KPI Tree

Google Analytics Metric

Web Analytics

User Acquisition Cost = Total Marketing Spend / New Users Acquired

User acquisition cost measures the average cost to acquire a new user to your website by combining Google Analytics traffic data with marketing spend data. It calculates the cost per new visitor or per converting user across channels to evaluate acquisition efficiency.

Google AnalyticsWeb Analytics

User Acquisition Cost

User acquisition cost measures the average cost to acquire a new user to your website by combining Google Analytics traffic data with marketing spend data. It calculates the cost per new visitor or per converting user across channels to evaluate acquisition efficiency.

How to calculate user acquisition cost

User Acquisition Cost = Total Marketing Spend / New Users Acquired

Why user acquisition cost matters for Google Analytics users

Knowing how much traffic you get is useful. Knowing how much you pay for each visitor is essential. User acquisition cost varies dramatically by channel, campaign, and audience - and understanding these differences determines how you allocate your marketing budget.

Mapping acquisition cost into your metric tree alongside conversion and revenue metrics reveals the true cost of each customer. Channels that appear expensive on a cost-per-visitor basis may be cheap on a cost-per-conversion basis, and vice versa.

Understand and act on user acquisition cost with KPI Tree

KPI Tree connects GA4 user data with marketing spend from your warehouse. Define acquisition cost metrics per channel and campaign and position them in your marketing efficiency tree.

Assign RACI ownership to your marketing director. Set alerts when acquisition costs exceed target thresholds and track optimisation actions aimed at improving cost efficiency per channel.

Get started with your Google Analytics data

Query using MCP
MCP

Pull metrics from Google Analytics directly through the Model Context Protocol.

Data Warehouse
SnowflakeBigQueryDatabricksRedshift

Connect your existing warehouse where Google Analytics data already lands.

Professional Services
FivetranSnowflakedbt

Our professional services team can build you turn-key AI foundations in a matter of weeks. Data warehouse on Snowflake/BigQuery, ELT with Fivetran, all modelled in dbt with a semantic layer.

Related Google Analytics metrics

Campaign Performance ROI

Web Analytics

Metric Definition

Campaign ROI = ((Campaign Revenue - Campaign Cost) / Campaign Cost) x 100

Campaign performance ROI measures the return on investment for marketing campaigns tracked in Google Analytics by comparing attributed revenue or conversion value against campaign costs. It evaluates the financial effectiveness of campaigns across all channels - paid, email, social, and referral.

View metric

Conversion Rate

Web Analytics

Metric Definition

Conversion Rate = (Conversions / Sessions) x 100

Conversion rate measures the percentage of Google Analytics sessions or users that complete a defined conversion event - such as a purchase, signup, form submission, or key feature interaction. It quantifies how effectively your website turns visitors into customers or leads.

View metric

Traffic Source Analysis

Web Analytics

Metric Definition

Traffic source analysis examines how different acquisition channels - organic search, paid search, direct, referral, social, and email - contribute to sessions, engagement, and conversions in Google Analytics. It evaluates channel quality beyond volume by connecting source-level metrics to downstream outcomes.

View metric

Attribution Modelling

Web Analytics

Metric Definition

Attribution modelling assigns credit for conversions to the marketing channels and touchpoints that contributed to them within Google Analytics. It evaluates how different models - last-click, first-click, linear, time-decay, and data-driven - change the perceived value of each channel in your acquisition mix.

View metric

New User Rate

Web Analytics

Metric Definition

New User Rate = (New Users / Total Users) x 100

New user rate measures the percentage of Google Analytics users who are visiting your site for the first time within a given period. It indicates the balance between acquisition of new audiences and retention of existing ones, revealing the composition of your traffic.

View metric

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