MKTG90026 Chap.9 Promotion Lift and Profitability
Promotion Lift and Profitability
Promotion metrics separate the baseline expected without marketing from incremental sales created during an event. This chapter distinguishes promotional lift from lift factor, calculates depth, frequency, redemption and pass-through, and reconciles volume response with marginal profit.
The key economic correction is discount leakage on baseline units: an event can produce a large sales spike yet lose money after lower unit margin and direct cost.
What this chapter covers
- 01
Baseline and incremental sales
- 02
Promotional lift and lift factor
- 03
Marginal promotional profit
- 04
Depth, frequency and redemption
- 05
Promotion ROI
- 06
Pass-through and price waterfall
Worked example · free
Reconcile lift with promotion profit
- 1Incremental units are 600.
- 1Incremental gain is 600 multiplied by 5, or 3,000 dollars.
- 1Discount leakage is 1,000 multiplied by 3, or 3,000 dollars.
- 1Subtract 900 dollars of direct cost.
- 1Net promotional profit is negative 900 dollars.
Key terms
- Promotional Lift
- Incremental promotion sales divided by baseline sales.
- Lift Factor
- Total promotion sales divided by baseline sales.
- Pass-Through Rate
- Consumer discount value divided by the trade discount funded by the manufacturer.
Promotion Lift and Profitability FAQ
What is the difference between lift and lift factor?
Lift divides incremental sales by baseline, while lift factor divides total promotion sales by baseline. If total sales are 1.8 times baseline, lift factor is 1.8 and incremental lift is 80%, not 180%.
Why can a high sales lift lose money?
Incremental units earn the lower promotional margin, while baseline units also receive the discount and lose margin. Direct display, media or execution costs reduce the result again. Volume response must cover all three economic effects.
What should be reviewed after the promotion ends?
Check post-event sales for stockpiling or timing shifts, plus promotion depth, frequency, percentage sales on deal and pass-through. These measures reveal whether short-run lift came with reference-price damage or channel leakage.
Why can an event pass break-even but still be weak?
The event window may omit stockpiling, a later sales dip, reference-price erosion or poor repeat. Extend the counterfactual horizon and inspect full-price behaviour before treating positive event profit as durable promotion value.
Exam move
Always reconstruct total equals baseline plus incremental before selecting a formula. Calculate regular and promotional unit margins, then show incremental gain, baseline discount leakage and direct cost on separate lines. Practise a break-even incremental-volume target and review longer-run indicators so event volume is not mistaken for durable value.
Begin every promotion case with three boxes: baseline sales expected without the event, total sales observed during the event and incremental sales equal to their difference. Calculate lift as incremental over baseline and lift factor as total over baseline. Reconcile the identities before interpreting the percentages. If total is 1.8 times baseline, the lift factor is 1.8 while lift is 80 percent.
Keeping the counts visible prevents the common 180-percent distractor. Build a promotion profit bridge. First compute regular and promotional contribution per unit. Incremental units earn promotional contribution, baseline units suffer discount leakage because they would otherwise have sold at the regular margin, and display, media or execution costs must also be deducted. Show these effects on separate lines.
Predict whether a deeper discount raises required incremental volume before calculating. A strong sales spike is not sufficient when lower margins apply across the baseline. Derive a break-even target by setting incremental contribution against baseline leakage and direct cost. Round required units upward and check whether inventory and distribution could support them.
Add retailer pass-through where relevant: manufacturer funding does not guarantee that shoppers receive the intended price reduction. Compare planned discount, shelf-price change and channel retention so weak response is not automatically attributed to consumers. After the event, extend the time window. Review stockpiling, purchase timing, post-promotion dips, repeat purchase, category expansion and competitor switching.
Promotion frequency and percentage of sales on deal can reveal dependence on discounts or reference-price erosion. Redemption rates need an eligible-offer base, and a high rate may describe targeting as much as persuasion. State which counterfactual produced the baseline and how uncertainty in it affects incremental claims. For exam practice, write baseline, incremental, lift, margin bridge and longer-run check in order.
Keep percentage depth separate from dollar discount and distinguish manufacturer funding from consumer pass-through. Maintain an error log for total used as incremental, lift confused with lift factor, baseline leakage omitted and revenue mistaken for profit. Finish with a recommendation that names the economic threshold and one post-event measure, rather than declaring the promotion successful from volume alone.
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