TikTok’s algorithm behaves differently than other platforms when it comes to hashtags. In TikTok ads specifically, hashtags are not the primary driver of reach or targeting-that role belongs to the platform’s powerful recommendation engine, which prioritizes user behavior, video completion rates, and engagement signals. That said, hashtags still play a meaningful supporting role when used strategically. Here’s how to wield them effectively in your TikTok ad campaigns.
Understand the Hierarchy of TikTok Hashtags
Not all hashtags are created equal. For TikTok ads, you want to balance three types:
- Broad or “Category” Hashtags – These are high-volume tags like #fashion, #fyp, or #cooking. They help the algorithm understand the general topic of your ad. Use 1 or 2, but don’t over-rely on them-they are too competitive for organic discovery and won’t directly boost your paid performance.
- Niche or “Community” Hashtags – These are more specific, like #sustainablefashion or #ketorecipes. They signal stronger intent and help your ad appear in searches for those topics. Include 2 to 3 niche tags that align with your product or audience.
- Branded or Campaign Hashtags – Unique to your business, like #SagumGrowth or #YourBrandChallenge. These are essential for tracking user-generated content, building a community, and encouraging engagement beyond the ad. Always include 1 branded hashtag.
Limit Your Hashtag Count and Prioritize Relevance
Unlike Instagram, where 30 hashtags are still common, TikTok ads perform best with a concise set of 3 to 5 hashtags total. Overloading your caption with hashtags can dilute your message and appear spammy, which hurts click-through rates and ad relevance scores. Instead, focus on quality over quantity:
- Choose hashtags that directly reflect the core theme of your ad creative.
- Research trending hashtags within your niche using TikTok’s search bar or tools like TrendTok-but only use them if they are genuinely relevant.
- Avoid generic, overused tags like #viral or #trending. They add no value and can signal low-quality content to the algorithm.
Place Hashtags in the Caption, Not the Video Overlay
In TikTok ads, the caption is the proper place for hashtags. Overlaying hashtags directly on the video can clutter the creative and distract viewers from your core message. Keep your caption clean-write a compelling hook, then include your hashtags on a separate line at the end. This ensures the algorithm reads them without hurting user experience.
Leverage Hashtag Challenges Strategically (But Only If Relevant)
TikTok’s branded hashtag challenges can be powerful for driving engagement, but they work best when your ad is part of a larger organic or paid campaign. If a trending hashtag challenge aligns with your brand voice, you can reference it in your ad’s caption or creative to ride the wave. However, forcing a challenge into your ad when it doesn’t fit will feel inauthentic and hurt performance. Our approach at Sagum is to test these only when the challenge’s theme maps naturally to your product or service.
Monitor Performance and Iterate
Hashtag effectiveness can shift weekly on TikTok. After launching your ad campaign:
- Compare engagement rates across different hashtag sets using your analytics dashboard.
- Drop underperforming tags and test 1-2 new ones per ad set.
- Watch for hashtags that generate higher comment rates or saves-these signal deeper relevance.
At Sagum, we treat hashtags like any other ad variable: we test, measure, and refine. Because we’ve spent over $2 million on TikTok ads, we’ve learned that the biggest wins come from pairing tight hashtag strategies with strong creative and precise targeting. Hashtags alone won’t make your ad succeed, but used correctly, they help the algorithm place your content in front of the right eyes faster.
