A complete step-by-step guide to auditing your e-commerce PPC campaigns covering conversion tracking verification, account structure analysis, search term waste, audience setup, feed quality, and ROAS improvement opportunities.
By Musab Ahmad · 2025-02-17
High-spend accounts ($20,000+/month) should be audited monthly. Mid-spend accounts ($5,000–$20,000/month) quarterly. Lower-spend accounts every 6 months. In addition to scheduled audits, perform emergency audits any time you see sudden ROAS drops, significant traffic spikes, or conversion rate changes.
Misconfigured conversion tracking is consistently the most costly error it can cause the algorithm to optimize toward invalid signals for months. After that, unmanaged search terms (broad match queries with no negative keywords) and mis-sized audiences (showing prospecting ads to existing customers) represent the largest typical waste sources.
Self-audits using the steps in this guide cover the most common issues. However, experienced PPC auditors often identify subtle structural problems, bidding inefficiencies, and cross-campaign conflicts that internal teams miss. The ROI on a professional audit is typically 5-10x the audit cost through identified savings within 90 days.