Google Ads generates more data than most business owners know what to do with. Reports can show dozens of metrics, but most of them are distractions. Knowing which numbers actually matter is the difference between informed decisions and expensive confusion.
The Only Metrics That Matter for Profitability
Start with three numbers: cost, conversions, and conversion value. Everything else is context.
Cost is straightforward—what you spent. If you can't immediately find this number in a report, something is being hidden.
Conversions should represent actual business outcomes, not soft metrics. A form submission is a conversion. A phone call might be a conversion. A page view is not a conversion, regardless of what Google's default tracking counts.
Conversion value tells you whether conversions are profitable. A $1,000 sale matters more than ten $20 sales. If your reports show conversions without values, you're missing the most important piece of the picture.
Return on Ad Spend (ROAS)
ROAS divides conversion value by cost. A ROAS of 4.0 means you generated $4 in tracked revenue for every $1 spent. Whether that's good depends entirely on your margins.
An e-commerce business with 50% margins needs at least 2.0 ROAS to break even. A SaaS company with 80% margins and high lifetime value might profit at 0.5 ROAS on first purchases.
Compare ROAS against your break-even point, not against arbitrary benchmarks. A "good" ROAS for your competitor might bankrupt your business.
Cost Per Acquisition (CPA)
CPA shows what you paid per conversion. It's useful for comparing campaigns and tracking trends over time, but it means nothing without context.
Know your target CPA before reviewing reports. If a customer is worth $200 in lifetime profit, paying $180 to acquire them might be acceptable. Paying $220 is not.
Watch CPA trends more than absolute values. A campaign at $50 CPA that was $30 last month needs investigation, even if $50 is technically profitable.
Click-Through Rate (CTR)
CTR measures how compelling your ads are—what percentage of people who see your ad click on it. Higher CTR generally means more relevant ad copy and keywords.
But high CTR with low conversions means you're attracting clicks from people who don't become customers. CTR optimisation only matters if those clicks convert.
Quality Score
Quality Score affects how much you pay per click. Higher scores mean lower costs. Google calculates it based on expected CTR, ad relevance, and landing page experience.
Monitor Quality Score at the keyword level. Scores below 5 usually indicate poor keyword-ad-landing page alignment. Fixing alignment issues reduces costs without changing bids.
What Reports Should Tell You
A good report answers specific questions:
- Is this campaign profitable?
- Where is money being wasted?
- What should we do differently?
If a report shows lots of numbers but doesn't clearly answer these questions, it's not useful. Impressive-looking reports can obscure poor performance behind walls of data — focus on the numbers tied to business outcomes, not activity volume.
The viaCMO platform generates reports focused on accountability—clear metrics tied to business outcomes, not vanity statistics designed to look good.
Red Flags in Reports
Watch for these warning signs:
- Missing conversion data: You can't optimise what you don't measure
- Emphasis on impressions or clicks: These are costs, not results
- Averages without segments: Good performance can hide bad campaigns
- Month-over-month only: Compare against the same period last year for seasonal businesses
Request raw data access. You own your advertising data. Full access should be non-negotiable in any management relationship — it's not a favour, it's a baseline. For SMBs working with an external Google Ads agency, independent access to the underlying data is what separates accountability from activity reporting.
Understanding your reports is the first step toward accountability. Get started with viaCMO for clear, actionable reporting on your Google Ads performance.