The product advertising glossary
What is MER?
Marketing efficiency ratio commonly means total business revenue divided by total marketing spend over the same period. Some teams use a narrower spend definition.
By Drizzle team
A practical example
$40,000 in revenue divided by $10,000 in defined marketing costs gives a 4× MER.
How to use it
State whether spend includes agencies, creative, software, and salaries. MER helps track overall efficiency but does not isolate the incremental effect of a particular campaign.
Put it in a creative brief
Write down the event, asset, or workflow you mean by MER before sharing a brief or report. For campaign measurements, keep the source and reporting window with the number. For creative work, attach an example so the team can assess the same thing.
Explore the creative testing guide, calculate campaign results with the ad metrics calculator, or return to the glossary.