PPC Audit: What’s Actually Broken in Your Account

A PPC audit is a structured review of a paid search or paid media account, designed to identify where budget is being wasted, where performance is being left on the table, and where the account structure itself is working against you. Done properly, it gives you a clear picture of what to fix and in what order.

Most accounts, even those that look like they’re performing, have significant inefficiencies buried inside them. The audit is how you find them before they compound into something expensive.

If you want broader context on how PPC fits into a full paid media strategy, the Paid Advertising Master Hub covers the landscape from channel selection through to measurement and agency management.

Why Most PPC Accounts Need an Audit

Paid search accounts accumulate decisions. Every campaign that was set up in a hurry, every keyword added during a brainstorm that never got reviewed, every bid strategy switched during a panic, every ad variation that was never properly tested and never properly killed. Over time, those decisions layer on top of each other and the account becomes something nobody fully understands.

I’ve seen this across industries. When I was growing iProspect from around 20 people to over 100, we inherited accounts from clients who had been running paid search for years with reasonable results on the surface. But when we actually got inside the accounts, the structure was a mess. Campaigns set up for one business objective were still running under a different one. Match types were all over the place. Negative keyword lists were either nonexistent or hadn’t been updated in 18 months. The accounts were performing in spite of themselves, not because of good management.

That’s the thing about PPC. A poorly structured account can still generate conversions. The platform is powerful enough to find some signal even through significant noise. But it’s doing it inefficiently, and you’re paying the difference.

The audit is how you quantify that difference and create a plan to close it.

What a PPC Audit Actually Covers

There’s no single standard format for a PPC audit, but any audit worth doing should work through the following areas systematically. Skipping one of them usually means missing the actual problem.

Account Structure

This is where most audits should start, because structural problems create downstream problems everywhere else. If campaigns aren’t cleanly segmented by intent, audience, or product category, it becomes very difficult to control budget allocation, read performance data accurately, or make meaningful optimisation decisions.

A well-structured account gives you control. A poorly structured one gives you noise. The audit should map what the current structure is, what it was presumably designed to achieve, and where the two things have diverged.

Conversion Tracking

Before you can trust any performance data, you need to verify that what’s being counted as a conversion is actually a conversion. This sounds obvious. It’s also one of the most consistently broken things in PPC accounts.

Common problems include duplicate conversion actions firing multiple times for a single event, soft conversions like page views or time on site being weighted equally with actual purchases or leads, tracking that fires on the confirmation page but breaks when the URL structure changes, and import errors between Google Ads and Google Analytics that mean the numbers in both platforms never quite match.

If your conversion tracking is wrong, every optimisation decision built on top of it is also wrong. The audit needs to verify this layer first, before drawing any conclusions about campaign performance. Understanding which PPC metrics actually matter is a useful starting point for knowing what you should be tracking and why.

Keyword Coverage and Match Types

Keyword strategy in PPC is not a set-and-forget exercise, but many accounts are managed as if it is. The audit should look at whether the keyword list still reflects how potential customers are actually searching, whether match types are being used in a way that controls spend rather than letting it bleed into irrelevant queries, and whether there are obvious gaps in coverage for high-intent terms.

The search terms report is the most important document in this part of the audit. It shows you what queries are actually triggering your ads, and it almost always contains surprises. Wasted spend on irrelevant queries is one of the fastest wins in any audit, and it comes directly from this report. Keyword research for PPC is a discipline in its own right, and the audit is a good moment to assess whether the original research was solid or whether it was done quickly and never revisited.

Negative Keywords

Negative keywords deserve their own section because they’re chronically under-managed. Most accounts have some negatives, but very few have a systematic approach to building and maintaining them. The audit should review what’s currently excluded, identify obvious gaps from the search terms report, and check whether negatives at the campaign or ad group level are accidentally blocking traffic that should be converting.

Ad Copy and Creative

The audit should assess whether ad copy is genuinely differentiated or whether it’s saying the same thing as every competitor in the auction. It should check whether responsive search ads have enough headline and description variation to give the system something to work with. And it should look at whether ad copy is aligned with what the landing page actually delivers, because a disconnect there will show up in Quality Score and in conversion rates.

I’ve judged the Effie Awards, and the work that wins at that level tends to have a clarity of message that most PPC ad copy completely lacks. The constraints of a 30-character headline are real, but they don’t excuse lazy copy. The audit is a good moment to be honest about whether the ads are actually compelling or just present.

Landing Pages

PPC performance doesn’t end at the click. The landing page is part of the system, and a weak landing page will cap what any amount of account optimisation can achieve. The audit should check whether landing pages are relevant to the ad and keyword, whether they load quickly on mobile, whether the conversion action is clear, and whether there’s any meaningful testing happening. What makes a PPC landing page work is well-documented, and most accounts aren’t applying even the basics consistently.

Quality Score

Quality Score is Google’s assessment of the relevance and quality of your keywords, ads, and landing pages. A low Quality Score means you’re paying more per click than a competitor with a better-structured, more relevant account. The audit should identify keywords with low Quality Scores, diagnose the likely cause (ad relevance, expected CTR, or landing page experience), and prioritise the fixes that will have the most commercial impact.

Bidding and Budget Allocation

Bid strategies have become increasingly automated, which creates its own audit challenges. Automated bidding works well when it has enough conversion data to learn from. It works poorly when it’s applied to campaigns that don’t have sufficient volume, or when the conversion actions it’s optimising toward don’t accurately represent business value. The audit should check whether the chosen bid strategies are appropriate for the data available, and whether budget is allocated in proportion to commercial opportunity rather than historical inertia.

Audience Targeting and Segmentation

Most PPC audits spend too much time on keywords and not enough on audiences. The audit should review what audience segments are in use, whether bid adjustments reflect actual performance differences across audiences, and whether remarketing lists are being used effectively. For accounts running on platforms beyond Google, the audience layer becomes even more important. TikTok Ads, for instance, are almost entirely audience-driven, and the audit logic there is quite different from a keyword-first platform like Google Search.

The Difference Between an Audit and a Review

A lot of what gets called a PPC audit is actually a performance review. The two are not the same thing.

A performance review looks at what happened: clicks, impressions, conversions, cost per acquisition, return on ad spend. It’s backward-looking and descriptive. It tells you how the account performed over a given period.

An audit is diagnostic. It looks at how the account is structured and managed, and it asks whether that structure and management is capable of producing better results. An account can have acceptable performance numbers while still being fundamentally broken in ways that will catch up with it. The audit finds those problems before they surface in the numbers.

When I was at lastminute.com, I saw how quickly a well-targeted paid search campaign could generate revenue. We launched a campaign for a music festival and saw six figures of revenue within roughly a day from a campaign that was, by most standards, relatively simple. The targeting was right, the timing was right, and the landing page did what it needed to do. But that kind of result is only possible when the fundamentals are in place. An audit is how you verify the fundamentals, not after something goes wrong, but before you scale.

How Often Should You Run a PPC Audit?

There’s no single right answer, but a full structural audit at least twice a year is a reasonable baseline for most accounts. Accounts with higher spend, more complex structures, or frequent campaign additions should be audited more regularly.

There are also specific triggers that should prompt an audit regardless of schedule: a sudden drop in conversion rate, a significant change in cost per acquisition, a new competitor entering the market aggressively, a change in the business model or product offering, or a transition between agencies or account managers. Any of these can create structural drift that won’t be visible in a routine performance review.

If you’re working with a PPC agency, a regular audit cadence should be written into the engagement. Agencies that resist auditing their own accounts are agencies that have something to hide, or at minimum, agencies that aren’t confident in what they’d find.

Who Should Conduct the Audit

There are three realistic options: an internal team member, the current agency, or an independent third party.

Internal audits are valuable for ongoing hygiene but tend to have blind spots. The person who built the account is not always the best person to critique it. There’s a natural tendency to defend past decisions rather than interrogate them.

Agency self-audits are useful but structurally compromised. An agency auditing its own work is unlikely to be fully candid about where it has underdelivered. That’s not a character flaw, it’s an incentive problem. Some agencies do this well and with genuine transparency. Most don’t.

An independent audit, conducted by someone with no stake in the current account performance, is the most commercially honest option. If you’re considering PPC management services from a new provider, asking them to audit the existing account before you commit is a reasonable way to assess both the account quality and the quality of their thinking.

What Good PPC Audit Output Looks Like

A good audit produces a prioritised action list, not a slide deck full of observations. The distinction matters. An observation without a recommendation and a priority level is just noise dressed up as analysis.

The output should tell you what the issue is, why it matters commercially, what the fix is, and roughly how long the fix should take. Issues should be ranked by likely impact, not by how easy they are to explain or how good they make the auditor look.

One thing I’ve seen repeatedly in agency pitches is the use of audit findings as theatre. The new agency comes in with a long list of things the previous agency got wrong, presented in a way that’s designed to impress rather than inform. The issues are real, but the framing is performative. A good audit is clinical, not dramatic. The goal is to fix the account, not to win a presentation.

This connects to a broader point about innovation in marketing. Clients often ask for innovation without defining what problem they want it to solve. Audits can fall into the same trap, where the auditor focuses on sophisticated-sounding issues like audience segmentation strategy or attribution modelling while the account is haemorrhaging budget on irrelevant search terms. Fix the basics first. The sophisticated problems can wait.

The Relationship Between PPC and SEO in an Audit

A PPC audit conducted in isolation misses an important dimension. Paid and organic search don’t operate independently, and the audit is a useful moment to look at where they overlap and where they should be coordinated.

If you’re paying for clicks on terms where you already rank organically in position one or two, that’s a question worth asking. Not always the wrong decision, but one that should be made deliberately rather than by default. The relationship between SEO and PPC is worth understanding properly, because the two channels can amplify each other when coordinated, and cannibilise budget when they’re not.

Equally, comparing PPC and SEO performance on the same terms can reveal useful things about intent and conversion behaviour that neither channel’s data shows on its own.

A Note on Platform-Specific Audits

Most of what’s described above applies primarily to Google Search, which remains the dominant PPC channel for most advertisers. But the audit logic extends to other platforms, with adjustments for how each one works.

If you’re running Google Display or YouTube campaigns, the audit needs to include placement exclusions, which are frequently neglected and which can result in significant wasted spend on low-quality inventory. Understanding the basics of how Google Ads works at a structural level is necessary context before you can audit it meaningfully.

For verticals with specific cost dynamics, like beauty, hospitality, or local services, the audit needs to account for industry-specific benchmarks. Google Ads for beauty salons, for example, has a different set of structural considerations than a B2B software account, and the audit framework needs to reflect that.

And on the cost side, understanding Google advertising fees and how auction dynamics affect your actual spend is part of what a good audit should contextualise, particularly if the account has been running on automated bidding without a clear sense of what it’s actually paying per click in competitive auctions.

Common Mistakes in PPC Audits

The most common mistake is auditing the account rather than auditing the strategy. An account can be technically well-structured and still be pointed at the wrong objective. I’ve seen accounts where the campaign architecture was genuinely impressive, the negative keyword lists were thorough, the ad copy was tested, and the conversion tracking was clean. And the business was still losing money on paid search because the campaigns were optimised for lead volume rather than lead quality, and nobody had connected the PPC data to what was actually happening in the sales pipeline.

The audit should always start with the business objective and work backward to the account. Not the other way around.

A second common mistake is treating the audit as a one-time exercise. Accounts drift. The audit findings that were accurate in January may be partially obsolete by June if the account has been actively managed in between. Build a rhythm of lighter ongoing reviews between full audits, so that structural drift gets caught before it compounds.

A third mistake is over-indexing on click-through rate as a quality signal. Improving CTR matters, but a high CTR on the wrong query is not a win. The audit should always connect CTR improvements back to conversion data, not treat them as an end in themselves.

There’s also a broader point worth making about conversion rate differences between paid and organic traffic. Paid search visitors often convert differently from organic visitors, and an audit that doesn’t account for that distinction can draw misleading conclusions about what’s working.

How to Prioritise What You Find

Every audit produces more findings than any team can action at once. Prioritisation is where the commercial judgement comes in, and it’s where a lot of audits fall short.

A simple framework: rank each finding by estimated financial impact and by effort to fix. High impact, low effort fixes go first. These are usually things like adding obvious negative keywords, fixing broken conversion tracking, and pausing clearly underperforming keywords that have spent significantly without converting.

High impact, high effort fixes come next. These might include restructuring campaigns, rebuilding landing pages, or overhauling bid strategies. They take longer but they move the account to a structurally better place.

Low impact fixes, regardless of effort, go to the bottom of the list or get dropped entirely. An audit that produces 40 action items of equal weight is not useful. The value is in the ranking, not the length of the list.

For teams managing paid media alongside a broader channel mix, the full context around paid advertising strategy is worth reviewing. The Paid Advertising Master Hub covers how PPC sits within a broader acquisition framework, which is useful context when you’re deciding how much of your audit output to action versus how much to deprioritise in favour of other channels.

About the Author

Keith Lacy is a marketing strategist and former agency CEO with 20+ years of experience across agency leadership, performance marketing, and commercial strategy. He writes The Marketing Juice to cut through the noise and share what works.

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