Use case · C94
Calculate the cost of marketing inaction
How much does postponing an action really cost when losses accumulate over time?
Direct answer
The cost of inaction adds lost margin, avoidable cost to serve, the value of lost customers and a shrinking learning window.
01Act now, fund a pilot, wait for evidence or explicitly accept the loss.
02The rule, the evidence and the next review date stay visible.
How to use this
Move from the question to the deliverable.
How much does postponing an action really cost when losses accumulate over time?
Act now, fund a pilot, wait for evidence or explicitly accept the loss.
Six-month costed inaction case
Worked example · SQ-94
Compare €95k of action with €377k of avoidable loss
Postponing a decision seems free when no invoice is committed. The cost nevertheless appears in customers lost, margin that cannot be recovered and learning delayed.
Fictitious case: a B2B service with 4,000 customers, €120 of average monthly revenue and 0.25 points of avoidable monthly churn.
- 01Define the loss
Isolate the share of the result that action could genuinely avoid.
- 02Value
Calculate the future margin of the customers lost and the additional variable costs.
- 03Spread over time
Accumulate the loss month by month, allowing for its irreversibility.
- 04Compare
Set the cost of action against the recoverable value and the value of further evidence.
Six months of waiting destroy four times the cost of action
The programme costs €95k. After six months, the avoidable losses reach €377k, even without attributing all retention to marketing.
Cost of inaction = lifetime margin of avoidable lost customers + avoidable service + value of delayed learning| Horizon | Avoidable customers lost | Lifetime margin lost | Avoidable service | Learning delay | Cumulative cost |
|---|---|---|---|---|---|
| 1 month | 10 | €45k | €4k | €8k | €57k |
| 2 months | 20 | €90k | €8k | €16k | €114k |
| 3 months | 30 | €135k | €12k | €24k | €171k |
| 4 months | 40 | €180k | €16k | €32k | €228k |
| 5 months | 50 | €225k | €20k | €40k | €285k |
| 6 months | 60 | €270k | €27k | €80k | €377k |
01The break-even point is crossed between the first and the second month of inaction.
02A €28k pilot started immediately limits the commitment while preserving four months of learning.
03Even if only 40% of the margin and service loss is avoidable, waiting six months still costs about €199k, above the programme.
Fictitious case. Lifetime margin and the avoidable share of churn must be estimated by cohort and tested for sensitivity.
Coherence controls
Minimum conditions before validation.
The status, the evidence and the owner must be available for review.
The status, the evidence and the owner must be available for review.
The status, the evidence and the owner must be available for review.
The status, the evidence and the owner must be available for review.
Usable deliverable
Six-month costed inaction case
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