Free Google Ads audit: a one-hour checklist you can run yourself

A free Google Ads audit is a structured check of your own account, done with nothing more than the Google Ads interface and a spreadsheet. In about an hour you can confirm conversion tracking works, find the search terms and keywords that waste budget, and spot structural problems like overlapping campaigns. This guide gives you the step list, a checklist table, an honest view of free audit tools, and the signs that you need a deeper review.

What does a free Google Ads audit actually check?

A good audit answers four questions in order. Each one depends on the one before it.

1. Can I trust the numbers? Conversion tracking, attribution and the primary conversion goals.
2. Where is money leaking? Irrelevant search terms, non-converting keywords, wrong locations, wasted Performance Max inventory.
3. Is the structure fighting itself? Overlapping campaigns, budget-limited winners next to underspending losers, Performance Max and Search competing for the same queries.
4. Is the creative pulling its weight? Ad and asset strength, message match with landing pages, stale ads.

Most bad audits skip question 1. If a form submit fires twice, or a newsletter signup counts as a lead, every downstream recommendation is built on sand.

How to run a free Google Ads audit in one hour

Use the last 30 days for the waste checks and the last 90 days for anything involving conversions, so low-volume B2B accounts have enough data to judge.

Step 1: verify conversion tracking (10 minutes)

• Open Goals > Conversions > Summary. List every conversion action, whether it is primary or secondary, and its status.
• Flag any action marked primary that is not a real business outcome (page views, scroll depth, newsletter signups for a sales-led business).
• Check for duplicates: two actions measuring the same form, or a GA4 import and a Google tag both counting the same event.
• Look at the conversion count trend. A sudden drop to zero or a sudden doubling usually means a tag broke or was duplicated, not that performance changed.

Stop rule: if tracking is broken, write that down as finding number one and treat every CPA in the rest of the audit as unreliable.

Step 2: read the search terms report (15 minutes)

• Go to Campaigns > Insights and reports > Search terms. For Performance Max, pick Search terms and landing pages for Performance Max from the report dropdown.
• Sort by cost. For the top 50 terms, mark each as relevant, irrelevant or unclear.
• Total the spend on irrelevant terms. That number is your clearest waste figure.
• Note the gap between the report total and the campaign total. Google omits low-volume terms for privacy, so part of your spend is always invisible here. Our search terms report guide covers how to read around that gap.

Step 3: find non-converting keywords and negatives gaps (10 minutes)

• In the keywords view, filter to keywords with spend above roughly two times your target CPA and zero conversions over 90 days.
• Check that a shared negative keyword list exists and is applied to every Search campaign. Check the account-level negative list under Admin > Account settings > Negative keywords, which also applies to Performance Max.
• If you run Performance Max, check whether it has any campaign-level negatives. Since 2025 it supports them; see the negative keywords guide.

Step 4: check settings that silently leak budget (10 minutes)

• Location option: “Presence or interest” will show ads to people outside your target area who are merely interested in it. Most B2B advertisers want “Presence.”
• Networks: Search campaigns with Display expansion turned on often send cheap, low-intent clicks.
• Search partners: Check segment performance before deciding; do not assume either way.
• Bid strategy vs. volume: A Target CPA strategy on a campaign with a handful of conversions a month is mostly guessing.
• Budget limited: Note which campaigns are limited by budget and whether those are the best performers.

Step 5: structure and overlap (10 minutes)

• List campaigns side by side with spend, conversions and cost per conversion.
• Look for two campaigns targeting the same intent, such as a broad match Search campaign and a Performance Max campaign both chasing the same category terms. The Performance Max vs Search guide explains which one wins the auction and why.
• Check brand traffic. If Performance Max is reporting great results, see how much of it comes from your own brand name. Brand exclusions or brand negatives can separate the two.

Step 6: creative and landing pages (5 minutes)

• Check ad strength on responsive search ads and asset group strength in Performance Max. “Poor” usually means too few distinct headlines.
• Open the top three landing pages on a phone. Does the headline match the ad? Is the form above the fold? Does it load quickly?

Free Google Ads audit checklist

Copy this into a sheet and fill in the “Finding” column as you go.

The thresholds in the “Red flag” column are working rules of thumb, not Google benchmarks. Adjust them to your margins and sales cycle.

What do free Google Ads audit tools catch, and what do they miss?

There are two kinds of free audit tool: Google’s own Recommendations page and optimization score, and third-party grader tools (WordStream’s Google Ads Performance Grader is the best known) that connect to your account and produce a scored report.

Google’s optimization score

Google defines optimization score as “an estimate of how well your Google Ads account is set to perform,” shown as 0 to 100% next to a list of recommendations. It covers active Search, Display, Video Action, App, Performance Max, Demand Gen and Shopping campaigns, and Google states it is not used by Quality Score.

What it is good for:

• Catching missing basics: absent assets, broken or missing conversion tags, disapproved ads.
• Surfacing keyword and negative ideas you can then judge yourself.

What it misses:

• It scores alignment with Google’s recommendations, not profit. Many recommendations raise spend: higher budgets, broader match types, automated bidding with looser targets.
• It cannot tell a good lead from a bad one. A B2B account optimizing to cheap form fills can score highly while sales rejects most of the leads.
• It has no view of your business context: margins, sales capacity, seasonality, which product lines matter.

Treat it as a to-do list to review, not a grade to chase. Google’s own help notes an account can reach 100% “by applying or dismissing all recommendations,” so dismissing ones that do not fit your business is a legitimate move.

Third-party grader tools

Grader-style tools typically score things like Quality Score distribution, click-through rate, impression share, wasted spend and account activity, then compare them with benchmarks. They are quick and they catch surface hygiene.

Their blind spots are the same as optimization score, plus a few of their own:

Many graders are also lead-generation tools for the vendor that built them, so expect the report to point toward their product.

When is a deeper Google Ads review worth it?

A one-hour audit finds the obvious leaks. A deeper review is worth the time (or the fee) when any of these are true:

• Spend is material. If 10% waste is more money than a few days of expert time, the math is easy.
• Conversions are leads, not revenue. You need to connect search terms and campaigns to qualified pipeline, which no in-platform tool can do on its own.
• You run Performance Max next to Search. Overlap, brand inflation and channel mix need a side-by-side read across campaigns.
• Results changed and you cannot explain why. Change history, auction insights and conversion lag need a careful timeline.
• The free audit raised questions you cannot answer from the UI, such as whether a “converting” keyword actually produces customers.

For the deep versions, use our Google Ads campaign review, which splits a review into parallel workstreams with thresholds and cross-checks, and the Google Ads account strategy review, which covers the cross-campaign decisions a single-campaign audit cannot see.

How often should you audit a Google Ads account?

• Weekly: search terms and negatives, budget pacing, anything newly disapproved.
• Monthly: keyword and asset performance, bid strategy fit, landing page checks.
• Quarterly: full structure review, conversion setup, campaign overlap, and the account-level questions.

A one-off audit decays quickly because search terms, competitors and Google’s automation keep changing. The weekly checks are where most of the recoverable waste is.

Making the weekly audit stick

The hard part is not knowing what to check; it is doing it every week. If you want that cadence without the manual hour, GTM Hacker’s paid ads reviews run a weekly AI review of each tracked Google Ads campaign against a written playbook and produce a report, ranked change proposals and follow-up tasks. Spend-affecting and irreversible changes always wait for a person to approve them; low-risk fixes can be set to auto-approve per campaign, or not.