Calculate conversion credit using last-click attribution. 100% credit goes to the final touchpoint before conversion for accurate bottom-funnel analysis.
Last-click attribution assigns 100% of the conversion credit to the final marketing touchpoint before a customer converts. This is the default model in many analytics platforms, including Google Analytics, making it the most widely used attribution method in digital marketing.
If a customer sees a display ad, clicks an email link, and then converts via a branded search click, the branded search receives all the credit. This model excels at identifying which channels are most effective at closing conversions and driving immediate action.
However, last-click attribution systematically undervalues awareness and consideration channels. Channels like display, social media, and content marketing that introduce customers to your brand rarely get the last click but are essential to filling the funnel. Use this calculator to quantify your channel performance under last-click and compare it to other models.
Quantifying this parameter enables systematic comparison across campaigns, channels, and time periods, revealing opportunities for optimization that drive sustainable business growth.
Last-click attribution is the industry default and the starting point for most marketing measurement. Understanding how it distributes credit helps you identify closing channels and recognize its blind spots for top-of-funnel activities. Data-driven tracking enables proactive campaign management, allowing teams to scale successful tactics and cut underperforming initiatives before budgets are depleted unnecessarily.
Last Touchpoint Credit = Conversion Value × 100% All Other Touchpoints Credit = $0 Channel Last-Click Value = Σ Conversion Values where channel was last click
Result: Channel Revenue (Last-Click): $6,750
With 100 conversions at $150 each and 45 having this channel as the last click, the channel is credited with 45 × $150 = $6,750 under last-click attribution. That's 45% of total conversion value.
Last-click attribution is the simplest conversion-focused model. It identifies the final marketing interaction before conversion and assigns all credit to that touchpoint. Every prior interaction in the customer journey receives zero credit, regardless of its role in building awareness or nurturing interest.
Relying solely on last-click creates a dangerous feedback loop. Channels that close conversions get more budget, while awareness channels get cut. But without awareness channels feeding the funnel, eventually the closing channels have fewer prospects to convert, and overall performance declines.
Last-click works well for specific use cases: low-consideration purchases with short paths to conversion, certain e-commerce categories, and bottom-funnel optimization within a broader attribution framework. For simple products with 1–2 touch journeys, it may be accurate enough.
Last-click attribution gives 100% of conversion credit to the final marketing touchpoint before a conversion. It's the most common attribution model and the default in most analytics platforms. It measures which channels are best at closing conversions.
Last-click became the default because it's simple to implement, easy to understand, and was technically easier to track in early web analytics. It requires only knowing which channel drove the converting visit, without tracking the full customer journey.
Last-click ignores all touchpoints before the final one. This undervalues awareness channels (display, social, content) and overvalues closing channels (branded search, retargeting, email). It can lead to cutting top-of-funnel budgets that actually drive pipeline.
Branded search, direct traffic, retargeting ads, and email marketing typically receive the most last-click credit because customers often use these channels when they're ready to convert. This doesn't mean these channels created the demand.
Don't abandon it entirely, but don't rely on it exclusively. Use last-click as one data point alongside first-click and multi-touch models. Many organizations transition to data-driven attribution for primary reporting while keeping last-click as a reference.
Exclusive reliance on last-click often leads to over-investing in bottom-funnel channels (retargeting, branded search) and under-investing in awareness channels. Over time, this can shrink your funnel as fewer new prospects are introduced to your brand.