If you’re still pasting 30 hashtags into every caption and hoping for the best, the algorithm has already moved on. What worked in 2019—stuffing your posts with popular tags like #love and #instagood—now reads as background noise to Instagram’s ranking system. The platform has gotten dramatically smarter about weighing hashtag performance, and the creators who see real traction have adjusted accordingly. This isn’t about using more hashtags. It’s about using the right ones, in the right places, for the right reasons.
Here are eight strategies that actually move the needle in 2025.
Use fewer hashtags—but make them count
The 30-hashtag ceiling Instagram technically allows doesn’t mean you should hit it. Most high-performing accounts in competitive niches use somewhere between 3 and 8 hashtags per post, with the sweet spot landing around 5. The old advice to “use all 30” came from a time when the algorithm weighted hashtag quantity more heavily. It doesn’t anymore.
What matters now is relevance. Instagram’s system can parse the semantic relationship between your content and your hashtags. A post about sourdough bread tagged with #bakinglife will perform worse than the same post tagged with #sourdoughstarter, even though the first tag has millions more posts. The algorithm prioritizes content-to-hashtag alignment over raw volume.
Try this: limit yourself to 5 hashtags per post. Choose ones that a person actually searching for your content would type into the search bar. If you sell handmade candles, #handmadecandles beats #love by a mile—even though the latter has 2 billion posts.
Put your hashtags in the first comment, not the caption
This is where most guides get it wrong. Placing hashtags directly in your caption actually hurts you in two ways: it looks spammy to human readers, and it can suppress your reach because Instagram’s systems deprioritize content that appears to be keyword-stuffing.
The better approach is the first comment. After you publish your caption—clean, engaging, human—drop your hashtags as the first comment on your own post. This keeps your caption readable while still signaling to the algorithm what your content is about.
Some creators go a step further and hide hashtags using line breaks in the caption itself (five dots on their own line, then the hashtags below). The first comment method is cleaner and achieves the same result. Either works. The direct caption approach mostly just annoys your audience.
Mix your hashtag sizes strategically
Not all hashtags are created equal, and mixing the wrong sizes together is like trying to fish with a net that has holes of every size—you catch everything and nothing at the same time.
Here’s the framework that actually works: use one or two high-volume hashtags (500K+ posts), two or three medium-volume hashtags (50K-500K posts), and one or two niche hashtags (under 50K posts). The high-volume tags give you exposure to massive audiences, but your content gets buried almost instantly. The niche tags won’t drive huge volume, but the engagement rate on those posts tends to be higher because you’re reaching people who are genuinely interested in that specific topic.
The problem most creators have is using all high-volume hashtags. Yes, #photography has 900 million posts. Your photo will be on the explore page for eleven seconds. Nobody searching that tag will ever scroll far enough to find your content. The medium and niche tags are where your actual community lives.
Research hashtags before you need them
The worst time to find hashtags is when you’re already drafting a post. That’s when you default to the same five tags you’ve always used, which defeats the entire purpose of hashtag strategy.
Build a swipe file. Every time you see a relevant hashtag in your feed—one that’s producing content similar to yours, with engagement that looks real—save it. There are tools for this: Display Purposes, Hashtagify, and RiteTag all offer keyword-based research with volume data. But the best source is simply paying attention to what creators in your space are using successfully.
As a practical habit, set a calendar reminder for once a week to spend fifteen minutes researching hashtags for your top five content themes. By the time you sit down to create a post, you should have a curated list ready to go—not a blank search bar.
Place hashtags in your Instagram bio
This is one of the most underutilized features on the entire platform. Your bio supports up to three clickable links, and those links can absolutely include hashtags. This matters because when someone searches for a hashtag within Instagram and your account appears in the results (because you’ve used that tag in your bio), you get exposure from people actively looking for content in your niche.
Update your bio hashtags quarterly based on what you’re posting most. If your content calendar leans heavily into meal prep in January, swap your bio hashtags to reflect that. This isn’t about keyword stuffing—it’s about meeting your audience where they’re already searching.
Avoid banned and flagged hashtags
Instagram maintains an internal list of hashtags that are either banned (usually because they’ve been co-opted for spam, bot activity, or prohibited content) or flagged (under review and potentially risky to use). Using these hashtags won’t get your account banned outright, but it will suppress your reach. The algorithm associates your content with problematic tags and deprioritizes it.
The tricky part is that the banned list isn’t public and it changes constantly. Some obviously offensive tags are banned. But so are innocent-seeming ones that have been spammed into oblivion—#beautyblogger, #hardworkpaysoff, and #pushups have all been flagged at various points in recent years.
The workaround is simple: before using any hashtag you’re not certain about, search for it on Instagram. If the search results show zero posts, or if the top results are all from accounts with suspiciously generic names and no engagement, don’t use it. Your content deserves better than to get caught in a spam filter.
Leverage hashtags for Reels specifically
Reels have their own discovery engine, and hashtags function differently there than in static posts. The Reels tab has a separate hashtag search, and the algorithm appears to weight hashtag relevance more heavily for video content—possibly because video is harder for the system to parse semantically, so it relies more on explicit signals.
When posting a Reel, include 3-5 hashtags in the caption or first comment, but make them specifically video-oriented. A Reel about running shoes should use #runningreels or #runnersofinstagram rather than just the static-image versions of those tags. This helps the Reels algorithm categorize your content correctly for its own discovery surfaces.
Also worth noting: the explore page for Reels and for static posts are separate. A hashtag that works beautifully for your photo content might do nothing for your video content. Test independently and track which hashtags drive reach on each format.
Track what actually works for your specific account
Every piece of advice in this article—mine included—should be tested against your own data. Instagram provides hashtag performance data in your post insights, but only for business and creator accounts. If you’re still on a personal account, switch. The insights are essential.
When you review post insights, look specifically at “Impressions from Hashtags” and compare which tags drove the most reach relative to their size. A niche hashtag with 2,000 posts that sends you 50 impressions is outperforming a popular tag with 2 million posts that sent you 5. That’s the data point that matters: impressions per available post, not raw volume.
Build your own performance baseline. Run experiments—post the same content with different hashtag sets, track the results, and adjust. What works for a travel photographer in Barcelona might not work for a product-based account in Ohio. The algorithm is account-specific. Trust your data more than any guide, including this one.
Where this leaves you
The honest truth about Instagram hashtags is that they’re not a magic switch. They won’t salvage content that isn’t worth watching in the first place. But when your content is good and your hashtags are strategic, they do meaningfully expand your reach to people who are actively looking for what you create.
The creators who win on Instagram in 2025 aren’t the ones using the most hashtags. They’re the ones treating hashtags like a search engine within the platform—thinking like their audience, researching deliberately, and iterating based on what the data actually shows. That process takes fifteen minutes a week and it works.
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