Instagram hashtags: how to choose them for a post

An Instagram hashtag is a label that starts with # and groups posts around a topic. Choose one by looking at what someone can see or learn in your post, rather than copying a list that could fit any account.

Instagram lets you put hashtags in a caption or comments. Its official hashtag help page says a post from a public account with hashtags may appear in the corresponding search results. That describes one possible discovery route.

Choose tags that describe this post

Before writing, finish this sentence: “This post shows ___.” Then check whether each proposed tag names something that really appears, is explained or is demonstrated. A broad tag is not automatically useful. If it does not help someone understand the subject, leave it out.

Imagine a fictional sewing workshop in Valdivia. It posts a video showing a fabric bag made from offcuts left in the workshop. The copy reads:

We made this bag from fabric offcuts left in the workshop. The video shows the pieces before sewing and the finished bag.

#FabricBags · #Sewing · #MadeInValdivia

Each tag adds a detail the post supports: the object, the process or the workshop’s actual location. #Travel would be broad and would not describe the video.

Use the same check for each post. A tag that fits a product video may not fit a service answer, event or team introduction. If a post touches several subjects, choose the one it explains most clearly instead of trying to cover them all.

How many hashtags can you add, and where?

Instagram’s Help Center page, checked on October 15, 2026, says you can use up to five tags on a post and notes that if you include more than five on a single photo or video, your comment will not post. It also allows them in the caption or a comment. The maximum is a documented limit, not a target. Use only tags that add context to the post.

The same page says numbers are allowed, but spaces and special characters such as $ or % do not work in a hashtag. It also says you can tag your own posts, and posts from private profiles will not appear in public search results. The page checked is the iPhone-app help view and describes photo or video posts; do not assume these exact steps or limits apply to other formats without checking their documentation.

Check each tag before you publish

Run through these questions:

1. Does the post support the tag? If someone taps it expecting that subject, will the post meet the expectation?
2. Can the caption still be read naturally? A string of mixed topics is usually harder to understand than a few precise tags.
3. Does it still describe this post? Check campaign names, event details and location before reusing an old tag.
4. Would you include it without a promise of reach? If it only sounds attractive because it is called “viral,” find a more accurate description.

Hashtags and search phrases do different jobs

A hashtag names or groups a topic. Text in the video, image and caption can explain the full question someone wants answered. Do not turn a caption into a list of variations on the same word or expect a hashtag to replace the explanation.

If you are preparing a post to answer a search, the Instagram and TikTok SEO guide explains how to connect the question, text and caption. For this post, check separately that its hashtags describe what you actually published.