What's Reddit Ads' Default Attribution Window in 2026?

Reddit Ads' default attribution window in 2026 is 28 days for click-through conversions and 1 day for view-through conversions, according to Reddit's own Ads Help Center. That means a conversion is credited to a Reddit ad if it happens within 28 days of someone clicking the ad, or within 24 hours of someone seeing it without clicking.

The 28-Day Click Window

Twenty-eight days is a long click-through window compared to some other platforms' defaults, and it's a deliberate choice: Reddit's own research on B2B purchase behavior found that meaningful influence from an ad impression or click can show up weeks after the initial exposure, particularly for higher-consideration purchases discussed in community threads rather than clicked on immediately.

The 1-Day View-Through Window

View-through conversions — someone who saw an ad but didn't click, then converted anyway — only count if that conversion happens within 24 hours of the impression. This is a much tighter window than the click side, reflecting that an unclicked impression is weaker evidence of ad influence than an actual click, so Reddit's default reporting is conservative about crediting it further out.

How This Compares to Other Platforms

Reddit's 28-day click window sits on the longer end of the industry: Meta's current default is 7-day click plus 1-day view, while Snapchat defaults to a matching 28-day swipe-up window with a 1-day view-through window. The practical effect is that Reddit's reported conversion numbers can look stronger over time as more 28-day-old clicks roll in, so campaigns should be evaluated on a lag rather than judged on day-one numbers.

When to Customize the Window

Reddit lets advertisers shorten the click window or turn off view-through attribution entirely in Events Manager settings. Brands running short sales cycles or flash promotions often tighten this to 7-day click to avoid over-crediting Reddit for conversions that were really driven by a later touchpoint on another channel. B2B advertisers with longer consideration cycles typically keep the 28-day default, or in some cases extend it further using Reddit's own guidance that a 30-day window better captures full B2B purchase influence.

Why This Matters for Cross-Platform Reporting

Reddit itself acknowledges that its Ads Manager numbers won't match third-party analytics tools like GA4, and attribution window length is the biggest reason why. A 28-day click window will keep pulling in new conversions against ads that ran nearly a month ago, so a campaign's reported performance in Ads Manager can keep climbing well after the campaign itself has ended — pull final numbers only after the full window has elapsed, not the day spend stops.

Bottom Line

Don't compare Reddit's reported conversions directly against a platform using a 7-day click window without adjusting for the gap — pull your Reddit reporting through Events Manager, confirm which window is active on your pixel, and if you're benchmarking Reddit against Meta or Google side by side, match the windows first or the comparison isn't apples to apples.

Source: Reddit Ads Help Center, Web Attribution Overview.