Last-touch Attribution
Last-touch attribution is a model that gives 100% of conversion credit to the final marketing touchpoint a person interacted with before converting.
In depth
Under last-touch attribution, the tracking system looks back from the conversion event and assigns full credit to whatever channel, ad, or page came immediately before it. Because it ignores every earlier interaction, it is simple to implement and easy to explain to stakeholders, which is why many ad platforms report results this way by default. It rewards channels that close deals, such as branded search or a retargeting ad, and is most defensible for short, impulse-driven buying journeys.
The common pitfall is that last-touch systematically over-credits bottom-of-funnel channels and starves the awareness activities that actually started the journey, which can lead teams to defund top-of-funnel work that quietly drives pipeline. In a quiz-funnel and lead-qualification workflow, last-touch typically credits the quiz completion or the result page that captured the lead, so you should pair it with a richer model when deciding which upstream campaigns deserve more budget.
Example in practice
Frequently asked questions
When should I use last-touch attribution?
Use it for short, low-consideration purchases where the final touchpoint genuinely drives the decision. It is also a reasonable default when you lack the tracking infrastructure for multi-touch models, but treat its closing-channel bias with caution.
Why does last-touch over-credit branded search and retargeting?
These channels usually appear right before conversion because the buyer already decided elsewhere. Last-touch hands them all the credit even though awareness channels did the harder work of creating demand earlier in the journey.
How does last-touch differ from last-click attribution?
Last-click credits only the final click, while last-touch can credit the final interaction of any type, including a view-through impression. In ad-platform reporting the two are often used interchangeably, so always confirm the exact definition.