Most failed Reddit PPC campaigns fail for the same handful of reasons: treating Reddit like a smaller version of Google or Facebook, setting a budget too low to actually learn anything, ignoring subreddit culture, and giving up before the data has had time to settle. None of these mistakes are complicated to fix. They are just easy to miss if you are running Reddit as an afterthought alongside bigger channels rather than as its own platform with its own rules.
If you have run a Reddit campaign that quietly underperformed and you were not entirely sure why, there is a good chance one of these mistakes was involved. This article goes through them one at a time, with practical fixes for each.
Mistake one: treating Reddit like Google or Facebook
Reddit users are unusually quick to spot an ad that has been lifted straight from a Facebook campaign and dropped into a subreddit with no adjustment. The platform’s culture rewards content that reads like it belongs there, not content that reads like a broadcast. This is the same lesson that runs through top Reddit communities every PPC expert should know: the audience in r/PersonalFinanceUK behaves very differently to the audience in r/gadgets, and your creative needs to reflect that.
The fix is simple in principle and takes real effort in practice. Write ad copy for the specific subreddit you are targeting, in a tone that matches how people in that community actually talk to each other. If you would not post it as a genuine community member, do not run it as an ad either. It also helps to spend time reading the best Reddit communities for PPC and paid media marketers before you write a single line of copy, simply to get a feel for how each one talks.
Mistake two: ignoring subreddit rules and community reputation
Every subreddit sets its own rules, and many explicitly restrict or ban promotional content outside specific threads. Reddit’s own guidance is clear that promotions and advertising need to follow both sitewide and subreddit-specific policies, and falling foul of either can get your post removed or your account restricted before your campaign has even had a chance to run.
Karma, the platform’s reputation score built from upvotes and downvotes, also matters more than most advertisers expect. An account with little to no history posting in a community is more likely to be treated with suspicion. This is one of the practical points worth pairing with understanding Reddit’s advertising guidelines for PPC success: reputation on Reddit is earned slowly, and campaigns that ignore this tend to get a cold reception regardless of budget.
Mistake three: launching without clear objectives
This mistake is not unique to Reddit. It shows up across paid media generally, and it is one of the most common issues covered in five mistakes to avoid on pay per click campaigns. A campaign built around a vague goal like “get more visibility” has no way of knowing whether it succeeded. Decide upfront whether you are optimising for brand awareness, traffic, lead generation or direct sales, because Reddit’s own bidding options change depending on which one you pick, much like the choice you would make across the different types of pay per click campaigns generally.
Once you have a clear objective, the next question is how you will measure it. This is where a lot of teams stumble when setting up and managing PPC campaigns more broadly: they set a goal but never define which metric proves whether that goal has been hit.
Mistake four: underestimating the budget you actually need
Here is where a lot of confusion creeps in. Reddit’s official minimum is a genuinely low $5 a day per campaign, which works out at roughly £4 depending on the exchange rate at the time. That number is often quoted as if it is a realistic starting budget, and Reddit itself notes that ad groups can spend up to 20% over their set daily budget because of how its real-time auction works. In practice, $5 a day is a technical floor, not a workable test budget. At that level you will get too little data too slowly to learn anything useful, and you are more likely to conclude the platform does not work for you when the real problem was under-funding the test.
A more realistic starting point sits well above the minimum, and the right number depends on what you are optimising for.
| Campaign goal | Realistic daily budget | Why |
| Brand awareness or reach | £15 to £30 | Cheaper impression-based goals need less spend to gather data |
| Traffic or link clicks | £20 to £40 | Enough volume to judge click-through rate across a few subreddits |
| Conversions | £50 to £100+ | Reddit’s optimisation typically needs around 50 conversion events to leave the learning phase |
| Video views | £15 to £30 | Video inventory is relatively cheap and plentiful |
This is one of the clearer overlaps with how much pay per click advertising costs more generally: platforms differ in their minimums, but the principle that a test budget needs to be big enough to actually generate a test holds everywhere.
Mistake five: weak or overly promotional ad creative
Reddit users can be openly hostile towards ads that feel like they are talking at them rather than to them. The strongest performing creative tends to look and read like a genuine post, with a clear, honest angle rather than a polished sales pitch. This is a point that comes up repeatedly in creating effective ad copy using insights from Reddit threads: the language that performs best is usually language pulled from how real users describe the same problem, not language written by a copywriter trying to sound persuasive. The same logic applies to optimising content for Reddit search, where posts written in the community’s own voice consistently outperform anything that reads like marketing copy.
A short, practical example. Say you are running ads for an accountancy firm targeting sole traders in a small business subreddit. An ad that opens with “Unlock your business potential today” will likely be ignored or downvoted. An ad that opens with “Not sure if you need to register for VAT yet? Here’s a quick way to check” tends to get read, because it mirrors the way people already talk about the problem in that community.
Mistake six: not testing enough, or stopping too early
A single ad variant tested for two days will rarely tell you anything reliable. Reddit’s auction and delivery system needs time and volume to settle, and pulling a campaign after a short, inconclusive run is one of the more avoidable mistakes teams make. This ties closely into PPC trends you can discover from Reddit discussions, where advertisers regularly share how long it actually took before their campaigns started to perform.
Run at least two or three creative variants per ad group, give each enough budget and time to gather a meaningful sample, and resist the urge to make major changes every day or two. Small, frequent tweaks tend to reset a campaign’s learning rather than improve it.
Mistake seven: skipping proper audience and competitor research
Too many campaigns launch based on assumptions about the audience rather than actual evidence. Reddit is unusually good for this kind of groundwork, and treating it purely as an ad platform rather than a research tool is a missed opportunity. Reading discussions closely, as covered in Reddit as a source for competitive analysis in PPC campaigns, can tell you what your competitors are doing right before you spend a penny testing it yourself.
The same applies to your own audience. Several teams have had good results using Reddit as a focus group for PPC campaigns, posting genuine questions in relevant communities and using the responses to shape ad messaging before a campaign goes live rather than after it has already spent budget on the wrong angle. Digging into high-intent PPC keywords surfaced through Reddit discussions works the same way, giving you language to test rather than language you are guessing at.
Mistake eight: leaning on AI tools without understanding their limits
AI-assisted bidding and creative tools can genuinely help, but only once you understand what they are actually doing. Blindly switching on automated optimisation before you have enough conversion data is a common misstep, and it is one of the issues raised in AI in PPC and its effect on ad quality scores. The algorithm needs a reasonable volume of real results before it can make good decisions, and feeding it too little data too early tends to produce worse outcomes than manual bidding would.
The same caution applies to keyword and audience research. Tools have genuinely improved this side of PPC work, and AI powered keyword research for PPC strategy can speed up the early stages considerably, but it still needs a human check against what you have actually seen and heard from real users on the platform.
A quick, personal example
A few years ago, we tested a small Reddit campaign for a client alongside their existing search and social spend. The first version, using the same creative from their Facebook campaign, barely got any engagement and cost more per click than expected. We rewrote the ad copy specifically for the two subreddits we were targeting, matched the tone of top posts in those communities, and left it to run for two full weeks rather than judging it after two days. Click-through rate improved noticeably, and cost per click came down. Nothing about the offer changed. What changed was that the ad finally looked like it belonged on the platform it was running on.
Where Reddit PPC fits into a wider strategy
Reddit rarely works best as a standalone channel. It tends to perform better as one part of a broader paid media plan that also includes search and social. If you are running a PPC marketing agency account, the research and creative testing you do on Reddit often feeds directly into your Google Ads agency in London campaigns and vice versa. The same applies to Facebook ads agency in London work and LinkedIn advertising in London campaigns, where audience language and objections often overlap even though the platforms themselves behave differently.
It is also worth checking what your competitors are doing in the same spaces, which is where monitoring competitor SEO strategies using Reddit becomes a useful habit rather than just a curiosity. If your organic content strategy already draws on SEO services work informed by real user language, extending that same research into paid creative is a fairly small step.
Finally, it is worth being honest about capacity. Running Reddit properly alongside several other paid channels takes time, and this is one of the reasons the question of managing your Google Ads campaign yourself or hiring an agency comes up so often. The same trade-off applies to Reddit: doing it properly means doing the research, the testing and the ongoing management, not just switching on a campaign and hoping.
FAQs
What is the minimum budget for Reddit ads?
The platform’s official minimum is $5 a day per campaign, roughly £4. Most advertisers need considerably more than this to gather enough data for the auction to optimise properly.
Why is my Reddit ad getting no engagement?
The most common causes are creative that reads as too promotional, targeting a subreddit where the audience does not match your product, or a budget too low to generate meaningful delivery.
How long should you run a Reddit ad before judging performance?
Give a campaign at least one to two weeks and enough budget to reach a meaningful sample size before making major changes. Judging performance after a day or two rarely gives an accurate picture.
Can you run the same ad across multiple subreddits?
You can, but performance usually improves when creative is adapted to match the tone and interests of each specific community rather than reused unchanged.
Getting your Reddit PPC strategy right
If you want a second opinion on whether your current Reddit campaigns are set up properly, or you are considering testing the platform for the first time alongside your existing paid media, get in touch with Flow20. We can look at your current setup and tell you honestly whether Reddit is worth the investment for your specific audience.
