What separates the best PPC agencies from the rest
The best PPC agency is the one that can tell you which clicks made you money and which ones only made you busy. That sounds obvious. Most cannot do it, because it requires measurement work that nobody wants to sell and clients rarely want to pay for.
PPC across Google, Microsoft, Meta, LinkedIn and the rest is not a bidding competition any more, the platforms automate most of the bidding. What is left is judgment: which intent to chase, what to say, where to land people, and what to count as success. Agencies that are good at PPC are really good at those four.
A campaign with no tracking is just a very expensive trust exercise.
Fee models, and what they quietly reward
Three common structures, three different sets of incentives.
- Percentage of spend (usually 10–20%). Scales neatly. Also means the agency earns more when you spend more, which is fine right up until the day the right advice is "spend less".
- Flat retainer. Predictable, and neutral on spend. The risk is attention: a small account can quietly become a low priority.
- Performance-based. Sounds ideal. Works only when the metric is a real business outcome. Tie a bonus to "leads" and you will get leads, all sorts of leads, from all sorts of people.
None of these is a scam. But you should be able to answer this question about whichever one you pick: what does this agency earn if it tells me the truth? If the truthful advice costs them money, expect to hear it less often.
The thing nobody in this industry wants to say
More budget is not a strategy. It only makes the current strategy louder.
If the account is converting at a price that works, more budget is a good idea. If it is not, more budget is a faster way to find out you were wrong. The uncomfortable truth is that most "scale the account" conversations happen before anyone has established whether the account is actually healthy at its current size.
A good agency will run that check first: is the cost per qualified enquiry sustainable, does the sales team rate the leads, does the math still work when you strip out the customers who would have bought anyway. If those answers are shaky, the answer is not a bigger budget. It is a better account, and possibly a better landing page.
Five questions worth asking
- "Which channels would you NOT run for us, and why?" An agency that recommends everything is selling capacity, not strategy.
- "Show me a search terms report." For search PPC, this is where waste hides in plain sight.
- "How do you define a qualified lead, and who decides?" Ideally your sales team decides, and the data flows back into the campaign.
- "What is your first 30 days?" Fixing tracking and cutting waste is the right answer. Launching six campaigns is not.
- "When would you tell us to stop spending?" Everyone should have an answer. Very few do.
Google's Quality Score documentation is a useful sanity check on the first-30-days answer: relevance and landing page experience directly affect what you pay per click. An agency that plans to "get the campaigns live and optimize from there" is planning to pay a premium for the privilege.
When PPC is the wrong spend entirely
PPC buys attention from people who are already looking. It cannot manufacture demand that does not exist, it cannot fix a broken sales process, and it cannot rescue a page that does not explain the offer.
- Nobody is searching for what you sell. Then you have a demand creation problem, and paid social or content is the honest recommendation.
- Your margin cannot absorb the click price. Run that math before the retainer, not after.
- Leads are not being followed up. Cheaper leads will not fix a revenue problem caused by silence.
- Your tracking is broken. Then you are not running PPC. You are donating.
If it is that last one, start with analytics and tracking and come back to the ads when the numbers mean something. If it is genuinely a demand problem, paid social and video is a better first dollar than search. And if search really is right, that is what our paid ads work is built around.
What to watch every month, even if you hire someone
Hiring an agency does not mean handing over judgment. You do not need to know how to build a campaign, but you should be able to tell within ten minutes whether anyone is actually working on your account. Five things do that.
- The search terms report. Not the keyword list, the actual searches that triggered your ads. If a month has passed with no new negative keywords, nobody has looked. Automation keeps finding creative new ways to spend your money, and somebody has to keep saying no.
- Conversion values, not just counts. Google's conversion measurement documentation is clear that you can pass a value with each conversion. Most accounts never do, which means the platform treats a $50 enquiry and a $50,000 enquiry as identical, and optimizes accordingly.
- Which bidding strategy is running, and why. Smart Bidding is very good at pursuing whatever you tell it to want. Point it at a badly configured conversion and it will chase the wrong outcome with total commitment.
- Cost per qualified enquiry, not cost per lead. The gap between those two numbers is where most disappointing PPC lives. If your sales team is not grading leads, nobody knows which half of the budget works.
- What changed, and why. A report that lists metrics is a receipt. A report that explains decisions is a service.
None of that requires you to become a specializt. It requires one question ("what did you change this month, and what happened?") and the judgment to notice whether the answer describes a decision or a coincidence.
The agencies worth keeping welcome that question, because it lets them show their work. The ones that get defensive are usually defending an account nobody has opened since onboarding.
Frequently asked questions
What makes the best PPC agency?
The ability to tell you which clicks made money and which only made you busy. That requires real measurement work, not just campaign management. Judge an agency on how it defines a qualified lead, how it handles the search terms report, and whether it will tell you to spend less.
How much does a PPC agency charge?
Typically 10–20% of ad spend, a flat retainer, or a performance-linked fee. Each creates different incentives: percentage models reward higher spend, flat retainers can under-serve small accounts, and performance models only work when the metric is a genuine business outcome rather than raw lead count.
Should I increase my PPC budget?
Only if the account already converts at a price that works. More budget makes the current strategy louder, not better. Check the cost per qualified enquiry, whether your sales team rates the leads, and whether the math survives without the customers who would have bought anyway.
When is PPC the wrong choice?
When nobody is searching for what you sell, when your margin cannot absorb the click price, when leads are not being followed up, or when tracking is broken. In the first case you have a demand creation problem; in the last, you cannot tell a good campaign from a bad one, so fix measurement first.