How to Vet an Influencer Before You Pay Them Anything
Buying followers costs almost nothing, buying comments costs slightly more, and both are common enough that follower count tells you very little. The checks that matter take about twenty minutes per creator and eliminate most of the risk.
Engagement rate, and why the raw number misleads
Engagement rate, meaning interactions divided by followers, is the first useful filter, but it has to be read against account size. Very large accounts naturally show lower rates than small ones, so a figure that looks weak on a million-follower account can be perfectly healthy while the same figure on a ten-thousand-follower account is a warning.
Compare within a size band and within a category rather than against a universal benchmark. What matters more than the number is its consistency: genuine accounts vary post to post, while accounts with purchased engagement often show suspiciously flat results because the same quantity was bought each time.
Look for the opposite pattern too. One post with wildly higher engagement than everything around it is usually either a viral outlier or a promoted post, and neither predicts what your campaign will get.
Read the comments, not the count
This is the single most revealing check and it takes five minutes. Open recent posts and read the comments properly. Generic praise, single emoji, and strings of unrelated compliments are the signature of engagement pods and comment services.
Real audiences ask questions, disagree, tag friends for specific reasons, and reference things the creator said previously. If a post about a product has no comments asking about price, sizing, availability or experience, the audience is not paying attention in the way you need them to.
Also check whether the creator replies. An account that answers questions has a relationship with its audience, which is the entire reason to work with a creator rather than buy ads.
Audience quality and past partnerships
Ask for audience demographics from the creator platform analytics rather than accepting a verbal summary. Location is the check that saves the most money: an audience concentrated in countries you do not serve is worthless regardless of size, and it is one of the clearest signs of purchased followers, which tend to cluster in a handful of places.
Look at follower growth over time. Steady growth is normal, occasional spikes from a viral post are normal, and vertical jumps of tens of thousands overnight with no corresponding post are not.
Then review their commercial history. How many sponsored posts have they done recently, and for whom? A feed that is mostly paid content has an audience trained to scroll past it. Direct competitors in the last few months are a genuine problem. And if a previous partner ran multiple campaigns with them, that repeat business is a stronger signal than any metric.
Ask for screenshots of results from a past campaign. Reach, saves, link clicks. A professional creator has these ready; reluctance to share them is informative in itself.
Structure the deal so you can measure it
Agree what you are buying in writing: how many posts and stories, on which platforms, whether you may reuse the content in paid advertising and for how long, what the exclusivity terms are, and what the approval process is. Content usage rights are the most commonly forgotten clause and the most expensive to add afterwards.
Build measurement in from the start. Unique discount codes and tagged links per creator are the minimum, since without them you are guessing. Ask for access to the post insights rather than accepting a screenshot. Our UTM builder generates consistent tagged links per creator.
Finally, disclosure is not optional. Paid partnerships must be clearly labelled, and the obligation sits with both the creator and the brand. Undisclosed advertising is a legal and reputational risk that no campaign result justifies. Our influencer marketing service handles vetting, contracts and measurement together.
Key takeaways
- Read engagement rate against account size and category, and check whether it is consistent post to post. Suspiciously flat engagement suggests it was bought.
- Reading the actual comments is the fastest fraud check. Generic praise and lone emoji indicate pods or comment services.
- Ask for platform analytics on audience location. An audience outside your market is worthless whatever its size.
- Vertical follower spikes with no matching post are purchased growth.
- Agree content usage rights, exclusivity and disclosure in writing, and measure with unique codes and tagged links.
Frequently asked questions
What is a good engagement rate for an influencer?
It depends heavily on audience size and platform, so a universal number is misleading. Smaller accounts consistently show higher rates than large ones, meaning a figure that looks strong on a large account would be a concern on a small one. Compare candidates against others of similar size in the same category rather than against a published benchmark, and pay more attention to consistency than to the headline figure. Genuine engagement varies naturally between posts; purchased engagement is often unnaturally uniform.
How can I tell if an influencer has fake followers?
Check four things. Read the comments on recent posts, since generic praise and single emoji indicate pods or purchased comments. Look at the follower growth chart for vertical jumps that do not correspond to any post. Request audience location data from platform analytics and see whether it matches the creator stated market. Finally, compare engagement to account size; a large following with very few genuine interactions is the clearest signal of all.
Are micro influencers better than large ones?
For most businesses, yes, and for reasons beyond price. Smaller creators typically have higher engagement, a more specific audience and an actual relationship with their followers, which is what makes a recommendation carry weight. Large accounts deliver reach, which is useful for awareness but behaves more like advertising. Several well-chosen small creators usually outperform one large one on the same budget, and the risk is spread across several partnerships instead of concentrated in one.
How should I pay influencers, flat fee or commission?
Established creators generally expect a flat fee, because they are giving up a post slot regardless of how it performs and cannot control your conversion rate. Pure commission arrangements attract less experienced creators and often produce low-effort content. A common compromise is a modest base fee plus a performance bonus tied to a unique discount code, which shares the risk while still compensating the creator for the work. Whichever structure you choose, agree it in writing before anything is produced.
Do influencers have to disclose paid partnerships?
Yes. Advertising rules in most markets require paid promotion to be clearly and prominently disclosed, and the obligation falls on the brand as well as the creator. Disclosure must be genuinely visible rather than buried at the end of a caption or hidden among hashtags, and it applies to gifted products and affiliate arrangements, not just cash payments. Include the requirement explicitly in your agreement and check that it was followed after the post goes live.
How do I measure influencer campaign results?
Give every creator a unique discount code and a uniquely tagged link, so sales and traffic can be attributed individually. Ask for access to the post insights rather than a screenshot, so you can see reach, saves and shares rather than only likes. Then judge results against what the campaign was for: an awareness campaign should be measured on reach and branded search volume, while a direct response campaign should be measured on the code and the tagged link. Mixing those objectives is how campaigns end up looking like failures when they were not.