Quick answer: 7-day click attribution credits an ad when a user clicks it and converts within 7 days. TikTok sets this at the ad group level. Your window choice changes your reported conversions, your cost-per-acquisition, and how TikTok's algorithm learns.
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What Is 7-Day Click Attribution?
Attribution windows define what counts as a conversion. Get this wrong and every metric downstream is unreliable.
Definition and how it works
7-day click attribution tells TikTok Ads Manager to credit an ad when a user clicks it and completes the target action within 7 days of that click.
Per TikTok's Business Help Center. "If you have a click conversion window of 7 days, this means that a user has 7 days from the time of the click to complete the desired conversion action."
The clock starts the moment the click happens. Any conversion inside that 7-day window gets credited to that ad. The window then closes.
Why TikTok uses attribution windows
Without a window, a purchase made weeks after an ad click would still count. That inflates results and makes campaigns look more effective than they are.
Windows also create consistency. All advertisers measuring the same window can make fair comparisons. Reporting becomes reliable and repeatable.
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How 7-Day Click Attribution Differs from Other Attribution Models
The right model depends on your product's consideration time and the action you are optimizing toward.
1-day click attribution
1-day click credits only conversions that happen within 24 hours of a click. It captures fast, high-intent buyers. Impulse purchases, flash sales, and time-sensitive offers fit this window well.
The trade-off is fewer reported conversions. Products with longer research cycles will look like they perform worse than they actually do.
View-through attribution (VTA)
VTA credits a conversion even when the user never clicked your ad. They watched it, left, and later converted through another route.
Per TikTok's Business Help Center, the available VTA options are 1-day or off. VTA is most useful for brand awareness campaigns where direct clicks are low but ad exposure drives downstream purchases.
Engaged view-through attribution (EVTA)
EVTA sits between click and view. A user watches your ad for 6 or more seconds and then converts within 1 or 7 days. That counts as a credited conversion.
Six seconds signals real attention. EVTA captures intent from users who engaged meaningfully but did not click through.
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Why 7-Day Click Attribution Matters for Your TikTok Ads
Attribution is not just a reporting preference. It shapes bidding, optimization, and machine learning from day one.
Impact on conversion reporting
The window you choose changes your raw conversion count directly. A 7-day window captures more conversions than a 1-day window for the same campaign. Your reported cost per acquisition drops. Your ROAS rises.
Neither is dishonest. They measure different buyer behaviors. Know which one you are reporting before you make budget decisions.
Influence on campaign optimization
TikTok uses your reported conversions to decide which audiences to target next. More conversion signals give the algorithm more data to work with. A 7-day window passes TikTok's system more feedback than a 1-day window, especially for products with longer purchase cycles.
Role in machine learning
TikTok Ads Manager documentation notes that attribution data feeds the platform's optimization models directly. More conversion data means faster, more accurate delivery decisions.
This matters most when daily conversion volume is low. A 7-day window can help a campaign exit the learning phase faster, because the signal pool is larger.
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How to Set 7-Day Click Attribution in TikTok Ads Manager
Accessing attribution settings
Attribution lives at the ad group level, not the campaign level. Open TikTok Ads Manager and start a new campaign. When you reach the ad group setup, scroll to the Attribution section.
You need TikTok's Self-Attributing Network (SAN) active to adjust this setting directly in the platform.
Choosing your attribution window
Under Click-through Attribution (CTA), select 1 day or 7 day. For most conversion campaigns, 7-day is the recommended starting point and the TikTok default.
You can configure your other windows here too. VTA options are 1 day or off. EVTA options are 1 day or 7 day. Set all three to match your measurement strategy before launching.
Consistency with tracking partners
TikTok's attribution settings control what appears inside TikTok Ads Manager. They do not automatically sync to your Mobile Measurement Partner (MMP), whether that is Adjust, AppsFlyer, Branch, or another tool.
Match your MMP windows to your TikTok Ads Manager settings. Mismatched windows are one of the most common causes of conversion discrepancies between platforms. Per TikTok's policy guidance, aligning the two is the recommended practice.
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Common Attribution Questions
The most frequent questions about TikTok attribution windows are answered in the FAQ section below. Check those for guidance on double-counting, reporting gaps, and when to switch windows.
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Frequently Asked Questions
Can a single conversion be attributed to multiple TikTok ads at once?
No. TikTok attributes each conversion to one touchpoint only. If a user clicked two different ads within 7 days, the conversion goes to the most recent click. There is no double-counting across ads.
How does my attribution window affect reporting discrepancies with my MMP?
TikTok Ads Manager and your MMP (like AppsFlyer or Adjust) run separate attribution logic. If your TikTok window is set to 7-day but your MMP uses 1-day, the numbers will differ. Align both to the same window to minimize the gap.
When should I use 7-day click instead of 1-day click?
Use 7-day click when your product has a longer consideration period, your daily conversion volume is low, or you want to give TikTok's algorithm more data to optimize with. Use 1-day click for fast-purchase products, retargeting campaigns, or when you need a tight, conservative measurement baseline.
Does changing my attribution window affect live campaigns?
Attribution window changes apply to new ad groups going forward. Existing ad groups keep their original settings. Create a new ad group to test a different window without disrupting active delivery.