How to Choose a PPC Agency You Can Trust

1. Define Your PPC Goals Before You Talk to Any Agency

If you skip this step, you end up comparing apples to oranges, and each agency will push whatever fits its default playbook. Lock your goals first.

What to write down before your first call

• Name your primary goal: lead volume, cost per acquisition or return on ad spend. Pick one as your main measure and let the others follow from it.
• Set a realistic monthly budget range. Be honest about what you can sustain for several months, not just what sounds good on a slide.
• Define what success looks like in 90 days. If you need a certain number of qualified leads per month below a set cost per acquisition, write those numbers down. Agencies will build their strategy around whatever target you give them.
• Decide between brand awareness campaigns and conversion-focused campaigns. Awareness campaigns buy impressions but rarely drive phone calls on their own, while conversion campaigns go after people with intent. Some agencies steer clients toward whichever one is easier to report on, so specify the one you want.

How to set a realistic budget

Work backward from your break-even cost per acquisition, then leave room for a testing period, since cost per acquisition often runs higher while campaigns gather data and settle.

2. Vet Their Google Ads and Microsoft Advertising Expertise

PPC agencies vary widely. Some treat paid search as a side service, while others specialize in it, and the difference shows up quickly once you ask the right questions.

Step-by-step verification

1. Ask about their Google Ads and Microsoft Advertising certifications. Certified specialists on your account are a reasonable baseline, though certification alone does not prove results.
2. Request two or three campaign examples in your industry or a close vertical, such as law, accounting, home services or healthcare. Results from an unrelated sector tell you little about how they will handle your market.
3. Check whether they manage both Google Ads and Microsoft Advertising or only one. Many agencies ignore Microsoft's search network, where clicks can cost less because fewer advertisers compete for them.
4. Ask how many accounts each manager handles and whether a senior specialist or a junior associate will run yours. A manager juggling too many accounts cannot give your campaigns the attention they need.

What to ask about their team structure

Request the name of the person who will build your campaigns, not just the salesperson. That is the person writing the ad copy, building the keyword list and adjusting bids when a campaign goes off track, and you want that name on the proposal.

Before you move forward: if you want to know whether your website is ready to convert paid traffic, a free website audit gives you a baseline before you talk to any agency.

3. Demand a Transparent Pricing Model With No Surprises

Pricing is where many agency relationships go sideways. Review these common models before any call.

• Flat monthly retainer

  How it is usually set

  A fixed fee tied to a defined scope

  Pros

  Predictable budget, clear scope, no surprise bills

  Cons

  May include work you do not need; inflexible if spend changes

  Best for

  Firms that need steady lead flow

• Percentage of ad spend

  How it is usually set

  Commonly around 10 to 20 percent of monthly spend

  Pros

  Fee grows with the account as it scales

  Cons

  Can reward pushing more spend; harder to forecast

  Best for

  Growing businesses that want hands-off scaling

• Performance-based

  How it is usually set

  Share of revenue or pay per acquisition

  Pros

  Ties pay to results

  Cons

  Rare; often paired with a base fee; needs reliable tracking

  Best for

  Mature businesses with solid conversion tracking already in place

Be cautious with agencies that will not disclose pricing upfront or quote a "starting at" figure without a clear scope. For a fuller breakdown of what you pay the platform versus the agency, see Google Ads cost for small business.

4. Judge Their Reporting and Communication

An agency that cannot explain its work clearly can hide a lot behind the word "optimizations." Use this test before signing.

The 3-question reporting test

Ask these three questions during your call. Weak answers to two or more are a strong sign to keep looking.

1. "Can I see a sample report?" A useful report shows spend, clicks, conversions, cost per acquisition and return on ad spend at a glance. A PDF full of charts with no summary is vanity reporting.
2. "What is your reporting cadence?" Weekly or biweekly updates are common, and a live dashboard you can check at any time is better than waiting for a monthly email.
3. "How do you build your reports?" Look for reporting connected directly to the ad accounts and your analytics, with conversions you can verify. Reports assembled by hand tend to drift from the real data as campaigns grow.

What a good dashboard looks like

A useful dashboard answers three questions quickly: what you spent, what you got back and what changed compared with last period. Everything else is secondary.

5. Ask the 7 Questions That Separate Pros from Amateurs

This is the core of your evaluation. Run through these seven questions with every agency on your short list.

1. "What is your experience with my industry?" Expect case studies with specifics, not a vague "we have worked with similar clients." Skyline's own case studies show the level of detail worth asking for. Past results do not guarantee future outcomes, but they show the depth of execution.
2. "How do you handle underperforming campaigns?" A good answer describes a documented optimization process. "We will adjust" without a process behind it is guessing.
3. "What cost per acquisition or return on ad spend do you see for businesses like ours?" They should give a range, not a guarantee. No one can promise a number before seeing your data.
4. "Who will be my day-to-day contact?" If they say "the team," ask for a named person so one person is accountable.
5. "What is your onboarding timeline?" Setup usually takes a few weeks, covering tracking, account structure and ad copy. An agency promising a full campaign live within days may be skipping tracking and research.
6. "How do you handle negative results?" Be wary if they blame the algorithm or Google. A professional agency takes ownership and explains what changed.
7. "What happens if we part ways?" Expect a clear offboarding plan covering data handoff, final billing and account access. Insist that the ad accounts are owned by your business, not the agency.

6. Watch for These 5 Red Flags Before You Sign

Many agencies look great on paper until you dig in. Watch for these five warning signs.

• They promise guaranteed results or a specific return on ad spend. No one can guarantee that outcome before running your campaigns.
• They sell a template instead of asking about your business before pitching. A real partner asks about your margins, your current leads and your competition.
• They refuse to share a sample report or case study, which usually means they have little to show.
• They push you into a long contract before you have run a test. An agency confident in its work can usually offer a shorter initial term.
• They use vague language like "we will optimize" without explaining whether that means keywords, bids, ad copy or landing pages. Ask for specifics.

The contract red flags

Look for auto-renewal clauses, early termination penalties and vague scope definitions. If the contract says "services as deemed necessary" without listing deliverables, ask for a rewrite or walk away.

The communication red flags

If they are slow to reply during the sales process, expect them to be slower once the contract is signed. Responsiveness while they are trying to win your business is a fair preview of the relationship.

7. How to Make the Final Decision Like a Buyer

Once you have vetted three to five agencies, score them on the same criteria rather than picking whoever had the friendliest call.

Score each agency on four criteria:

• Expertise. Weight this at 30 percent if you are in a complex vertical like law, healthcare or accounting, where industry experience matters most.
• Pricing. Weight this at 25 percent if you are on a tight budget and need predictability; flat retainers are easier to plan around when cash flow is tight.
• Reporting. Weight this at 25 percent if you need transparency. A live dashboard and verifiable conversion data should be standard.
• Communication. Weight this at 20 percent, or higher if a past agency went quiet on you. Response time and a named contact matter.

Weight expertise highest if your industry has specific compliance rules, complex buyer journeys or seasonal demand swings. Weight pricing highest if you are a small firm that cannot absorb a surprise bill. Weight communication highest if your last agency stopped responding and never explained why.

Where Skyline Fits Into This Framework

Skyline Digital Marketing offers Google Ads management alongside search, content, web development and analytics and reporting services. Hold any agency you consider, including Skyline, to the same checklist above.

If you want a starting point tied to your own site, begin with the free website audit.