LinkedIn hashtags work differently from Instagram or Twitter hashtags, and applying rules from those platforms usually backfires. On LinkedIn, hashtags are primarily a content routing tool rather than a discovery mechanism — they help the algorithm categorize your post and surface it to users who follow those topics. This guide covers exactly how to use them strategically.
How LinkedIn Hashtags Work
LinkedIn hashtags serve two primary functions: they help the algorithm categorize and route your content, and they make your post discoverable to users who follow those specific hashtags.
When a user follows a hashtag on LinkedIn, they occasionally see top posts using that hashtag in their feed — even from people they don't follow. This is one of the few ways to reach entirely new audiences organically on LinkedIn without paying for ads.
Unlike Instagram, where hashtag-browsing is a common discovery behavior, LinkedIn users rarely browse hashtag feeds. The primary value of LinkedIn hashtags is algorithmic routing, not user-initiated discovery. This means using niche, relevant hashtags matters more than using high-volume ones.
3–5
Optimal number of hashtags per LinkedIn post
1M+
Followers needed for a hashtag to have broad discovery value
Millions
LinkedIn users who follow topic hashtags and see posts in their feed
How Many Hashtags Should You Use?
The research on LinkedIn hashtag quantity consistently points to 3–5 as the optimal number. This is notably different from Instagram (where 15–20 hashtags was once standard) or Twitter (where 1–2 is optimal).
Using more than 5 hashtags on LinkedIn is associated with lower reach, likely because it signals promotional or spammy content to the algorithm. Using fewer than 3 means you're leaving discoverability potential on the table.
3–5
Optimal hashtag count per post
< 3
Below optimal — missing discovery opportunities
6–10
Associated with lower reach in most studies
10+
Treated as spammy — avoid
✓ Good: #LinkedInMarketing #B2BContent #ContentStrategy (3 targeted hashtags) ✗ Too few: Just #Marketing (vague, too broad, misses niche routing) ✗ Too many: 8+ hashtags crammed into a post (looks spammy, may suppress reach)
Three Types of Hashtags to Use
For each post, aim to use a combination of these three hashtag types. Together they create a balance between broad reach and niche relevance:
- Niche hashtags (1–2 per post): Specific to your industry, role, or topic. High relevance, lower follower counts (10K–500K), but more targeted audiences. Examples: #SaaSFounders, #HRTechnology, #B2BDemandGen. These drive the most relevant impressions.
- Broad topic hashtags (1–2 per post): Wider professional topics with large follower bases (500K–5M followers). Examples: #Leadership, #Marketing, #Entrepreneurship. These maximize your potential reach into broad topic feeds.
- Branded or community hashtags (0–1 per post): Hashtags tied to your personal brand, a series you run, or a community you're part of. Builds consistency and makes your content findable over time. Example: #YourNameInsights or a recurring series name.
Pro tip: For most posts, 2 niche + 2 broad hashtags is the sweet spot. The niche hashtags do the targeting work; the broad hashtags handle the reach potential.
Where to Place Hashtags in Your Post
LinkedIn allows hashtags anywhere in the post, but placement affects how your post reads and may affect engagement. Here are the main options:
- At the end of the post (most common): Keeps the post body clean and lets your content speak for itself. Recommended for most posts.
- Inline within the text: Works naturally if the hashtag is part of the sentence (e.g., 'Every #B2BMarketer should know this'). Can feel forced if overused.
- In the first comment: Completely removes hashtags from the post body. Some creators prefer this for aesthetic reasons. There is limited evidence that this reduces discoverability compared to in-post hashtags.
Post content ends here. . . . #LinkedInTips #ContentStrategy #PersonalBranding (Using line breaks before hashtags keeps the post visually clean and separates the content from the metadata.)
How to Research LinkedIn Hashtags
Choosing the right hashtags takes a few minutes of research the first time — then you can reuse a bank of 15–20 relevant hashtags across your posts.
- Search on LinkedIn: Type a hashtag into LinkedIn's search bar. The platform shows you how many followers that hashtag has. Use this to gauge audience size.
- Check the follower range: Aim for niche hashtags with 10K–500K followers (targeted audience) and broad hashtags with 500K–5M followers (reach potential). Hashtags with < 1K followers rarely appear in anyone's feed.
- Check what top creators in your space use: Look at 3–5 top performers in your niche. Note their recurring hashtags. These have been validated by success.
- Use LinkedIn's autocomplete: When typing a hashtag, LinkedIn suggests completions with follower counts. Use this to find the most-followed variation of a hashtag.
- Build a hashtag bank: Create a list of 15–20 validated hashtags across your content pillars. Rotate them across posts rather than using the same ones every time.
Hashtag Mistakes to Avoid
These are the most common hashtag errors that hurt LinkedIn reach:
- Using irrelevant hashtags for reach: #Motivation on a technical product management post doesn't reach your target audience — it just confuses the algorithm's routing.
- Using only generic hashtags: #Business, #Success, #Growth have millions of followers but generate mostly irrelevant impressions. Pair them with niche hashtags.
- Using banned or flagged hashtags: Some hashtags have been flagged by LinkedIn for misuse. Before using an obscure hashtag, search it to see if it has an active feed.
- Copying the same hashtags on every post: Vary your hashtag set based on each post's actual topic. Using identical hashtags on every post is a weak signal to the algorithm.
- Using hashtags in the headline/hook: The first line of your post is precious real estate for your hook — don't waste it on hashtags.