Attributing Meta ad spend to closed revenue in your CRM

Attribution is not one setting, it's a chain: the click carries identifiers, the form stores them, the CRM keeps them on the contact, the deal outcome writes back. A break anywhere means the report is guesswork.

Fire the pixel event in the browser and the same event from your server with an identical event ID. Meta deduplicates on that ID, so you get coverage from the server when the browser is blocked, without double-counting when it isn't.

Where opt-in is legally required, show the banner and load nothing until it's accepted. Where it isn't, don't throttle your own traffic with a banner you don't need.

Detect region server-side where you can, with a time-zone fallback for when that detection fails. A detection failure must fail to the correct default for your main market, not to blocking everything — an easy misconfiguration that silently kills tracking.

Capture the campaign parameters on landing, store them in the form submission, and write them to fields on the CRM contact. Fields, not tags — you want to report on them, not filter by them.

Do the same for instant-form leads from the ad platform itself, so both paths produce comparable records.

When a deal is won, you now have campaign, ad set and ad on the contact and a value on the opportunity. That's cost per client by campaign, which is the only acquisition number worth optimising against.

Expect it to change your decisions: the campaign with the cheapest leads is very often not the one producing clients.