hi, i’m amr. when a GA4 report credits a channel for a lead, there’s a setting behind it that most teams never open: how far back GA4 looks for a touchpoint to credit. the defaults are shorter than a lot of B2B research cycles.
the two defaults in GA4
according to google’s own help documentation, the key event lookback window has two defaults. for acquisition key events (first_open and first_visit), the default is 30 days, and you can switch it to 7. for all other key events, the default is 90 days, and you can choose 30 or 60 instead. you set it in Admin, under Data display, in Events, then Attribution settings, and you need the Marketer role or above at the property level to change it.
what that means for a long B2B research phase
the lookback window is how far back GA4 looks from the key event for touchpoints that can receive credit. my reading, not google’s wording: if a buyer first finds you through a paid or organic visit, goes quiet for a long research phase and then fills in the form, a touchpoint older than the window is outside what GA4 can credit.
an illustrative case: a visitor reads your comparison post in June, comes back by direct in October and submits the demo form. that’s roughly 120 days. with the 90-day default, the June visit sits outside the window, so the report leans on whatever touch came later, and direct usually wins. this is an example, not a measured result from any account.
what to check this week
- open the Attribution settings and note the lookback window for acquisition and for other key events, so you know what your reports assume
- estimate your real gap between first visit and form submit, from the time-lag view in your own data, before deciding the default is wrong
- if the gap is often longer than 90 days, treat GA4 channel credit as a partial view, and compare it with the first-touch source recorded in HubSpot
- add a “how did you hear about us” field to your forms, since it captures the touch that the window can’t
the window only covers the time between a touchpoint and a key event recorded in GA4. what happens after the lead is captured, in demos and deals, lives in your CRM and isn’t affected by this setting.
where this stops applying
if most of your buyers go from first visit to form in a few weeks, the defaults are probably fine and there’s nothing to change. also, a longer window doesn’t create data that wasn’t collected. it only changes which recorded touchpoints can be credited, and cookie limits and consent choices still apply.
start scaling — if your channel reports and your CRM tell different stories about where leads come from, a one-hour attribution settings check usually explains the gap. let’s connect.
Sources: Google Analytics Help, “[GA4] Change attribution settings / key event lookback window” (support.google.com/analytics/answer/10597962). Figures are published product documentation, not verified results from Amr’s own client accounts.