Promotional Cadence
Date: 2026-08-16
How often you discount, and how predictably. Predictability is the expensive part — a customer who knows a sale is coming stops buying at full price, and that’s a permanent change you can’t undo with another sale.
What it is
Promotional cadence is the rhythm of discounting across a year: frequency, timing, depth and how visible the pattern is.
The trained-buyer problem
The mechanism, in sequence:
year 1 promotions at Easter, summer, Black Friday, January
year 2 customers notice the pattern
year 3 full-price demand collapses in the weeks BEFORE
each promotion, as people wait
year 4 promotions are now compulsory — removing one
doesn't restore full-price demand, it loses
the sale entirely
By year four the promotion isn’t generating demand, it’s servicing demand it created. And it can’t be withdrawn, because the full-price behaviour it replaced no longer exists.
The tell that you’re already there: sales dip in the fortnight before a known promotion. If they do, customers are waiting, and that pre-period dip is a cost the promotion’s own report will never show.
Measuring the real effect
Comparing promotional-period sales to a normal period vastly overstates the benefit. The honest comparison spans the whole cycle:
units contribution
2 weeks before 1,400 £21,000 ← suppressed by waiting
promotion week 3,200 £32,320 ← at 10% off
2 weeks after 1,300 £19,500 ← pulled-forward demand
───── ────────
5-week total 5,900 £72,820
normal 5 weeks 5,500 £82,500
───── ────────
promotion cost −£9,680
400 more units and £9,680 less contribution. The promotion looks like a success in isolation and loses money across the cycle.
Always measure a promotion across the full cycle — before, during and after — not just the promotional window. That single change reframes most promotional reporting.
Keeping cadence under control
- Vary the timing. Predictability is the enemy; an irregular calendar is worth more than a smaller discount on a regular one
- Vary the mechanic. Free delivery, a bundle, added value, member early access. Different levers don’t accumulate into one expectation — Discounting Strategy
- Narrow the audience. A promotion to lapsed customers has no cannibalisation; a site-wide one is mostly cannibalisation — Winback Campaigns
- Shorten them. A three-day promotion creates urgency; a two-week one becomes the price
- Count them. Most businesses discount far more often than anyone believes. Plot every promotion on one calendar and the picture is usually a surprise
The competitive trap
The common objection: “everyone in our category discounts, so we have to.”
Often true, and worth separating into two claims. Participating in category-wide events — Black Friday in most retail — is close to compulsory. Matching every competitor promotion is a choice, and it’s how a category races itself to zero margin.
The exit is usually differentiation rather than price: service, range, delivery, content. Slow, and it’s the only route that doesn’t end in permanent margin compression.
What to record
- Every promotion on one calendar with depth, audience and mechanic
- Full-cycle contribution, before-during-after, as the standing measure
- The pre-period dip as a trained-behaviour indicator, tracked over years
- Annotate them against every metric timeline, or the surrounding movements get attributed to something else — Annotation and Change Logs