Incrementality in affiliate marketing.
Stop paying full commission on sales the customer was already going to make. A tight, tactical field guide by industry veteran Lisa Picarille — the tests, the frameworks, and the commission changes that follow.
24 pages
Tight, tactical field guide
~30 min read
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Written by Lisa Picarille — longtime affiliate industry journalist, editor, and analyst — for the team behind MYAP.
What's inside
Six sections. No fluff.
A structured walkthrough from "what is it" to "here's what to change in your program on Monday."
01
What incrementality actually means
The plain-English definition, worked through with a coupon-code example most programs recognize instantly.
02
Why it matters to your P&L
Overpayment, budget misallocation, and ROI distortion — the five ways non-incremental commissions quietly erode program profit.
03
Affiliate types by incrementality level
Who creates demand vs. who captures it. Content, influencers, review, coupon, loyalty, cashback — ranked honestly.
04
Attribution & click-analysis techniques
Practical tests: pause-and-measure, geo holdouts, click-attribution analysis, and channel-overlap studies.
05
Time-to-conversion & basket-size analysis
Two of the fastest tests to run — the signals that separate influencers from interceptors in your existing data.
06
Turning insights into action
Rewriting commission tiers, shifting budget to high-incrementality partners, and moving off last-click.
Who it's for
Anyone accountable for what the affiliate channel actually contributes.
Affiliate program managers
You suspect a chunk of your commissions are going to sales you'd have made anyway. This tells you how to prove it and what to do about it.
Finance & analytics owners
You need a defensible way to measure the affiliate channel's real contribution — beyond last-click reports the network hands you.
Performance marketing leads
You're allocating budget across paid, affiliate, and organic. Incrementality is the only way to compare them honestly.
About the author
Lisa Picarille
Lisa Picarille is one of the most recognized voices in performance and affiliate marketing. Over more than two decades she has served as editor of Revenue Magazine, editorial director at leading affiliate industry publications, and a longtime commentator, moderator, and analyst covering the space. She writes with the perspective of someone who has watched the channel mature from cookie-based last-click into the multi-touch, incrementality-aware discipline it's becoming — and she has zero patience for vendor hype.
This field guide distills the frameworks she uses when advising programs on where their commission dollars are actually going.
FAQ
Common questions
More free reading from MYAP
The 72-page complete beginner's guide covers the whole affiliate landscape end-to-end.
Want to run these tests on your program?
MYAP gives you the attribution controls, commission engine, and reporting to actually act on what incrementality testing reveals.