Paid Search Audit Checklist for Smarter Spend

Start with the business case, not campaign settings

Before assessing bids, keywords or ad copy, establish what the account is meant to achieve. A campaign optimised for online revenue should be evaluated differently from one generating high-value B2B enquiries. The audit needs a defined primary outcome, a realistic acceptable acquisition cost and a clear view of which conversions actually create value.

For eCommerce, calculate an allowable cost of acquisition from contribution margin rather than revenue alone. If a $200 order produces $70 in contribution margin, a $60 acquisition cost may be commercially sound; a $90 cost is not, even if return on ad spend appears respectable.

For lead generation, connect platform conversions to CRM stages. A cheap form submission is not a win if sales qualification rates are poor. Review cost per qualified lead, opportunity rate, close rate and expected customer value. Without this layer, Google Ads will optimise towards the easiest action, not necessarily the most profitable customer.

Paid search audit checklist: measurement first

Tracking problems contaminate every recommendation that follows. Check conversion measurement before making decisions based on cost per acquisition or return on ad spend.

Confirm primary and secondary conversions

Primary conversions should represent actions the account should actively optimise for, such as a completed purchase, qualified enquiry or booked consultation. Secondary conversions are useful observation points: phone clicks, brochure downloads, newsletter sign-ups and page views.

A common fault is treating every micro-conversion as primary. This inflates reported volume and can direct Smart Bidding towards low-intent actions. Check that only meaningful events are included in the account-level conversion goal, and that campaigns are using the right goal set.

Also check for duplicate tags. A purchase recorded by both a Google tag and an imported Analytics event can double count revenue. Compare Google Ads conversions with the order management system and analytics platform across the same date range. Small differences are normal because attribution models and reporting windows differ. Major gaps require investigation.

Test data quality and consent coverage

Use real test submissions and purchases where practical. Verify the conversion fires once, captures the correct value and currency, and is attributed to the intended campaign. For lead forms, inspect whether the thank-you page can be refreshed and counted repeatedly.

Consent settings matter, particularly where a business uses consent management platforms or has material traffic from privacy-conscious users. Google’s documentation explains that consent mode can model some unobserved conversions when configured correctly, but modelling cannot repair weak event design. Treat it as a measurement enhancement, not a substitute for accurate tagging.

Where sales take weeks or months, import offline conversion stages from the CRM. The strongest signal is usually a closed sale with revenue, but earlier qualified stages may be needed to give bidding systems enough volume. The trade-off is speed versus certainty: optimise too early and quality can drift; wait only for closed sales and data may be too sparse.

Check account structure against how people search

Campaign structure should make budget, targeting and reporting decisions easier. It should not exist because an old account convention says every keyword needs its own ad group.

Review whether campaigns separate meaningfully different business priorities: brand and non-brand demand, product categories with different margins, geographic markets, new customer acquisition and remarketing where applicable. Brand campaigns often deserve separate reporting because their conversion rate and cost can make aggregate account performance look better than non-brand acquisition really is.

Then assess keyword themes. Broad match can perform exceptionally well with clean conversion data, relevant creative and sensible guardrails. It can also expand into expensive, low-intent territory where the signal is weak. Exact and phrase match provide more control, but over-segmentation can starve campaigns of data and make management inefficient.

The right structure depends on conversion volume. A local service business generating 15 qualified leads a month needs consolidation. A national retailer with thousands of orders can justify more granular portfolio targets and category-level control.

Mine search terms for waste and opportunity

Search terms are where keyword strategy meets real customer language. Review them at least monthly, and more often during periods of rapid spend growth.

Look beyond obvious irrelevant clicks. Search terms can expose price-sensitive research, job seekers, DIY intent, competitor interest, geographic mismatches and requests for products the business does not sell. Add negative keywords when a term is clearly incompatible with the offer. Do not add negatives purely because a term has not converted after a handful of clicks. Low-volume, high-intent searches often need time.

Use the same report to find expansion opportunities. Repeated converting queries may justify dedicated ad copy, landing pages or a separate campaign where they have a distinct margin profile. This turns the audit from a cost-cutting exercise into a demand intelligence process.

Review negative keyword lists for conflicts too. An overzealous shared list can block valuable long-tail demand across the account. Every negative should have a documented commercial reason.

Review budgets, bids and auction pressure

Budget allocation should follow marginal return, not historical habit. Compare each campaign’s spend, conversion quality and incremental opportunity. A campaign limited by budget may deserve more investment, but only if it can maintain efficiency as it expands. Raising a budget does not create more qualified demand by itself.

For bidding, check that the strategy matches the account’s data maturity. Maximise Conversions can be sensible while an account builds volume. Target CPA works when conversion quality is stable, and the target reflects commercial reality. Target ROAS is best suited to reliable transaction values and enough conversion volume to avoid erratic decisions.

Inspect bid strategy learning status, target changes and conversion action changes. Frequent alterations make it difficult to distinguish a strategy issue from a measurement or demand issue. Google Ads recommends allowing Smart Bidding time to respond after material changes, although the appropriate period depends on traffic and conversion lag.

Auction insights can explain declining impression share, but do not treat competitor activity as a reason to chase position at any cost. Higher impression share is only valuable when it produces profitable incremental outcomes. If a competitor is willing to overpay, let them.