Position-Based Attribution

MTA model weighting first and last touchpoints heavier than middle (also U-shape attribution). A working definition from the RGM marketing glossary.

Schematic — Position-Based Attribution

MTA model weighting first and last touchpoints heavier than middle (also U-shape attribution).

Term: Position-Based Attribution
Field: Attribution
Category: Attribution

What the term covers

Worth a slow read.Position-Based Attribution is a conversion-crediting method. Fix what it covers before the team debates tactics, and the rest of the conversation gets easier.

MTA model weighting first and last touchpoints heavier than middle (also U-shape attribution).

Attribution assigns credit for outcomes to touchpoints along the customer journey. No attribution model is fully accurate — each has trade-offs between simplicity, accuracy, and bias toward certain channels.

Position-Based Attribution sits in Attribution; it is a conversion-crediting method. Define it once and the reporting holds together.

How it works

Read that twice.There is no single setting for Position-Based Attribution. It bends to the audience, the channels, and the wider plan.

Position-Based Attribution is not a switch you flip. It names a moving idea, and the way it plays out shifts with the setup. A lean team running one paid channel applies Position-Based Attribution differently than a brand running ten. Use Position-Based Attribution loosely and teams pull apart; pin it down and the math lines up.

Keep the order simple: define Position-Based Attribution for your context, then decide how to act. Reverse it and the budget chases a number nobody agreed on. Here is the short version.

When to reach for it

Here is the short version.Use Position-Based Attribution when it changes a choice. If it is not driving a decision, it is vocabulary, not leverage.

Bring Position-Based Attribution in when a live choice hangs on it. In attribution work, that usually means one of three moments. Away from a decision, Position-Based Attribution is background, not a lever.

Setting budget. Position-Based Attribution guides the team toward the better-paying line.
Choosing a metric. Position-Based Attribution flags whether the number you report is causal.
Comparing options. Position-Based Attribution normalizes a side-by-side that hides real gaps.

An example with real numbers

Start here.To make Position-Based Attribution concrete, the case below uses Casper and figures from public reporting plus RGM analysis.

Look at Casper. In a last-click audit, Position-Based Attribution drove the decision rather than sitting in a footnote. A baseline came first, then a single agreed meaning of Position-Based Attribution, then the read: 35% of credited sales proved non-incremental.

Worked example for Position-Based Attribution -- illustrative figures, RGM analysis
Stage	Action	Why it mattered
Baseline	Took a before reading on Position-Based Attribution.	A fixed point of truth.
Define	Locked the scope of Position-Based Attribution so it stayed stable.	A shared definition up front.
Act	A last-click audit — one variable.	Cause and effect, isolated.
Result	35% of credited sales proved non-incremental	A decision the data earned.

Figures for Position-Based Attribution here are illustrative and marked RGM analysis. Copy the method, not the exact numbers.

Failure modes to watch

Hold that thought.Teams slip on Position-Based Attribution in four familiar ways. Each makes a soft assumption look like a precise number.

One blanket rule. Applying Position-Based Attribution the same way everywhere. Split it by audience, channel, and business model.
No context. Reporting Position-Based Attribution with no baseline. A bare number cannot be judged.
Chasing the word. Optimizing Position-Based Attribution for its own sake. Check it tracks a real outcome.
Raw benchmarks. Stacking Position-Based Attribution against rivals blind. Normalize for margin, pricing, and sales cycle.

Questions teams ask

What is Position-Based Attribution?

MTA model weighting first and last touchpoints heavier than middle (also U-shape attribution). In short, fix that meaning before any tactic is debated.

Why does Position-Based Attribution matter?

Position-Based Attribution shows up in budget reviews and channel reporting. Use it loosely and teams pull apart; use it precisely and the numbers line up.

How do teams use Position-Based Attribution?

Teams put Position-Based Attribution to work on a spend split, a metric, or a head-to-head call. See the Casper walk-through above.

Where do teams slip up on Position-Based Attribution?

Treating Position-Based Attribution as one blanket rule and reporting it with no baseline. Both hide a soft assumption.

Where can I go deeper on Position-Based Attribution?

Start with the related terms below, then read the guide on incrementality testing, plus marketing mix modeling.

What is Position-Based Attribution?: MTA model weighting first and last touchpoints heavier than middle (also U-shape attribution). In short, fix that meaning before any tactic is debated.
Why does Position-Based Attribution matter?: Position-Based Attribution shows up in budget reviews and channel reporting. Use it loosely and teams pull apart; use it precisely and the numbers line up.
How do teams use Position-Based Attribution?: Teams put Position-Based Attribution to work on a spend split, a metric, or a head-to-head call. See the Casper walk-through above.