One dataset. Three answers about where you make money.
Everything below is computed live from the embedded operational data of a fictional EUR 28M multi-specialty clinic group: care episodes, visits, exams, minutes and capacity. Change the filters above and every engine recalculates.
Margin cascade: revenue to EBIT (TDABC view)
The method-divergence problem
Monthly trend: revenue, TDABC profit and physician utilisation
Traditional vs ABC vs TDABC: who is lying to you?
All three engines allocate the same operating cost pool. They just disagree, sometimes by 30 to 46%, about which episode caused it. Research on costing-system distortion reports errors of this magnitude on the extremes (IJISR).
How each engine thinks
Traditional: one blended cost per completed visit absorbs all operating cost; SG&A is spread as a flat % of revenue. Complexity is invisible: a 10-minute repeat consultation "costs" the same as a day-surgery work-up with imaging, pre-authorization and recovery monitoring.
ABC: cost pools with drivers (per booking, per exam, per claim, per nursing minute). Better, but every driver is an average: an MRI counts the same as an X-ray, an Insurance B claim the same as a self-pay receipt, and all capacity cost is pushed onto episodes, so idle time silently inflates every rate.
TDABC: each resource group gets a capacity cost rate in EUR per minute; time equations estimate the minutes each visit, exam, procedure and claim actually consumes. Unused capacity, including every no-show slot, is isolated instead of allocated.
Two real time equations from this model
+ 10 if first_visit
+ 15 if complex_case
+ setup + duration if procedure (12..25 + 30..55 by class)
+ 10 if pre_authorization
+ 2..9 × claims (billing, by payer)
+ 6 per no-show rebooked
+ 20 per denied claim
Cost and margin by engine
Traditional margin vs TDABC margin
Under the hood: the full model card
The whale curve: a few pathways carry everyone else.
Sort payer-line pathways from most to least profitable (TDABC) and accumulate. The curve climbs far above 100%, then the tail gives it back. Kaplan's Kanthal case found 225% at the peak; HBS research typically finds the top 20% generate 150 to 300% of profits while the bottom tail destroys 50 to 200%.
Cumulative profit curve (TDABC)
Detail: select a point on the curve
Hover or click any point on the whale curve.
Fixing the tail: the three levers
1. Process lever
Reduce the minutes: SMS reminders and digital intake, pooled scheduling and group sessions for therapy, direct-access imaging slots, batched pre-authorizations instead of one call per episode.
2. Relationship lever
Renegotiate with evidence: take the pathway P&L to the payer. Below-cost tariffs, denial rates and pre-auth burden are contract clauses, not weather. Most payers move when shown episode-level cost.
3. Menu-based pricing lever
Price the menu, not the average: no-show fee or booking deposit, out-of-hours premium, admin surcharge for heavy-touch payers, self-pay packages priced on TDABC cost. Behaviour self-selects and the cross-subsidy stops.
Unused capacity: the cost line almost nobody measures.
An IMA field study found only 3 of 63 companies measured the cost of unused capacity. TDABC makes it a standing line item per resource group, following the CAM-I capacity model: theoretical, practical, used, idle.
CAM-I capacity bridge by resource group
Utilisation of practical capacity by month
EUR of idle capacity, by resource group and month
What a consultant would circle in red.
Nine findings, ranked by annual EUR impact, each computed live from this model. Expand any card for the calculation trace, the lever and the first action.
Sum of the nine sized opportunities below. Not all are additive and not all are fully capturable; even the conservative half typically funds the costing programme many times over.
Ask the model. It computes, it does not improvise.
Type a question about pathway profitability, payer economics, methods, capacity or what-ifs. Answers are calculated live from the demo dataset on this page.
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A CostCtrl pilot loads your GL, payroll, scheduling and billing extracts into the same engines: time equations per pathway, whale curve, no-show waste, unused capacity and all. No 6-month costing project.