For years the rule was simple: pile on as many hashtags as possible to gain reach. In 2026, it no longer works that way. Algorithms have evolved, and stuffing your posts with #thirty #generic #hashtags can even work against you.
Should you drop them altogether? No. Used well, hashtags are still a useful discovery tool - as long as you understand what they actually do today.
What hashtags really do today
A hashtag is first and foremost a categorisation tool: it helps the platform understand what your content is about and surface it to the right people. It's no longer a magic reach lever - just a context signal. Content quality comes first; hashtags only fine-tune distribution.
Platform by platform
3 to 5 targeted hashtags beat 30 generic ones. Favour niche hashtags (#growthmarketingbelgium) over saturated giants (#marketing). In the caption or the first comment, it doesn't matter - the effect is the same.
Three hashtags maximum, professional and precise. LinkedIn mainly uses them to classify the topic of your post. Beyond that, the effect drops off and it clutters the post.
TikTok
Mix 1 to 2 broad hashtags with a few niche ones tied to your topic. TikTok increasingly works like a search engine: think of the words your audience would type to find you.
X (Twitter) & Facebook
On X, 1 to 2 hashtags are enough. On Facebook, their impact is low - don't make them a priority.
How to choose your hashtags
- Specific > generic: a niche hashtag reaches a smaller but far more relevant audience.
- Mix the volumes: a few mid-sized hashtags (easier to rank in) plus one or two broader ones.
- Create your own brand hashtag: short, memorable, to group your content and your community's.
Mistakes to avoid
- Piling on 20–30 hashtags "just in case": it dilutes the signal and looks like spam.
- Using off-topic hashtags because they're popular: the platform notices.
- Copy-pasting the same list on every post: vary them with the content.
Social media is just one lever among many. For an acquisition strategy that holds up over time, let's talk.