Every year someone writes an article claiming hashtags are dead. Every year they're wrong. Hashtags still work — they just don't work the way Instagram users think. The "use 30 popular tags" advice is actively harmful in 2025.
Here's what's actually changed: Instagram's algorithm now uses hashtags as a topic signal, not a distribution channel. Meaning: the tags tell the algorithm what your post is about. They no longer push your post onto the hashtag's feed in front of millions.
Do Hashtags Even Matter in 2025?
Yes, but less than they used to, and in a different way. Adam Mosseri (head of Instagram) confirmed publicly in 2023: hashtags mainly help Instagram categorize your content. They're a relevance signal, not a reach multiplier.
What that means for you: tagging a cooking post #cooking #recipes #food helps the algorithm show it to people who engage with cooking content. Tagging it #love #instagood #photooftheday helps nothing.
How Many Hashtags Should You Use?
Instagram allows up to 30 hashtags. Across millions of posts, the sweet spot is 3 to 10. More than 10, and you dilute the topic signal. Less than 3, and you're leaving relevance signal on the table.
🎯 The Ideal Count
Use 5–7 highly relevant hashtags. Five beats thirty almost every time. Your post will reach the right people, not more people.
The 5-3-2 Mix Rule
If you're using 10 hashtags, distribute them like this:
- 5 niche tags (1K–50K posts): Small, specific tags where your post can rank in Top Posts. This is where actual discovery happens.
- 3 medium tags (50K–500K posts): Moderate competition. You might rank briefly in Top Posts on a good day.
- 2 large tags (500K+ posts): For topic signal only. You won't rank here, but they tell the algorithm the broad category.
Skip mega tags like #love (2B+ posts). Zero chance of discovery, and they attract bots that hurt your engagement rate.
Example for a home-workout post:
Niche: #smallspaceworkouts #homeworkoutbeginner #apartmentfitness #bodyweightchallenge #nogymfitness
Medium: #hiitworkout #fitnessmotivation2025 #workoutathome
Large: #fitness #workout
How to Find Hashtags That Work
1. Use Instagram's search
Search a broad term. Click the Tags tab. Instagram will show post counts for each — that's how you judge size. Look at which tags related creators in your niche actually use.
2. Reverse-engineer competitors
Find 5 creators in your niche with 5K–50K followers. Look at their best-performing recent posts. What hashtags do they reuse? Those are battle-tested for your audience.
3. Watch suggested tags
When you type a hashtag in the Instagram composer, it auto-suggests related tags with post counts. Use those suggestions — they're algorithmically relevant to what you're writing.
4. Create a branded tag
If you grow past 10K followers, create one branded tag (#YourBrandName). Put it in every post. It helps track UGC and gives fans a way to connect.
🚀 Hashtags Won't Save a Post With No Momentum
Even perfect hashtags don't compensate for zero early engagement. If you want the algorithm to take your post seriously, it needs that initial push.
Give Your Posts a Boost →Where to Put Hashtags
The caption vs. first-comment debate is settled. Instagram has confirmed multiple times: no ranking difference. Use whichever looks cleaner to you.
Most creators put hashtags at the end of the caption, separated by line breaks or dots, to keep them visually out of the way. Works fine. Putting them in the first comment works fine too.
Hashtags to Avoid
- Banned or restricted tags: Instagram silently limits distribution on certain hashtags (often health/body-related). Search the tag — if it says "Recent posts are hidden," avoid it.
- Generic engagement-bait tags: #likeforlike, #follow4follow, #l4l. These tank your engagement rate because they attract bots, not your audience.
- Completely unrelated tags: Tagging a car post with #foodie because foodie has high volume. The algorithm sees the mismatch and reduces distribution.
- Over-specific tags with under 500 posts: No one is browsing them. Use them only as branded/campaign tags.
The One-Line Takeaway
Use 5–7 hashtags. Make them small, specific, and actually about your post. Skip the volume game. Instagram's algorithm will reward relevance every single time.