Hashtags have been a source of genuine confusion for small business owners since they first became a thing on Twitter back in 2007. Over the years, the advice has shifted dramatically: use as many as possible, use no more than five, use thirty on Instagram, never use any on LinkedIn. The rules seem to change constantly, and different platforms behave very differently.
Here is a straightforward guide to where hashtag strategy actually stands in 2026, platform by platform.
Instagram has gone back and forth on hashtag guidance over the years, but the current consensus among social media practitioners is that between three and ten relevant hashtags per post is the sweet spot. Instagram itself has suggested that a smaller number of highly relevant hashtags outperforms a wall of thirty loosely related ones.
The key word is relevant. Hashtags that accurately describe your content and your audience are worth using. Broad, high-volume hashtags like #love or #instagood are so competitive that your post will disappear almost immediately. A mix of niche-specific tags with moderate search volumes tends to perform better for small businesses than chasing the biggest hashtags.
There is no longer a significant benefit to hiding hashtags in comments or adding them after posting. Placing them at the end of your caption or in the first comment makes no meaningful difference to performance.
TikTok
On TikTok, hashtags play a different role. They help the algorithm understand what your content is about and who to show it to, but they work best when they are specific and relevant. Three to five hashtags per video is generally sufficient. Including one or two trending hashtags, where they genuinely relate to your content, can boost reach, but do not force a trending tag onto content where it makes no sense.
TikTok’s algorithm is sophisticated enough to understand content without relying heavily on hashtags, so worrying excessively about hashtag strategy here is less important than simply making good content.
LinkedIn recommends using between three and five hashtags per post. More than that can make a post look spammy, and LinkedIn’s algorithm does not reward volume in the way that older Instagram advice used to suggest. Focus on hashtags that are genuinely relevant to your industry, your topic, and the audience you want to reach.
Niche professional hashtags on LinkedIn, such as those specific to your sector or specialism, can expose your content to communities of people actively following that topic. These tend to perform better than very broad hashtags.
Hashtags on Facebook have never really caught on in the way they have on other platforms, and the engagement benefit is minimal. Most practitioners recommend using one or two at most, or none at all. Facebook’s algorithm does not appear to weight hashtags significantly, and posts without them perform just as well as those with them.
X (formerly Twitter)
On X, one or two hashtags per post is the widely accepted best practice. Research has consistently shown that posts with more than two hashtags see lower engagement on X than those with one or none. Use them where they genuinely add context or connect your post to a relevant ongoing conversation, not as a way to game visibility.
The universal rules
Regardless of platform, a few principles apply consistently:
- Relevance always beats volume. A hashtag that accurately describes your content is worth ten irrelevant ones.
- Research before you post. Check that a hashtag is active and that the content in it is the kind of company you want to be in.
- Avoid banned or flagged hashtags. Some hashtags have been shadowbanned on certain platforms, and using them can suppress your content’s reach.
- Do not use the same set of hashtags on every post. Varying them keeps your content from being flagged as repetitive by the algorithm.
Hashtags are a tool, not a strategy. Good content will always outperform poor content with perfect hashtags. But used correctly, they can give your posts a meaningful boost in visibility with the right audience.
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Once you’ve mastered hashtag strategy, the next question is how often should you post on social media for optimal results. If you’re following these hashtag guidelines but still not seeing results, check out our guide on signs your small business social media isn't working.
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