ArmsLength AI
Most debates about PLIs miss the point entirely.
"We always use Operating Margin for distributors." "Berry Ratio is standard in our firm." "Our template says Net Cost Plus."
But PLI selection has never been about preference. The OECD doesn't prescribe a single preferred PLI - selection depends on which indicator provides the most reliable measure in your specific circumstances.
In practice, the decision comes down to one question:
What does this entity get paid for?
→ Sales execution? → Operating Margin → Cost efficiency? → Net Cost Plus → Capital deployment? → Return on Assets → Low-risk intermediation with value in OPEX? → Berry Ratio (maybe)
That "maybe" matters. Berry Ratio works only when COGS is pass-through and operating expenses capture the value-add. Yet it's heavily litigated in India, less commonly accepted in Germany, and requires careful documentation of OECD conditions.
Here's what most people overlook:
Your denominator definition often matters more than the PLI name.
Same company, same economics. Classify €40 differently between COGS and OPEX:
→ Berry Ratio moves from 1.25 to 1.375
That swing alone can push you from "in range" to "adjustment required."
If your PLI analysis "works" only under one convenient denominator mapping - expect audit scrutiny.
So document: 1. Why this PLI matches your tested party's value driver 2. What's included/excluded in your denominator (and why) 3. How you applied the same definitions to comparables 4. What happens if classifications shift
When did you last check whether your PLI actually matches the tested party's economics - rather than just what the template says? | 10 comments on LinkedIn