Choosing a PPC agency comes down to checking who actually owns your ad account before checking anything else about their pitch — an agency that creates and owns the account under its own login, rather than granting you admin access to an account you control, leaves you starting from zero if you ever switch providers, losing years of audience data, conversion history, and Quality Score entirely. That single structural detail predicts more about how an agency relationship will end than any case study they’ll show you upfront.
It’s worth being explicit about why this one detail carries so much weight relative to everything else in a typical agency pitch. Case studies, testimonials, and even a strong first-call impression are all things a skilled salesperson can produce regardless of the agency’s actual day-to-day competence. Account ownership structure is different — it’s baked into how the agency’s business model works, and it’s very hard to fake or talk around convincingly in a live conversation. An agency that hesitates, deflects, or gives a vague answer about who owns the account is showing you something true about how they operate, in a way that a polished pitch deck never will.
Try It: Check the Pricing Model
Typical range: 10-20% of monthly ad spend. Watch for: misaligned incentives — the agency earns more when you spend more, whether or not results improve. Ask how they’d advise you if the right move was actually to spend less.
Typical range: $1,500-$10,000/month depending on complexity. Watch for: hidden setup fees, platform fees, and reporting fees added after the headline number — ask for the full all-in cost before signing, not just the base fee.
Typical range: Varies widely, tied to leads or conversions. Watch for: vague conversion definitions that let an agency claim credit for results it didn’t influence — get the exact conversion event defined in writing before starting.
Interactive comparison of three PPC agency pricing models: percentage of ad spend at 10-20%, flat monthly fees of $1,500 to $10,000, and performance-based pricing tied to leads or conversions, each with specific risks to watch for.
The Account Ownership Rule, Explained
Your Google Ads account should live under your own Google account, with the agency added as a user with appropriate permissions — not the reverse. This isn’t a minor administrative preference; it’s the difference between switching agencies smoothly with your historical performance data intact, and starting a brand-new account from scratch because the previous agency won’t (or structurally can’t) hand over an account it created and controls. We’d treat any hesitation on this point as disqualifying on its own, regardless of how strong the rest of the pitch sounds.
Reading the Fee Structure Honestly
Typical PPC agency flat fees run $1,500 to $10,000 monthly, with high-complexity, high-spend accounts running as high as $25,000 monthly depending on scope.
The gap between a quoted fee and the actual first invoice is where a lot of small businesses get caught off guard — setup fees, platform access fees, and reporting fees can turn a “$1,500/month” pitch into a materially larger real number. Ask for a single, all-in figure covering everything before signing, in writing, rather than accepting a headline number that turns out to be the floor rather than the ceiling.
The Red Flag Checklist
| Red flag | Why it matters |
|---|---|
| Agency owns the ad account | You lose historical data and audience insights if you ever leave |
| Specific CPL guarantee from a single intake call | No reputable agency can guarantee results before seeing real account data and market conditions |
| “$500/month, unlimited campaigns” | Either heavy automation with no human oversight, or a setup designed for aggressive future upselling |
| Reporting on clicks and impressions only | Vanity metrics without cost-per-lead or revenue context can hide an underperforming campaign |
| Long-term contract with early termination penalties | Confident agencies let month-to-month results speak for themselves |
What a Legitimate Onboarding Actually Involves
A real PPC agency starts with a genuine audit of your existing account (if you have one) or a thorough intake covering your margins, average customer value, and sales cycle — not just your monthly budget number. This matters because a campaign optimized purely for cost-per-click without margin context can generate leads that cost more to acquire than they’re worth, a mistake that looks fine on an ad platform’s own dashboard and terrible on your actual profit and loss statement. Expect the first month to be heavily focused on structure and tracking setup — conversion tracking configured correctly, negative keyword lists built out, account structure organized by actual product or service lines — before meaningful optimization can even begin.
B2B vs. Local: Different Red Flags Apply
A local service business evaluating a PPC agency should scrutinize geographic targeting precision and negative keyword discipline above all else — broad-match campaigns bleeding budget on searches from outside the actual service area is the single most common waste we see audited into existing accounts. A B2B business should focus more on whether the agency understands longer sales cycles and multi-touch attribution, since a campaign judged purely on last-click conversion will systematically undervalue the awareness-stage ads that started the buyer’s journey weeks before the eventual sale. If your evaluation is specifically about B2B lead generation and channel selection rather than agency vetting, that’s covered in more depth in our B2B PPC guide.
The Trial Period Trap
A short trial period sounds like a low-risk way to evaluate an agency, but PPC campaigns genuinely need time to gather enough conversion data for the platform’s own optimization algorithms to work well — Google Ads specifically performs better once it has 15-30 conversions to learn from, which can take a full month or more for a lower-volume account. An agency willing to take on a 30-day trial isn’t necessarily a good sign; it can mean they’re comfortable with a judgment window too short to reflect real performance, banking on the relationship converting to a full engagement before the account has actually had time to mature. We’d trust a 90-day minimum framed honestly (“this is how long the algorithm needs to learn”) more than a 30-day trial framed as low-commitment, because the shorter window structurally favors quick wins over sustainable account health.
What Good Reporting Actually Contains
Beyond avoiding vanity metrics, a genuinely useful PPC report ties spend directly to business outcomes your finance team would recognize: cost per qualified lead (not just cost per click), lead-to-customer conversion rate by campaign, and a clear breakdown of which specific keywords or ad groups are driving profitable versus unprofitable spend. A report that stops at impressions, clicks, and click-through rate is technically accurate and practically useless for a business decision — those numbers tell you the ads are being shown and clicked, not whether the business is making money from them. Ask to see a sample report before signing, and if it doesn’t include a cost-to-revenue connection, ask directly how they’d build one for your account.
Negative Keywords: The Unglamorous Work That Saves the Most Money
Ask any PPC agency directly how they build and maintain a negative keyword list, and listen closely to the answer — this is one of the least exciting parts of account management and, in our experience, one of the most consistently neglected once an account is “set up and running.” A negative keyword list stops your ads from showing on searches that look relevant on paper but never convert: a plumber excluding “how to fix a leaky faucet myself” so the ad stops burning budget on DIY searchers who were never going to hire anyone, or a law firm excluding “free legal advice” to avoid paying for clicks from people with no intention of paying for services. An agency that treats this as a one-time setup task rather than an ongoing weekly or monthly review is leaving real money on the table every month, quietly, in a way that never shows up as a dramatic failure — just a steadily elevated cost per lead that nobody investigates because the campaign is “performing fine.”
A Realistic Timeline for What “Working” Looks Like
Weeks one to two: account structure, conversion tracking, and initial campaign launch — expect little meaningful performance data yet, since the algorithm is still learning. Weeks three to six: enough conversion volume accumulates for Google’s own bidding algorithms to start optimizing toward your actual goal rather than a rough initial estimate, and this is typically when cost per lead starts trending toward a stable, predictable number rather than fluctuating wildly. Months two to three: genuine optimization work — pausing underperforming ad groups, expanding what’s working, refining negative keywords based on real search-term data rather than guesses. A firm expecting dramatic improvement inside the first two weeks is working from an unrealistic timeline that no legitimate agency can actually deliver against, regardless of skill level, simply because the platform itself needs that runway to function well.
Worked Example: What “Agency-Owned Account” Actually Cost One Retailer
A Swiss online retailer we later took on as a client had spent three years with a previous agency running Google Ads under an account the agency itself had created at the start of the relationship. When the retailer decided to switch providers after growing frustrated with reporting quality, the previous agency’s offboarding process amounted to closing access rather than transferring ownership. The retailer lost three years of accumulated conversion history, audience remarketing lists built from actual site visitors, and the account-level Quality Score history that had been quietly reducing their cost per click over time.
Starting a new account from zero meant the new campaigns launched with none of that inherited trust — Quality Scores start at a default, remarketing audiences have to rebuild from scratch, and Google’s bidding algorithms have no historical conversion pattern to learn from. The retailer’s cost per lead was roughly 40% higher for the first two months of the new engagement purely because of this reset, before gradually normalizing as the new account accumulated its own history. None of that cost would have existed if the original account had simply been created under the retailer’s own login from day one — a five-minute setup decision at the very start of the relationship that ended up costing real money three years later.
Swiss-Specific Considerations When Vetting a PPC Agency
A Swiss business running ads across German, French, and Italian-speaking regions faces a vetting question that a single-language market never has to ask: does the agency actually write native ad copy for each language, or translate one set of ads into the others? Direct translation of ad headlines and descriptions frequently produces copy that’s grammatically correct but doesn’t match how people in that region actually search or respond to an offer — a French-speaking Geneva audience and a German-speaking Zürich audience often respond to noticeably different value propositions for the same product, and an agency that hasn’t run genuinely separate campaigns for each region is likely leaving performance on the table in at least one of them.
It’s also worth asking directly how an agency handles VAT and pricing display in ad extensions and landing pages, since Swiss advertising and consumer-protection norms expect clear, accurate pricing — an agency unfamiliar with the local regulatory expectations around price transparency in ads can inadvertently create compliance exposure alongside the performance issues.
Related Guides
- what Amazon seller advertising actually costs — real cost benchmarks for sellers advertising on Amazon.
- where a law firm’s marketing budget should actually go — a channel-by-channel budget breakdown for legal marketing.
- Google Ads versus Meta Ads ROI — a direct return comparison between the two ad platforms.
Frequently Asked Questions
Who should own the Google Ads account, me or the agency?
You should. The account should live under your own login with the agency granted user access — never the reverse. This protects your historical data if you switch providers.
Is percentage-of-spend or flat-fee pricing better?
Flat-fee generally removes the incentive misalignment of percentage pricing, where an agency earns more simply by increasing your spend regardless of results. Either can work if reporting is transparent and tied to real business outcomes.
Can a PPC agency guarantee a specific cost per lead?
No legitimate agency can guarantee this before seeing real account data and testing in your specific market — treat any upfront CPL guarantee as a red flag, not reassurance.
How long should a PPC trial period be?
At least 90 days. Google Ads typically needs 15-30 conversions before its bidding algorithms optimize well, which a 30-day trial rarely allows enough time to reach for lower-volume accounts.
What should a PPC report actually show?
Cost per qualified lead and lead-to-customer conversion by campaign — not just clicks and impressions. If a sample report stops at vanity metrics, ask directly how they’d connect spend to actual revenue.
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