Paid AdsBenchmark2026-03

March 2026 Meta Reality: Attribution Changes Made CPAs Appear 15–30% Higher Without Real Performance Decline

Zentric Digital / industry data

Results

2.79x

Avg ecommerce roas

15–30%

Apparent cpa increase

Key tactics

Distinguish real performance drops from attribution window changes
Recalibrate targets after Meta's January–March 2026 measurement updates
Use blended and incremental metrics alongside in-platform ROAS

Summary

Many advertisers saw CPA and ROAS worsen in March 2026. A significant portion of the change came from Meta's attribution updates (shorter windows, click definition changes) rather than actual campaign deterioration. Average ecommerce ROAS settled around 2.79x under the new rules.

#paid-ads #meta #attribution #benchmarks #2026-03

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