Unsure how many hashtags to use? A good social media hashtag strategy is simple: use a few specific, relevant tags, follow each platform’s limit, and treat them as search labels rather than a reach hack.
This guide sits inside the wider topic of social media marketing and focuses on how hashtags help people find your posts.
| Item | Value |
|---|---|
| Instagram hashtag limit per post and Reels | 5 (as of December 2025) |
| X recommended hashtags per post | 2 |
| LinkedIn recommended hashtags per post | 3 (guide updated September 2024) |
| TikTok recommended hashtags | 3-5 (guide updated September 2024) |
| Facebook recommended hashtags | 1-2 (guide updated September 2024) |
| Clicks on X adverts without a hashtag or @mention | 23% more (as reported by Sendible) |
Figures come from the U.S. Chamber of Commerce guide and the Influencer Marketing Hub guide. Platform rules change often, so check the sources before you rely on these numbers.
Are hashtags still worth using?
The short answer in the U.S. Chamber of Commerce guide is yes, but their usefulness is limited. Hashtags once helped push posts to wider audiences, while platforms today may penalize excessive or irrelevant ones.
A useful way to think about them is as labels. Sked Social describes hashtags as labels that tell each platform’s algorithm and search what a post is about, so you should treat them as a categorization and search signal, not a reach hack.
That framing sets realistic expectations. MeetEdgar, quoted in the Chamber guide, says hashtags will not guarantee virality but still help with long-term discoverability and search placement.
How to choose hashtags that work
The Chamber guide recommends using hashtags like SEO keywords, with fewer and better tags rewarded over long lists. Look for tags that are:
- Industry-specific
- Relevant to your brand
- Searchable
- Niche to a community
It also helps to mix tag types. The Influencer Marketing Hub splits hashtags into these groups, and brands often combine several:
- Lifestyle-based, such as #fashion or #photography
- Event-based, such as #sale or #worldcup
- Brand-based, usually the company name
- Product-based, tied to a specific product
- Community-based, built to encourage fans and supporters
Keep the formatting clean. The same guide advises no spaces, because only the part before a space will count, and no punctuation other than the leading #. It also suggests short tags and consistent capitalization, since capitalizing each word helps readability.
Finally, do not rely on tags alone. Sked Social advises putting your main keywords in the caption first.
Hashtag limits by platform
Limits differ by network and shift over time. According to the U.S. Chamber of Commerce, Instagram limits hashtags per post and Reels to five as of December 2025, and X recommends two per post.
Older advice may be out of step. The Influencer Marketing Hub guide, last updated in September 2024, listed up to 30 allowed on Instagram, which predates that newer cap.
As a general rule, Sked Social suggests three to five specific tags on most platforms while following each platform’s own limit.
Platform notes: Instagram, X, Facebook and more
Per the Chamber guide, Instagram removed the “Follow Hashtags” feature in 2024, but its algorithm still uses hashtags for categorization, niche targeting and brand building. It distributes content across Explore, Reels, Search, Feed and Suggested Accounts based, in part, on the tags you use.
Because of that, pick tags that fit the audience you want on that platform. If you want growth beyond tags, the guide on how to grow instagram followers organically is a natural next step.
X
The Chamber guide notes that X’s owner has publicly discouraged hashtags, yet the platform’s official guidelines say relevant ones can support discoverability. It adds that X recommends two per post and penalizes posts that use more.
For paid posts, Sendible, cited in the same guide, reports that X adverts without a hashtag or @mention generate 23% more clicks. That advice applies when you are trying to drive traffic to your website.
Facebook and Threads
The Chamber guide says Facebook has never really rewarded hashtags, and experts see them working best with breaking news, current events or an event your business hosts. The same guide reports that Threads uses topics instead of hashtags for content distribution.
The Influencer Marketing Hub suggests 1-2 hashtags on Facebook, and too many can reduce engagement.
LinkedIn and TikTok
The Influencer Marketing Hub recommends 3 hashtags per LinkedIn post and 3-5 on TikTok for optimal visibility. Treat these as starting points and test them against your own results.
A simple routine to build and review your list
A repeatable routine beats guessing. Try this:
- Write your caption first and put the main keywords in it.
- Choose a few tags per post from different types, such as topic, community and brand.
- Stay inside the limit for that platform.
- Record the tags you used for each post.
- Review your most popular posts and look for tags that keep appearing.
The last step comes from the American Marketing Association, quoted in the Chamber guide: if specific hashtags consistently appear in your top-performing posts, include them in future content.
A periodic social media audit is a sensible moment to run that review across every account.
Frequently asked questions
Do hashtags still work?
Show answer
Yes, but with limits. The U.S. Chamber of Commerce guide says their usefulness is limited and platforms may penalize excessive or irrelevant tags.
How many hashtags should I use?
Show answer
Sked Social suggests three to five specific tags on most platforms, within each platform’s own limit. Instagram’s limit is five as of the Chamber’s December 2025 reporting.
Should I use hashtags on Facebook?
Show answer
They matter less there. The Chamber guide says Facebook has never really rewarded them, though they can help with breaking news or events you host.
Should I add hashtags to X adverts?
Show answer
If your aim is website traffic, probably not. Sendible, cited by the Chamber guide, reports that adverts without a hashtag or @mention generate 23% more clicks.
