Straight answer: the best YouTube hashtags are the ones that match what people are already typing into the search bar, not the ones with the biggest view counts on other people’s videos. Use three, put them where YouTube can read them, and stop treating hashtags as a magic switch that fixes a video nobody wants to watch. Hashtags nudge the algorithm’s understanding of your video, they don’t do the heavy lifting for you.
What hashtags really do on YouTube (and what they don’t)
Hashtags on YouTube are a categorisation signal, not a discovery engine. YouTube reads the first three hashtags in your description and shows them above your video title as clickable tags. Click one, and you land on a search results page filtered to videos using that same hashtag. That’s the whole mechanic. It’s a filing system, not a spotlight.
I’ve had clients come to me convinced that stacking twenty trending hashtags onto a video about kitchen appliances would somehow put them next to MrBeast. It doesn’t work like that. YouTube’s own help documentation is blunt about it: if you use more than 15 hashtags in a video’s description, YouTube ignores all of them. Not most. All. So the person who piled on 30 hashtags “just in case” gets zero benefit from any of them, while the video that used three relevant ones gets full credit for those three.
Hashtags help YouTube understand context faster and they help viewers who are actively browsing by topic. They don’t compensate for a bad thumbnail, a weak title, or a video that doesn’t answer the question someone searched for.
The three categories of hashtags worth your time
Every hashtag you could use for a YouTube video falls into one of three buckets. Good hashtag strategy is picking one or two from the first bucket and one from the second, not raiding all three at once.
- Exact-match search hashtags, these mirror the query someone would type. If your video is “How to Batch Cook for a Week in 90 Minutes,” a hashtag like #mealprep does real work because it matches how people search.
- Niche/community hashtags, narrower tags used by a specific audience, like #cricutcrafts or #b2bmarketing. Smaller volume, but the people who click through are already warm.
- Broad topical hashtags, huge, generic tags like #business or #food. Millions of videos use these. Your one hashtag is a drop in an ocean and it will do almost nothing for you, even though it feels like it should.
The mistake I see most often is people leading with the broad bucket because the tag “looks bigger.” Bigger isn’t better here. A hashtag with 40,000 videos attached to it and a very specific audience will outperform one with 40 million videos attached to it and no audience filter at all.
The step-by-step method I use with clients
Here’s the process I walk through with every client channel before we publish, whether it’s a 90-second Short or a 20-minute long-form video.
- Start with the title, not the hashtags. Write your title as if it were a Google search query. If the title already contains the exact phrase people search, half your hashtag work is done.
- Type your topic into the YouTube search bar and watch the autocomplete. Whatever YouTube suggests as you type is what real people are searching. If you type “email marketing for” and it autocompletes to “small business,” that phrase becomes a strong hashtag candidate.
- Open three top-ranking videos in your niche and check their hashtags. Click “show more” under the description. You’ll see the full hashtag list, not just the three pinned above the title. This is where a lot of hashtag research falls down, people only look at the visible three and miss the rest sitting in the description.
- Pick one exact-match hashtag, one niche hashtag, and skip the broad one unless it’s your only option. Two to four total, no more.
- Place your top three in the description, first line, before anything else. Those are the ones YouTube pulls above your title. Everything after hashtag three still gets read for categorisation but doesn’t get displayed the same way.
That’s the whole method. It takes about four minutes per video once you’ve done it a handful of times.
A real example: the client whose views tripled from a title and tag fix
A client of mine runs a small accountancy practice channel aimed at freelancers. She’d been publishing videos with titles like “Tax Update March” and tagging them with #accounting #finance #tax, three broad hashtags with millions of competing videos each. Views were sitting around 80 to 150 per video, mostly from subscribers, almost nothing from search.
We rewrote one video’s title to “Self-Assessment Deadline 2026: What Freelancers Owe” and swapped the hashtags to #selfassessment, #freelancetax, and #uktax, all pulled straight from what showed up in YouTube’s autocomplete when we typed her topic in. Same video content, same thumbnail style, same channel. That single video hit 1,900 views in six weeks, and the traffic source report showed the jump came almost entirely from YouTube search, not suggested videos or subscribers. The hashtags didn’t cause that on their own, the retitled video matching a real search query did the heavy lifting, but the hashtags reinforced the exact same signal to YouTube instead of confusing it with generic tags that had nothing to do with what people were searching.
The part nobody wants to say out loud
Here’s the uncomfortable bit. If your video is average, no hashtag combination will save it. I’ve watched channel owners spend three hours researching the “perfect” hashtag set for a video that had a blurry thumbnail, a title that told viewers nothing, and content that rambled for the first ninety seconds before getting to the point. The hashtags were flawless. The video still flopped, because YouTube’s real ranking signals are watch time, click-through rate, and whether people stick around, and hashtags influence none of those directly.
Treat hashtags as the last five percent of your optimisation, not the first fifty. Fix the title, fix the thumbnail, fix the first fifteen seconds of the video where most viewers decide to leave, and only then spend your four minutes on hashtags. Doing hashtag research on a weak video is like ironing a shirt you’re about to spill coffee on.
Where to find hashtag ideas beyond guessing
Autocomplete is free and it’s the single best starting point, but there are other places worth checking:
- YouTube’s own search results page. Search your topic, scroll past the ads, and look at the “People also search for” suggestions that sometimes appear midway down the page.
- Competitor descriptions. If a channel near your size is consistently outranking you on similar topics, their hashtag choices are a free research shortcut. Some of the free tools that track competitor traffic and content can also show you which videos are pulling the most views, which tells you which hashtags are worth copying.
- Your own YouTube Analytics. Under Reach, check “How viewers find your video.” If a search term is already driving traffic without a matching hashtag, add one for that term immediately, you’re leaving an easy win on the table.
None of this needs paid software. It needs about ten minutes of looking at data you already have access to.
Shorts need a different approach than long-form
Everything above applies to standard long-form videos. Shorts behave differently because they’re competing in a separate feed with its own ranking logic, closer to TikTok than to traditional YouTube search. Hashtags like #shorts still matter there because they help YouTube route the video into the right feed, and the exact-match versus broad rule flips slightly since Shorts get more benefit from trend-adjacent tags. I’ve written a full breakdown of the best hashtags to use for YouTube Shorts if that’s the format you’re focused on, it’s worth treating as a separate strategy rather than copying your long-form tags straight across.
How many hashtags, and exactly where to put them
Stick to this structure and you won’t run into YouTube’s spam filter or waste effort on tags that get ignored:
- Use 2 to 4 hashtags total. Not 15, not “as many as fit.”
- Put your three most important ones as the very first line of the description, each on its own or separated by a space, no punctuation between them.
- Never exceed 15 hashtags across the whole description including tags mentioned in the video itself if you’re pulling them in via auto-captions or pinned comments. YouTube’s stated rule wipes out all hashtag benefit past that number.
- Don’t repeat the same hashtag across every single upload for months. YouTube has flagged accounts for hashtag spam when the same tags appear identically on every video with no variation, and it can suppress reach as a result.
Common mistakes that quietly cap your views
A few patterns I see over and over on client channels and in audits:
- Using hashtags in a language your audience doesn’t search in. If your viewers search in English, a Spanish trending hashtag does nothing for your reach even if it’s popular.
- Copying hashtags from a viral video in a completely different niche. A cooking channel copying hashtags from a viral gaming video gets categorised alongside gaming content and shown to the wrong audience, which then hurts your click-through rate and, by extension, your ranking.
- Treating hashtags as a substitute for proper on-page description work. A well-written description with your target phrase used naturally two or three times still does more for search visibility than any hashtag. This overlaps with basic SEO techniques that apply well beyond just YouTube, keyword placement and search intent matter on every platform, not just Google.
- Not checking analytics after a few weeks. If a hashtag isn’t showing up as a traffic source or search term after 20 to 30 uploads, drop it and test another.
Hashtags are one piece, not the whole system
If growing views is the actual goal, hashtags sit inside a much bigger system that includes consistency, title and thumbnail testing, and getting your existing subscribers to watch to completion before you worry about attracting strangers. My longer guide to growing YouTube views and gaining a subscriber a day covers the full sequence, hashtags are step six or seven in that process, not step one. The same logic about matching real search intent instead of chasing broad popularity carries over if you’re also trying to build influence on Instagram, the platforms differ but the principle of specific-beats-broad holds everywhere.
Frequently asked questions
How many hashtags should I use on a YouTube video?
Use two to four hashtags per video. YouTube ignores every hashtag on a video if you go past 15 in the description, so more is never better, it’s actively worse once you cross that line.
Do YouTube hashtags help videos rank higher?
They help YouTube categorise your video correctly and can put you in front of people browsing a specific topic, but they don’t outweigh watch time, click-through rate, or audience retention, which are the real ranking signals. Weak hashtags on a strong video barely matter. Perfect hashtags on a weak video won’t save it.
Where should I put my hashtags in a YouTube description?
Put your top three hashtags on the very first line of the description. YouTube pulls those three and displays them above your video title, so they carry more weight than any hashtags placed lower down.
Should I use the same hashtags on every video?
No. Reusing identical hashtags on every single upload for months can look like spam to YouTube’s systems and has been linked to reduced reach for some creators. Vary them based on each video’s specific topic instead.
