Inherited Google Ads accounts rarely fail for one reason. Usually they carry a mix of small leaks and a few structural errors that send the whole account in the wrong direction. The goal of an audit is to find the structural errors first.
This guide assumes access and ownership are settled, as covered in Taking Over an Ad Account.
Prioritize by Money at Risk
| Priority | Area | Why it comes here |
|---|---|---|
| 1 | Conversion tracking | If the wrong events count, Smart Bidding optimizes the entire budget toward them. |
| 2 | Campaign settings and auto-applied recommendations | Location, network, and automated changes decide where every dollar can go. |
| 3 | Bidding and budget | Unrealistic targets and budget limits throttle or overspend whole campaigns. |
| 4 | Search terms and negatives | Waste here is real but usually contained to specific queries. |
| 5 | Ads and landing pages | Important for efficiency, but rarely the root cause of an account-wide problem. |
Week 1: Measurement
Conversion tracking statuses
Google’s conversion tracking status troubleshooting guide distinguishes several statuses. “Unverified” means the tag has never fired. “No recent conversions” means the tag works but nothing was recorded recently. “Tag inactive” and “Needs attention” point to a site-side problem, which Tag Assistant can help diagnose.
| Status | Meaning |
|---|---|
| Unverified | The tag has never fired. |
| No recent conversions | The tag works, but no conversions were recorded recently. |
| Conversions pending | No conversions in 7 days; the action may be newly created. |
| Tag inactive or Attention needed | There’s a problem with the tag not running on the site. |
Primary and secondary conversions
Beyond statuses, two issues distort the most spend:
- Micro-conversions set as primary. Page views, scroll depth, or contact page visits marked as primary conversions pull Smart Bidding toward cheap, low-value actions.
- Double counting. A purchase counted by both a Google Ads tag and an imported GA4 key event, both set as primary, inflates reported conversions and deflates reported CPA.
Fixing either one will make reported performance look worse before it gets better. Client communication should anticipate that. Conversion setup is covered in What Is Conversion Tracking?.
Week 2: Settings and Automation
Location options
The default reaches people in or interested in a location. Google’s advanced location options documentation recommends “Presence” when only people physically there should see ads, which fits local services. Local service providers can waste budget reaching people outside their service area with the interest setting.
Network settings
Search campaigns with Display Network expansion enabled serve on non-search inventory, and that traffic is blended into the Search campaign’s numbers. This mixed traffic can make Search performance look weaker than it really is.
Auto-applied recommendations
According to Google’s documentation, auto-apply can be turned on or off at any time, and the Auto-apply history tab shows which recommendations were applied. In inherited accounts, this history often explains broadened match types, added keywords, or changed bid strategies that nobody on the current team remembers approving. The auto-apply history is essential when a change happens without your team’s explicit action.
Optimization score is not a performance indicator
Google’s optimization score documentation describes it as an estimate of how well the account is set to perform. It tracks adoption of recommendations, not profit. Dismissing irrelevant recommendations raises it just as much as applying them. A 100% optimization score does not mean the account is profitable or performing well.
Week 3: Bidding and Budget
Compare each campaign’s target with its actual result over the last 30 days. A Target CPA of 95 means the target is unrealistic, the campaign lacks conversion volume, or both. Budget-limited campaigns miss late-day demand, and reallocation from campaigns that underspend usually comes before raising total budget. Strategy mechanics are covered in What Are Google Ads Bidding Strategies?.
Week 4: Search Terms, Ads, and Change History
Search terms and negative keywords
Sort search terms by cost with zero conversions, group them by intent, and check shared negative lists for conflicts with valuable keywords, as covered in What Are Negative Keywords?. Where budget goes reveals where the system thinks intent lives, and clearing out zero-conversion queries is the fastest way to find leverage in inherited accounts.
Ads and landing pages
Review disapproved ads, responsive search ad strength, and Performance Max final URL expansion. Disapproved or limited approval status causes impression loss, and in Performance Max, which landing page an ad points to matters if final URL expansion is enabled.
Change history ties it all together
When performance breaks on a specific day, the change history for that day usually shows a budget cut, a strategy switch, or an auto-applied recommendation. This is the fastest route from a performance drop to its root cause.
Summary
A Google Ads audit should follow money at risk. Measurement comes first because it steers everything else. Settings and automation come next because they decide where spend can go. Bidding, search terms, and ads follow. Optimization score measures recommendation adoption rather than results, and change history is the fastest route from a performance break to its cause.