TL;DR
Evaluate a device-related acquisition with its actual service commitment attached. Separate evaluation work, device supply, fitting, continuing practice services, manufacturer coverage and outside-provider costs. Use actual receipts, terms and finance-approved cost inputs. A service-inclusive contribution worksheet can expose an incomplete campaign purchase; it cannot predict returns or justify a clinical recommendation.
Identify what the device price commits the practice to do
A campaign can present a device price while the practice's agreement also includes later work. The owner needs to know which services the offer commits the team to deliver, who funds them and which costs change with the activity.
NIDCD's purchasing questions include warranty coverage, servicing, minor repairs, adjustments and loaner arrangements. NIDCD's hearing-aid guidance. That supports checking the actual service arrangement. It does not establish that any particular practice includes those services or that a warranty pays for the practice's labor.
Read the real agreement with the commercial and service owners. Identify the device and service scope being marketed, any separately charged work and any excluded service. Avoid using “complete aftercare” as a worksheet input until the practice can explain exactly what it means.
Build an obligation map before assigning costs
For every marketed inclusion, record the party responsible and evidence of the actual terms. Device manufacture, professional service and administrative coordination are different responsibilities even when the visitor sees a bundled offer.
| Obligation to examine if applicable | Term to verify | Resource or cost to investigate |
|---|---|---|
| Initial evaluation | Included, separately charged or separate relationship | Qualified appointment work and collections |
| Device supply and fitting | Actual order and service inclusions | Device procurement and practice delivery work |
| Continuing adjustments or support | Included scope, exclusions and duration | Staff activity and service capacity |
| Repairs | Manufacturer coverage versus practice handling | Shipping, coordination, uncovered parts or labor |
| Loaner arrangement | Whether offered and its conditions | Inventory and handling treatment approved by finance |
| Return or exchange | Refund rules and retained service charges | Refunds, credits, completed work and replacement costs |
| Outside-device service | Accepted work and separate terms | Service receipts and delivery costs without assumed device margin |
Leave inapplicable rows out of the practice version. A blank term is unresolved, rather than unlimited included service. Ask qualified commercial reviewers to settle ambiguous promises before promotion.
Complete the contribution worksheet
Choose a defined acquisition group and observation period. Have finance approve compatible units and cost treatment. Keep actual recorded results separate from planning assumptions.
| Variable | Meaning under this worksheet | Evidence needed |
|---|---|---|
| R | Collected receipts assigned to the defined group before refunds listed separately below | Finance-approved receipt basis |
| Q | Refunds and credits not already netted out of R | Linked transaction evidence |
| D | Device procurement and other product costs assigned to the group | Actual supplier and credit treatment |
| S | Completed service delivery costs not already in D | Actual work records and approved costing |
| O | Provision or planning allowance for remaining included obligations | Finance-approved method, uncertainty and remaining scope |
| M | Acquisition commitment not included in the other fields | Actual media, fees, creative and implementation costs |
Under those definitions, R − Q − D − S − O − M is the worksheet's service-inclusive contribution subtotal after acquisition cost. It is an arithmetic construction for the named fields, not a universal accounting measure. A refund already netted from R must not also appear in Q. Staff work included in S must not be counted again in M.
Reconcile O as included work moves into S so the same obligation is not counted as both remaining and completed. Keep supplier recoveries in the finance-approved treatment of D and customer refunds in Q; a supplier credit is not automatically a customer refund. Reassess remaining obligations after an exchange or return under the actual agreement rather than erasing all future work from the worksheet.
A missing O does not mean the remaining service obligation costs nothing. It means the owner cannot yet complete this version of the model. Ask finance whether it can support a provision, a separate commitment disclosure or another clearly labeled approach. Do not invent an industry average to fill the cell.
Separate capacity from cash
A future included service may occupy staff capacity without creating an immediate additional invoice. Conversely, an external repair or temporary staffing arrangement may change cash expenditure. Keep finance's valuation method explicit so a labor allocation is not described as cash saved or spent automatically.
Review the service mix as well. Outside-device support can consume a different work pattern from a practice-supplied device arrangement. Compare actual service obligations rather than assigning the same device margin to every contact.
Use the scope budget guide to identify the full acquisition purchase. This worksheet adds the practice's downstream service commitment, which remains relevant after the campaign invoice is paid.
Make the next purchase conditional on the missing evidence
If the offer's aftercare wording is unclear, clarify and approve the terms. If the terms are clear but the team cannot estimate delivery work, measure actual tasks prospectively. If the remaining obligation is understood but service capacity is constrained, price the capacity decision alongside the campaign.
Keep the model descriptive. A favorable subtotal does not show that the campaign caused the activity, and an unfavorable subtotal does not justify pressuring anyone into a device purchase. Marketing and commercial evaluation must preserve the person's choices and qualified care decisions.
Frequently asked questions
Does manufacturer coverage make practice aftercare free?
Read the actual coverage and service agreement. Product coverage and the practice's handling or professional work are separate questions.
Can we use device revenue as the campaign return?
State what it measures, then examine refunds, product costs, service obligations and acquisition costs. Revenue alone leaves those commitments unanswered.
Must we estimate a lifetime value?
No. Use a defensible observation period and disclose remaining obligations. Unsupported lifetime assumptions create apparent precision without supplying evidence.