Position Based Attribution
The Complete U-Shaped Model Guide
🎯 The Marketing Budget Killers Nobody Sees Coming
I worked with a direct-to-consumer brand that was about to make a devastating decision. Their data showed “social media drives zero conversions” and “search drives everything.” They were ready to cut social media entirely.
But something didn’t add up. Their social following was massive, engagement was off the charts, and their competitor wasn’t investing in search—they were winning on brand.
I asked them to trace every customer’s journey backward. 83% had visited from social FIRST. They just didn’t convert there. Social started the conversation. Search closed it. And their last-click model was about to kill the channel that made the sale possible.
The fix was position based attribution—the model that recognizes both beginnings and endings matter. Let me show you why this model changed how I think about marketing credit forever.
What is Position Based Attribution?
Position based attribution (also called U-shaped attribution) gives 40% credit to the first touchpoint, 40% to the last touchpoint, and splits the remaining 20% among all middle touchpoints.
This model is based on a powerful marketing truth: the first interaction creates awareness and sets the frame. The last interaction seals the deal. Everything in between nurtures—but those two moments are the critical ones.
Position based is the most popular multi-touch model for a reason. It balances the intuitive importance of first and last touchpoints while acknowledging the middle journey exists.
How Position Based Attribution Works
Take this 5-touchpoint customer journey:
- Day 1: Discovers brand via Instagram ad (first touch)
- Day 10: Reads blog post
- Day 20: Sees retargeting ad
- Day 25: Opens email
- Day 28: Searches Google and converts (last touch)
With position based attribution:
- Instagram (first): 40% credit
- Blog + retargeting + email (middle): 20% total (6.67% each)
- Google search (last): 40% credit
Why Position Based Attribution Works
Here’s why position based is my personal favorite for most scenarios:
1. It aligns with purchase psychology
Customers remember how they found you and how they bought. They often forget the middle. Position based mirrors this reality.
2. It validates awareness channels
Display, social, and video advertising finally get credit they deserve. No more killing brand budgets because last-click shows “zero ROI.”
3. It still rewards conversion optimization
The last touchpoint gets 40%—not ignored. This keeps your team focused on closing optimization (email sequences, retargeting, landing pages).
đź’ˇ Pro Tip
You can customize the 40/40/20 split. Some companies use 30/30/40 for channel-heavy journeys. Others go 50/30/20 when first-touch is everything. Start with standard 40/40/20, then customize based on your data.
⚠️ Common Mistakes
Mistake #1: Not adjusting for sales cycle length
For 18-month enterprise sales, the “middle” is huge. Standard 40/40/20 might undervalue content that nurtures for months. Consider 30/50/20 (more last) or custom rules for your industry.
Mistake #2: Forgetting about view-throughs
If you’re not tracking views that lead to later clicks, your first touch credits are wrong. Implement proper view-through windows in your ad platforms.
Position Based vs. Other Models
| Model | Best For | Credit Split |
|---|---|---|
| Position Based | Brand + DR mix | 40% first, 40% last, 20% middle |
| Linear | Equal journey | Equal (1/N) |
| Time Decay | Short cycles | Increases to recent |
| Data Driven | Large data | Algorithmic |
Implementation Steps
1. Document your journey stages
Map how customers find you vs. convert.
2. Configure in analytics
GA4: Admin > Attribution > Select “Position based”
3. Align platforms
Consistent 28-day click + 7-day view across all channels.
4. Report and iterate
Monthly reviews with stakeholders.
FAQ
Q: Is position based better than linear?
A: For most businesses, yes. Linear treats a blog post read on day 1 the same as the converting click on day 90. Position based makes more intuitive sense.
Q: Can I customize the percentages?
A: Yes. Some tools allow full customization. 30/30/40 or 50/30/20 are common alternatives.
Q: Does it work for B2B?
A: Excellent for B2B. Whitepapers and webinars get first-touch credit. Sales conversations get last-touch. Middle nurture gets partial credit.
âś… Checklist
- Map customer journey stages
- Configure position based in GA4
- Align platform attribution windows
- Implement view-through tracking
- Document and share with team
- Create monthly reporting cadence
Ready for Position Based?
Start with the standard 40/40/20 model. Review monthly. Adjust split based on your unique customer journey data.
