sat within about 4% of each other. The posts that did best weren’t the ones with more hashtags, they were the ones posted as Reels with a hook in the first two seconds. Hashtags made almost no measurable difference to how far a post travelled.
What did change was who found her through search. The posts using 5 specific hashtags like #handpouredcandles or #kentsmallbusiness rather than generic ones like #candles or #love picked up a small but real trickle of new followers who’d typed those exact terms into the Instagram search bar. Not huge numbers, maybe 15 to 20 extra profile visits a week, but real people actively looking for what she sells.
Why the reach story changed
Instagram’s own head of app, Adam Mosseri, said plainly back in 2020 that hashtags work more like keywords than like a separate discovery feed. That statement quietly rewired what hashtags are for. They stopped being a lever you pull to get shown to strangers and became a tag you attach so the algorithm and the search function can categorise your content correctly.
That’s a completely different job. A keyword doesn’t push your post in front of more people, it helps the right handful of people find it when they’re already searching. If nobody’s searching for “#mumpreneurlife” then tagging it does nothing for you, no matter how many times you use it.
The uncomfortable bit the hashtag industry doesn’t want you to notice
Here’s the part that’s awkward for anyone who’s ever sold a hashtag strategy course or a hashtag generator tool: if hashtags barely move reach anymore, most of the advice built around “find your 30 perfect hashtags” is advice built for a platform that hasn’t existed for several years. There’s a whole cottage industry, hashtag research tools, hashtag banks, hashtag planning spreadsheets, still selling the promise of the old algorithm. I’ve used some of these tools myself and they’re not useless for organising tags, but they’re being marketed as growth engines when they’re really just filing cabinets.
I say this as someone who spent a chunk of 2019 telling clients to chase trending hashtags for reach. I was wrong, or at least the platform moved and I didn’t update fast enough. It’s worth being honest about that rather than pretending I always knew.
If you want to sense check your own tag choices rather than guessing, running them through something like a free hashtag checker at least tells you whether a tag is oversaturated, dead, or has any real search volume behind it, which is more useful than picking tags because they look popular in a screenshot someone shared.
Where hashtags still help
They’re not dead weight. Three places they still earn their spot:
- Search discovery, when someone types a specific term into the Instagram search bar rather than scrolling their feed
- Content categorisation, helping Instagram understand what your post is about, which feeds into who sees it in Explore
- Local and niche discovery, location-based or industry-specific tags like #manchestermarketing or #ukfreelancer, where the pool of people searching is small enough that showing up in it matters
They’re weak or worthless for broad reach, follower growth on their own, or making a mediocre post perform better. No hashtag saves a boring Reel.
Caption or comments, and does it even matter
People still argue over whether hashtags belong in the caption or buried in the first comment. I’ve tested both plenty of times and the honest answer is it barely moves the needle either way now, though there are small readability and workflow reasons to prefer one over the other depending on your niche. I’ve written a full breakdown of that specific question over on the site if you want the granular version, covering whether hashtags belong in the caption or the comments in more detail than I can fit here.
What to do instead of obsessing over tags
If I’m advising a client in 2026, hashtags get maybe 5 minutes of their planning time, not 50. Here’s the order I’d spend effort in:
- Get the first two seconds of your Reel right, because how many Instagram Reels you post and how strong your hook is matters more than any tag combination
- Write a caption that gives someone a reason to stop scrolling, not a caption that’s 80% hashtags
- Use 3 to 5 specific, searchable hashtags, mixing one niche tag, one local tag if relevant, and one branded tag
- Skip generic mega tags like #instagood or #photooftheday entirely, they’re too crowded for your post to ever surface in them
- Check performance monthly, not per post, because hashtag effect (what little there is) shows up as a slow trickle, not a spike
Platform discovery keeps shifting this way generally, it’s the same pattern that’s played out on other networks. The old idea that a hashtag or a follower count alone guarantees visibility has been fading everywhere, which is part of why understanding the shifting size and behaviour of platforms like the current Twitter/X user base matters more for strategy than obsessing over any single tagging tactic.
A simple test you can run yourself this month
Pick 12 upcoming posts. Use 3 to 5 tight hashtags on half of them and none on the other half, keep everything else (posting time, content type, caption length) as close to identical as you can. Check reach and profile visits after two weeks. If the difference is inside a few percentage points, which it usually is, you’ve got your answer for your specific audience, and you can stop worrying about it.
Frequently asked questions
Do Instagram hashtags still help with reach in 2026?
Barely. They help far more with search visibility for people typing specific terms than with broad reach, which is now driven mainly by Reels performance, watch time, and shares.
How many hashtags should I use on an Instagram post?
Three to five specific, relevant tags outperforms thirty generic ones in almost every test I’ve run, because tightly targeted tags match real searches while broad ones get lost in an oversaturated pool.
Are hashtags a waste of time on Instagram now?
Not a total waste, but they’re a small, low-effort task rather than a growth strategy. Spend most of your planning time on the content itself and give hashtags a few minutes at the end.
Should hashtags go in the caption or the first comment?
Either works and the performance difference is small, though putting them in the caption keeps everything visible in one place, which some audiences prefer for readability.
