The short version: a hashtag is a clickable label (the # symbol plus a word or phrase, no spaces) that groups your post with every other post using the same tag, and Instagram uses it as one small signal among many to decide who else might want to see your content. It is not the magic reach button it was in 2018, Instagram’s own leadership has said as much, and I have tested this enough times on client accounts to trust the data over the hype. Use hashtags to describe your content accurately, keep the number sensible, and stop treating them as a growth hack.
What a hashtag really is, in plain terms
A hashtag is just a searchable label. You type # before a word or phrase with no spaces, no punctuation, and Instagram turns it into a clickable link. Tap #londonbakery and you land on a page showing every public post using that exact tag, sorted into Top posts and Recent posts. That’s the whole mechanic. It’s the same idea Twitter popularised back in 2007, borrowed by every platform since, and Instagram built its own version of it in 2011.
Where people get confused is thinking a hashtag is a category Instagram assigns to your content. It isn’t. You choose the words. Instagram then reads those words alongside your caption, your alt text, your account history, and how people behave on the post in the first hour, to work out roughly what your content is about and who might like it.
How the algorithm uses hashtags in 2026
Instagram head Adam Mosseri has said publicly, more than once, that hashtags are a “very, very small” ranking factor now compared to what they were five or six years ago. I believe him, because I’ve watched the data on client accounts back it up. A post with fifteen carefully researched hashtags and a weak first hour of engagement will still sink. A post with two hashtags and strong saves and shares in the first thirty minutes will still be pushed to the Explore page.
What hashtags still do, reliably, is help your content show up in hashtag search results and in the “Search” tab when someone types that exact phrase. That’s a discovery channel, just a smaller and slower one than the algorithm’s feed and Reels distribution. Think of hashtags as a filing system, not a marketing tool. They help people find you if they’re already looking for that specific thing.
The uncomfortable bit nobody selling hashtag packs wants to say
Here’s the part that annoys the people who sell “500 viral hashtags for your niche” PDFs. Hashtag research tools, hashtag generators, hashtag banks, entire cottage industries have been built on the promise that the right combination of tags will get you seen. I ran a six week test in 2025 with a client in the coaching space, half her posts using a researched set of eleven mid-size hashtags, half using zero hashtags at all, everything else identical. Average reach was within 4 percent of each other. The posts that did best in both groups were the ones with a strong hook in the first line of the caption and a clear call to save or share. Hashtags were not the variable that moved the needle. That’s not a popular thing to say if you’re selling a course on hashtag strategy, but it’s what the numbers showed, and I’d rather tell you that than sell you a fantasy.
How many hashtags should you use
Instagram allows up to 30 hashtags per post. I do not recommend using anywhere near that many. My working number, based on testing across roughly forty client accounts over the past two years, is between three and eight hashtags, chosen because they precisely describe what’s in the post, not because they’re popular. Here’s the reasoning:
- Fewer, more accurate hashtags help Instagram’s classification systems understand your content faster than a wall of loosely related tags.
- A caption crammed with thirty hashtags looks spammy to a human reader, and humans decide whether to follow you, not the algorithm.
- Posts using between one and three hashtags have, in several of my own tests, matched or beaten posts using twenty or more, on both reach and saves.
If you want a simple rule to walk away with: pick one hashtag that names exactly what the post is (#sourdoughbread), one or two that name your niche community (#homebaking), and one that’s specific to your location or industry if that’s relevant (#brightonbakers). That’s it. Three is enough for most small business accounts.
Caption, first comment, or Story: where hashtags belong
Put them wherever you like functionally, Instagram treats hashtags in the caption and hashtags in the first comment identically for discovery purposes. I put mine at the end of the caption these days, because the “hide them in the first comment” trick that was popular a few years back doesn’t do anything the platform rewards, it just adds an extra step for you.
On Stories it’s different. You get one hashtag sticker that’s visibly clickable, and you can add more hidden inside text, but Stories disappear after 24 hours so the discovery window is tiny. If you’re relying on Stories for reach, the size and format of the content matters more than the tag. Check what Instagram Story size gets the best results before you worry about which hashtag sticker to add, because a badly cropped Story will lose you viewers faster than a missing hashtag ever will.
Finding hashtags that fit your content, not just your hopes
Here’s the actual process I use with clients:
- Type your core topic into Instagram’s search bar and look at the follower count Instagram shows next to related tags. A tag with 40 million posts is too broad, your content vanishes into it within seconds. A tag with 2,000 to 80,000 posts is where a new or small post can realistically surface.
- Check what hashtags your three closest competitors are using consistently across their last ten posts, not just one lucky viral one.
- Search the tag yourself and scroll the Recent tab. If the posts there look nothing like yours, or are dominated by spam accounts, drop it.
- Rotate two or three sets rather than pasting the same thirty tags on every post. Instagram has said repeatedly that it does not shadowban accounts for reusing hashtags, that’s a myth that refuses to die, but varying your tags to match what’s in each post is simply more accurate.
A real example from my own feed
I posted a Reel in early 2025 about pricing your services with confidence, no hashtags at all, just the caption and a clear hook. It did 34,000 views. Three weeks later I posted something similar in format and quality, with five hashtags added (#smallbusinessowner, #pricingstrategy, #ukbusiness, #consultantlife, #businesstips), and it did 22,000 views. Same posting time, same day of the week, same hook style. The difference wasn’t the hashtags, it was almost certainly the topic and the watch time on the actual video content. I mention this because it’s easy to credit or blame hashtags for a result that had nothing to do with them. If your Reels are underperforming and you’re reaching for hashtags as the fix, check the basics first. If you’ve noticed your Reels lagging or stuttering when you post, that technical friction will cost you more viewers in the first ten seconds than any hashtag choice ever will.
The different types of hashtags worth knowing
Not all hashtags do the same job. It helps to think in categories:
- Descriptive tags that literally name what’s in the post, like #chocolatecake or #freelanceediting. These are the most useful for search.
- Community tags built by a niche group, like #smallbizsaturday or #womeninbusiness, that connect you to people already interested in your space.
- Branded tags unique to your business, like a hashtag you invent for your own audience to use when they tag you. These build a searchable archive of your community’s content over time.
- Location tags, useful if you serve a local area, since Instagram’s search does let people filter by place alongside hashtag.
- Trend tags, tied to a current moment or challenge. These move fast and die fast, so if you’re chasing them, timing matters more than the tag itself. The same logic applies to spotting a trending Instagram filter before everyone else does, being early is the only version of this that pays off.
Mistakes I see constantly with clients
The most common one is copying a hashtag set from a big influencer’s post and pasting it on a small account’s post, assuming the same tags will work the same way. They won’t. A tag that works for an account with 400,000 followers competes at a completely different level than the same tag on an account with 900 followers. Your post gets buried under theirs within minutes.
The second mistake is treating hashtags the same way across Reels and static posts. They don’t behave identically, because the discovery mechanics differ. If you want the full picture on this, it’s worth reading how Reels differ from regular posts before you build a hashtag habit that only suits one format.
The third mistake, and the most expensive one, is spending twenty minutes a day researching hashtags and zero minutes planning what you’re going to post. I’d rather a client spend that twenty minutes batching a week of content in a proper scheduler than fiddling with tags. If you haven’t got a system for that yet, look at a free Instagram post scheduler that fits your workflow and put your energy into consistency instead.
Does any of this make you money
Indirectly, yes, if it gets the right eyes on your account and those eyes convert to followers, leads, or sales. Directly, hashtags don’t pay you a penny, Instagram doesn’t reward hashtag use with cash, and if you’re trying to work out what the platform pays creators for reach and engagement, that’s a different mechanism entirely, covered in how much Instagram pays per engagement and what the money really looks like. Hashtags are a discovery tool, not a monetisation lever. Keep the two separate in your head and you’ll stop overvaluing them.
Related reading: best friend hashtags.
Related reading: instagram search hashtag and location.
Related reading: best friends hashtags.
If you want your own numbers, use the free hashtag set checker.
Frequently asked questions
Do hashtags still work on Instagram in 2026
Yes, but as a small discovery signal, not a reach multiplier. They help your post show up in hashtag search results and the Search tab, but Instagram’s own leadership has confirmed hashtags carry very little weight in the main feed and Reels ranking, so treat them as a filing tool rather than a growth hack.
How many hashtags should I use on an Instagram post
Between three and eight, chosen for accuracy over popularity. Instagram allows up to 30, but testing across dozens of accounts shows posts with a handful of precise, relevant hashtags perform on par with or better than posts crammed with dozens of broad, generic ones.
Does using the same hashtags every time get you shadowbanned
No, this is a myth Instagram has addressed directly. Reusing hashtags won’t get your account suppressed. The real issue with reusing the same set every time is accuracy, tags should match what’s in each specific post, not act as a permanent copy-paste block.
Should I put hashtags in the caption or the first comment
It makes no measurable difference to reach, Instagram reads both the same way for discovery purposes. Put them wherever looks tidier to a human reading your post, since real people deciding whether to follow you matter more than where the tag technically sits.
