Forgetting is the largest unbudgeted cost in corporate training.
Every training budget prices the delivery: content, platforms, hours off the floor. Almost none prices the decay that follows — though it consumes most of what was delivered. This page puts the missing line item on the table, with the research behind it and the mechanism that shrinks it.
You are already paying for forgetting — in the worst currency
The costs of decay never appear under “forgetting” in any ledger. They appear as annual refresher courses that repurchase last year’s knowledge; as errors and rework by people who were trained, once; as audit findings where the certificate was current and the knowledge wasn’t; as ramp time for veterans moved to new roles who relearn what colleagues forgot to retain. The line item is enormous precisely because it’s distributed.
The mechanism that shrinks it is unusually well-established: retrieval practice, spaced ahead of predicted decay. Applied per concept and per person by an engine — not by asking humans to be diligent — it converts the annual repurchase cycle into cheap maintenance. The calculator linked below puts your numbers through exactly this model.
The refresher-cycle tax
When knowledge decays freely, the only remedy is re-delivery — so organisations quietly buy the same training annually. Maintenance by retrieval costs a fraction and leaves retention higher between cycles.
The incident-shaped costs
Errors, escalations and findings cluster where knowledge faded fastest: rarely-used procedures, recently-changed rules, new joiners after week two. Decay isn’t uniform — and neither is its bill.
What recovery actually looks like
A retention engine doesn’t add training; it re-times it. The same content, scheduled against each person’s decay, holds at a fraction of re-delivery cost — with the curve on a dashboard as proof.
The invoice nobody itemises
Forgotten training priced per team per quarter — the leak this page names, shown the way finance will want it.
Interface shown as an illustration with representative numbers, not a screenshot — the layout is the product’s.
Put your numbers through the model.
The calculator takes four sliders and returns the line item your budget has been missing.
The evidence this page stands on
Questions buyers ask
Is the 50–80% range credible for workplace training?
The range comes from controlled studies of declarative material, and workplace conditions — infrequent use, no retrieval prompts — sit toward its unkind end. Material used daily on the job self-reinforces; the losses concentrate in everything else, which is most of the syllabus.
Doesn’t refresher training solve this already?
At the highest possible price: full re-delivery, annually, of material that decayed for eleven months first. Scheduled retrieval maintains the same knowledge continuously in minutes per week — and measures it, which refreshers never do.
How would we estimate our own forgetting rate?
Measure it: a pilot cohort’s delayed-retrieval data draws your organisation’s actual curve within weeks. Most teams find the guess they’d have made was optimistic.
Which knowledge is worth maintaining vs re-teaching?
Maintain what carries consequence when absent — compliance, safety, product, process. Re-teach what’s cheap and rarely needed. The platform’s risk-weighted scheduling encodes exactly this triage.
Where do I take this argument internally?
The calculator page produces the finance version; the pilot program page shows the low-risk way to test it on one cohort. Between them, the budget conversation changes shape.
See it on your own content.
Bring one course. We’ll show you the retention curve your current training leaves behind — and what scheduled review does to it.
- 30 minutes, on your calendar — pick a slot here
- Run on your own content wherever possible, not a canned deck
- You see the dashboards, the learner surface and the evidence exports
- No commitment — and pilot data stays yours either way