Marketing & Paid Advertising

Last-Touch Attribution

Credits 100% of a conversion to the final marketing touchpoint before purchase.

1 min readLast updated Apr 2026

Credits 100% of a conversion to the final marketing touchpoint before purchase.

Why It Matters

Last-touch attribution is the default model for most ad platforms and reveals which channels are most effective at closing sales. Understanding last-touch performance is essential because it's how platforms like Google and Meta report and optimize campaigns.

Practical Example

Scenario

A customer sees a YouTube ad, browses your Instagram, and finally clicks a Google Shopping ad to purchase.

Result

Google Shopping receives 100% credit. However, this ignores that YouTube and Instagram warmed the customer up for conversion.

Pro Tips

  • 1Understand that all major ad platforms use last-touch by default—this is how they optimize and report
  • 2Use last-touch data to optimize bottom-of-funnel campaigns like branded search and retargeting
  • 3Compare last-touch ROAS to blended ROAS to see the full picture of channel contribution

Common Mistakes to Avoid

Over-investing in last-touch channels and starving top-of-funnel—eventually your retargeting pools dry up
Turning off channels that appear weak on last-touch without testing their incremental impact

Frequently Asked Questions

Related Terms

First-Touch Attribution

A single-touch attribution model that gives 100% credit to the first marketing touchpoint.

Multi-Touch Attribution
MTA

Distributes credit for conversions across multiple touchpoints in the customer journey.