We've audited more Meta Ads accounts than we can count, and the same handful of budget-draining mistakes show up again and again — often on accounts that have been "professionally managed" for years.
1. Audience overlap across ad sets
Multiple ad sets competing for the same audience quietly inflates your costs through internal auction competition.
2. No creative rotation
Ad fatigue is real — the same three creatives running for months is one of the most common reasons cost-per-result climbs over time.
3. Broad campaign objectives mismatched to goals
Optimising for traffic when you actually want leads (or vice versa) trains the algorithm to find the wrong people.
4. Ignoring the frequency metric
Rising frequency with falling performance is usually the clearest early signal that an audience needs refreshing.
5. No dedicated landing page
Sending paid traffic to a generic homepage instead of a purpose-built landing page is one of the most common reasons cost-per-acquisition stays stubbornly high.
In summary
None of these fixes are exotic — they're just easy to miss when an account has run for years without a proper audit. That audit is usually where the first real efficiency gains come from.