What is Event Match Quality (EMQ)?
How should you read the score?
Read it per event, not as one number for the account. A purchase and an add-to-cart can score differently, and the purchase is the one that feeds most budget decisions.
Bands for a "good" score come from vendors, not from Meta. One tracking vendor's guide sets its own floor and target for the Purchase event and says itself that third-party benchmarks vary1. So we give no thresholds here.
What you can say safely is this. The score reflects how much matching information arrives with each event. More usable customer information generally means easier matching. The trend over time, and what changed to cause it, tell you more than one number.
What does it not tell you?
A high score can sit next to a broken setup. It does not show:
- whether the same purchase was counted twice. That is event deduplication: counting an event once when it arrives from both the Pixel and the Conversions API;
- whether you may send that customer information at all. Consent is a question your counsel decides;
- whether the sale was caused by the ad.
Our view: EMQ is a diagnostic, not a KPI. It helps you find a tracking fault. It is not a result you report to a board.
Easily confused with
Event Match Quality vs Conversions API (CAPI)
Meta's interface for sending events from an advertiser's server, platform, app or CRM to Meta. EMQ is a score on events. CAPI is one way to send them.
Event Match Quality vs Event deduplication
Counting once what arrives twice. Matching and counting are separate checks.
Event Match Quality vs Google Ads Quality Score
A different metric on a different platform. Same word "quality", no connection.
Buzzword alert
"Our EMQ is excellent now"
Usually means: the score went up after more customer information was sent. It says nothing about duplicates, consent or sales.
Ask: what else did you check besides the score?
"We improved match quality, so performance will follow"
Usually means: a general expectation, not a measured change in your account.
Ask: which number in our sales data should move because of it?
FAQ
What is a good Event Match Quality score?
There is no shared standard we can point to. Vendors publish their own floors and targets, and one vendor's guide notes that third-party benchmarks vary1. Ask for the trend per event and for what changed.
Does a high EMQ mean my tracking is accurate?
No. EMQ covers matching. Counting once, consent and attribution need their own checks.
Is EMQ the same as event deduplication?
No. EMQ asks whether Meta can recognise the customer. Deduplication asks whether the same event was counted twice.
Let’s find what’s actually working.
Next step. Tracking quality changes how much you can trust ROAS. Start from your own numbers with the Is your ROAS real? calculator.