Measuring What Matters in Marketing
If you can't measure it, you can't improve it. Yet many businesses invest in marketing without clear systems for tracking return on investment.
The Basic Formula
Marketing ROI = (Revenue from Marketing - Marketing Cost) / Marketing Cost × 100
Simple in theory, but the challenge lies in accurate attribution — knowing which revenue came from which marketing activity.
Setting Up Tracking
1. Google Analytics 4
The foundation of marketing measurement:
- Track website traffic sources
- Set up conversion goals (form submissions, purchases, calls)
- Create UTM parameters for campaign tracking
- Monitor user behaviour and engagement
2. Call Tracking
If phone calls matter to your business:
- Use unique phone numbers for different channels
- Track call duration and outcomes
- Integrate with your CRM
3. CRM Integration
Connect your marketing data to your sales data:
- Track leads from source to sale
- Calculate true cost per acquisition
- Identify your most profitable channels
Channel-Specific Metrics
SEO
- Organic traffic growth
- Keyword rankings
- Organic conversion rate
- Cost per organic lead
Google Ads
- Cost per click (CPC)
- Conversion rate
- Cost per acquisition (CPA)
- Return on ad spend (ROAS)
Social Media
- Engagement rate
- Follower growth
- Website traffic from social
- Social conversion rate
Email Marketing
- Open rate
- Click-through rate
- Revenue per email
- List growth rate
Common Measurement Mistakes
- Vanity metrics — likes and followers don't pay bills
- Last-click attribution — ignoring the full customer journey
- Not setting baselines — you need a starting point to measure improvement
- Short-term thinking — some channels (like SEO) take months to show ROI
- Ignoring lifetime value — a customer's first purchase isn't their full value
Start Simple
You don't need complex tools to start measuring ROI. Begin with:
- Google Analytics conversion tracking
- Monthly reporting on key metrics
- A simple spreadsheet tracking spend vs results
Then build more sophisticated tracking as you grow.
Need help making sense of your marketing data? Our digital marketing team includes analytics setup and monthly reporting as standard. Get in touch to discuss your measurement challenges.