LexiconChannels
Promotion increment test
اختبار الأثر الإضافي للعرض
Definition
The promotion increment test is the Doctrine's rule for funding any promotion: incremental orders multiplied by contribution per order must exceed the promotion's cost across all promoted orders, including those that would have happened anyway. The test is set before the promotion runs, not written after the sales chart goes up.
In plain words
Did the offer bring enough new orders to cover the discount given to people who would have bought anyway?
Also searched as
- incremental contribution test
- promo test
- promotion ROI test
- discount test
- اختبار الأثر الإضافي للعرض
Formula
Fund if: Incremental orders × Contribution per order > Promotion cost across all promoted orders
Canonical thresholds
| Threshold | Verdict |
|---|---|
| Incremental orders × contribution per order > promotion cost across all promoted orders | Fund the promotion |
Source: Doctrine §7 · Rules
Example
Illustrative example · hypothetical figures
Illustrative arithmetic from Episode 2: if 100 discounted orders came in and 80 would have come anyway, the discount was paid on 100 orders to gain 20.
Where it is used
In the Doctrine and the Playbook
- Doctrine §7 · Rules
- Doctrine §3 · Why ad-hoc growth fails in Saudi multi-branch groups · Failure mode 6
- Playbook §2 · Gate 7: Channels and delivery economics at scale
In the Channel Ledger
- Ledger §5 · Promotions: the increment test · The rule
- Ledger §5 · Promotions: the increment test · Designing the holdout
In Beneath Marketing
Related terms
How to cite this definition
Alhajj, S. (2026). “Promotion increment test”. In The Revenue Engineering Lexicon, version 1.0. Riyadh. https://seiflden.com/lexicon/promotion-increment-test/