A Google Ads audit is a structured review of your account that finds where your budget is going, why your campaigns underperform, and what needs fixing before you spend another pound. Done properly, it produces a prioritised list of changes with a clear cost-or-revenue case attached to each one. A free audit, typically automated or done quickly by a sales rep, gives you a fraction of that picture.
What does a paid Google Ads audit actually look at?
The short answer: everything that touches your cost per lead or return on spend. That means the account structure, the bidding strategy, the keyword list, the match types, the negative keywords, the ad copy, the conversion tracking, the landing pages, the audience settings, and the Quality Scores across every campaign.
Each one of those areas can hide money. A loose keyword list bleeds spend on searches that will never convert. A misconfigured conversion action means your smart bidding is optimising toward phantom leads. A landing page that loads slowly on mobile drives up your cost per click because Quality Score falls.
A proper audit works through these areas in sequence. Each step builds on the last, because the findings in one area often explain problems in another. That sequenced approach is what turns a list of flags into a clear, prioritised action plan.
You can use the Google Ads Audit Checklist to see the full scope of what a methodical review covers before you commission one or attempt one yourself.
What does a free Google Ads audit actually do?
A free audit is nearly always one of two things. Either it’s an automated tool that scores your account against a set of generic best-practice rules, or it’s a sales call dressed up as a review.
The automated version flags obvious issues: low ad strength ratings, missing ad extensions, campaigns with low impression share. These are real signals, but they’re surface-level. The tool has no idea whether your bidding target is calibrated to your actual margin, whether your conversion tracking is firing correctly, or whether the keywords that look fine in the platform are actually attracting the wrong buyers.
The sales-call version is quicker still. Someone logs into your account briefly, notes the largest budget campaigns, and tells you things look messy. The output is a slide deck designed to make you feel your account is broken and they’re the fix.
Neither of these is worthless. They can point you toward problem areas. But they won’t tell you how much those problems are costing you, and they won’t give you a prioritised action plan with numbers behind it.
Which specific problems does a proper audit find that a free one misses?
Conversion tracking errors
This is the single most common and most damaging problem in Google Ads accounts. If your conversion events are firing on page loads rather than form completions, or if you’re counting the same lead multiple times, your campaign data is wrong. Smart bidding learns from that data, and everything downstream is compromised.
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Get Your Free Growth Plan →A free audit tool won’t check whether your conversion events actually match real business outcomes. A proper audit tests the firing conditions, checks for duplicate conversions, and confirms that what Google calls a conversion is what you would call one.
Negative keyword gaps
Most accounts have a negative keyword list. Few have one that’s actually doing the job. A proper audit pulls the search terms report back across a meaningful time window, looks at what real searches have triggered your ads, and identifies the ones you’re paying for that have no realistic chance of converting.
Say a firm spends £4,000 a month on Google Ads. If 20% of that spend is going to irrelevant searches, that’s £800 a month in recoverable budget. A free tool won’t look at the actual search terms. It checks whether a negative list exists, not whether it’s working.
Bidding strategy mismatches
Smart bidding works when the data it’s fed is clean and the target is set correctly. A Target CPA set too low starves the campaign of impressions. A Target ROAS set too aggressively stops the algorithm from bidding on searches that would convert at a reasonable rate. And any smart bidding strategy running on fewer than the recommended number of conversions per month is learning from too little signal to be reliable.
A free audit won’t interrogate whether your bidding targets make sense relative to your actual margins. That calculation requires knowing your cost structure, which a brief review can’t establish.
Account structure problems
Campaigns that are too broad mix high-intent and low-intent terms in the same budget pool. The algorithm learns a blended signal, and your best terms end up competing for budget with your worst. A proper audit looks at how campaigns and ad groups are segmented and whether the structure gives the algorithm clean signals to learn from.
Quality Score and landing page alignment
Quality Score is a rough signal, not a precise metric, but it does reflect how well your ad copy and landing pages match what searchers expect. A low score on competitive terms means you’re paying more per click than competitors who’ve aligned their copy and pages better.
A proper audit looks at the landing pages your ads point to. If your ad promises a specific service and the landing page is your homepage, that’s a conversion problem as much as a Quality Score problem. This connects directly to what happens after the click, which is where most of the money is won or lost. If your landing page hasn’t been reviewed separately, a landing page audit is usually a worthwhile next step.
What does the output of a proper audit look like?
A good audit delivers findings ranked by impact, with a clear explanation of the problem and a specific recommendation for each one.
The priority order matters. Fixing conversion tracking first changes everything else you do next. Fixing ad copy before you fix tracking gives you better-written ads optimised against bad data.
The output should also give you a decision, not just a list. For each finding, you should know whether this is something you can fix yourself, something that needs specialist input, and roughly what fixing it is worth in cost reduction or lead improvement.
How does an audit lead into ongoing management?
An audit is a point-in-time review. It finds what’s wrong today. The fixes it recommends may take weeks to move through the learning cycles that smart bidding requires before results change.
If you’re handling the account yourself, a good audit gives you a structured to-do list and the reasoning behind each item. If you’re working with an agency, the audit should inform the initial period of work, not sit in a folder.
Find out more about how we approach account management.
What should you check before paying for any audit?
Ask these questions before you hand over account access:
- Will you get a written report with specific findings, or just a call with recommendations?
- Does the audit cover conversion tracking verification, not just campaign structure?
- Will the findings be prioritised by potential impact?
- Is the audit fee credited against any ongoing work if you proceed?
- Who actually does the review, a senior specialist or a junior account manager?
A yes on all five gives you a working document rather than a sales pitch.
Is the audit fee worth it?
That depends on your monthly spend and how long the account has been running without a structured review. The higher your spend and the longer since the last audit, the more likely there are compounding problems, because bad structure and bad data compound over time.
Say a firm spends £4,000 a month and the audit identifies 20% of that going to irrelevant searches (£800 in recoverable budget), plus a conversion tracking issue that’s been misdirecting smart bidding for four months. In many cases the recovered spend alone covers the audit fee within the first month.
The fee for a proper audit is a one-off cost. Wasted ad spend repeats every month until someone finds it.
FAQ
What is a Google Ads audit?
A Google Ads audit is a structured review of an advertising account that checks how campaigns are built, how budgets are allocated, whether conversion tracking is accurate, and whether the bidding strategy is set up to meet the account’s actual business goals. The output is a list of specific problems and recommended fixes, ranked by the likely impact on cost or lead quality.
How long does a Google Ads audit take?
A surface-level automated review takes minutes. A proper manual audit of a live account with multiple campaigns, a meaningful search terms history, and conversion data to verify takes considerably more time than an automated scan. The depth of the review determines how useful the findings are.
Can I audit my own Google Ads account?
You can work through the main areas yourself using a structured checklist. The Google Ads Audit Checklist covers the key areas to check. The limitation of a self-audit is that it’s hard to spot problems you don’t know to look for, particularly around conversion tracking setup and bidding strategy logic.
What is the difference between a free Google Ads audit and a paid one?
A free audit is usually automated, checking for surface-level issues against generic best-practice rules, or it’s a brief sales-led review designed to identify enough problems to justify a pitch. A paid audit goes deeper: it checks whether your conversion events reflect real business outcomes, whether your negative keyword list is actually working, and whether your bidding targets make sense given your margins. The depth is different, and so is the output.
What happens after the audit?
The audit produces a prioritised list of changes. Some you can action immediately with no risk, such as adding negative keywords or fixing a duplicate conversion event. Others, such as restructuring campaigns or changing bidding strategies, need to be sequenced carefully because they restart machine-learning cycles. A good auditor will tell you the order in which to make changes and what to watch for in the weeks that follow.
