A combined wash and quick-lube business needs more than two revenue totals. A buyer needs to know which costs belong directly to each service, which costs support both, and what would change under the buyer’s operating plan. This original annual case makes the allocation visible without treating it as a valuation or a standalone business forecast.
Define the perimeter and the accounting period
Use the same annual period, legal-entity scope and accounting basis for both services and the consolidated accounts. Identify what the transaction includes: customer service obligations, inventory, equipment, occupancy rights and any shared administrative operation. Establish whether a service is operated by the seller, a tenant or another entity before putting its sales into the same business case.
The fictional example reports revenue net of tax and refunds. It treats its supply lines as expenses for the period, not as inventory purchases or a proposed inventory price at closing. All amounts are invented. The case excludes financing, income tax, depreciation, amortization, acquisition costs and capital projects from its defined operating result. Do not rename that result EBITDA or SDE without a separate accounting bridge.
Attribute direct costs before allocating shared costs
| Line | Wash | Quick lube | Shared pool |
|---|---|---|---|
| Revenue | $800,000 | $400,000 | — |
| Direct chemicals / oil, filters and supplies | $70,000 | $150,000 | — |
| Direct payroll and employer costs | $340,000 | $110,000 | — |
| Other direct operating costs | $110,000 | $40,000 | — |
| Contribution before shared costs | $280,000 | $100,000 | — |
| Occupancy | — | — | $90,000 |
| Shared administration payroll | — | — | $60,000 |
| Other shared operating costs | — | — | $30,000 |
Direct costs total $520,000 for wash and $300,000 for quick lube. Shared costs total $180,000. Therefore the consolidated operating result is $1,200,000 revenue less $820,000 direct costs and $180,000 shared costs, or $200,000. The downloadable signed ledger independently sums to that same amount.
Keep a mapping from source accounts and invoices to those lines. A worker serving both activities should not appear in full in both direct payroll columns. A supply purchase that remains in closing inventory should not also be treated as a fully consumed expense merely to simplify the case. Request the accountant’s opening-stock, purchases, usage and closing-stock reconciliation where relevant.
Change the allocation and observe what stays constant
The base sensitivity allocates 60% of every shared-pool dollar to wash and 40% to lube. This is a teaching assumption, not evidence that one universal driver is appropriate. It assigns $108,000 to wash and $72,000 to lube, leaving allocated results of $172,000 and $28,000.
The alternative gives wash 40% and lube 60%. Wash receives $72,000 of shared cost and shows $208,000 of allocated result; lube receives $108,000 and shows a loss of $8,000. Both alternatives still sum to $200,000. The lube presentation turns negative even though no consolidated revenue or cost changed.
Service contribution = service revenue − directly attributed operating costs Allocated service result = contribution − allocated share of shared costs Consolidated result = sum of service contributions − total shared cost pool
For actual work, assess each pool’s driver separately: supported occupied area for an occupancy allocation, recorded time for shared work, or another documented basis that fits the cost. Preserve the denominator and source period. A revenue-share allocation can be a sensitivity, but it does not prove how staff, space or equipment are used.
Tie back to recorded accounts without plugging a gap
The example’s recorded operating result is $200,000, so the calculated-minus-recorded difference is zero. Change the recorded amount to $195,000 to expose a $5,000 difference. Investigate missing accounts, period differences, inventory treatment, duplicate costs or an inconsistent operating-result definition. The calculator never creates an adjustment to make the totals agree.
After that reconciliation, use the earnings normalization worksheet to evaluate documented adjustments and replacement work. Keep the service-allocation exercise separate from the owner-operated versus managed case. An apparent segment loss is a question to investigate, not an instruction to remove that service from the purchase.
Model separation costs before calling a service standalone
Allocated occupancy is not necessarily the rent a separated service would pay. Shared staff might need replacement, an equipment system may serve both operations, and customer visits or packages can cross service lines. Determine which contracts, utility systems, access rights and customer obligations can actually be separated and what the new cost would be.
Review bundled discounts and cross-use carefully. Record the accounting allocation for a bundled sale and the service obligations it creates. Do not count one payment as full revenue in both activities or assume every quick-lube customer will purchase a wash after a change of ownership. The model provides no segment multiple, synergy premium or automatic overhead savings.
Inspect inventory, waste and service scope
| Evidence group | Questions to assign |
|---|---|
| Inventory | What quantities, ownership, counts, costs, obsolete items and cutoff records support the closing schedule? Separate usable stock from waste. |
| Service operations | Which exact services are performed, by whom, with which equipment and authorizations? Does the plan add services after acquisition? |
| Used oil and other wastes | Which streams, storage locations, tanks, collection records and removal providers exist? Have the environmental professional identify the applicable requirements. |
| Site and equipment | Which drains, separators, shared utilities, service agreements and historical uses need further inspection or records? |
DEC publishes specific used-oil management requirements and related storage and disposal guidance. Classify the actual streams and tank arrangements with the environmental professional. Do not assume used oil, other fluids and wash wastewater follow the same rules or that a removal invoice resolves every environmental question.
DMV’s repair-shop regulations identify exclusions for specified activities performed solely, including changing oil, and explain that listed services performed in a registered repair shop remain within that framework. A “quick lube” name therefore does not by itself settle the registration question. Check the actual activity mix and current requirements with the responsible adviser and agency.
Download the fictional signed annual segment ledger v1
Download the blank cost-attribution and allocation register
Continue with the mixed-service valuation guide, environmental diligence and owner replacement work plan.
Maintain the evidence and case version
The buyer’s accountant owns the transaction-specific tie-out and classification decisions; the environmental adviser reviews the actual operational scope. The website editor reviews this invented v1 method annually and rechecks agency guidance when service or regulatory scope changes. No external professional has verified an actual facility through this example.
Questions before using the result
Does changing the allocation change total earnings?
No. In this model the same shared pool is allocated between services. Only the segment presentation changes; the consolidated result remains fixed.
Is the allocated lube result its standalone cash flow?
No. Separation can change rent, staff, systems, contracts and other costs. Build a supported standalone operating plan before treating it that way.
Are the supply amounts a closing inventory value?
No. They are invented annual expense lines. Closing inventory requires its own quantity, ownership, cost, condition and cutoff review.
Does a balanced ledger prove revenue or environmental compliance?
No. It proves the arithmetic of the entered case. Source authenticity, accounting treatment, operating permissions and environmental conditions require separate evidence.
Connect the next evidence question
Portfolio earnings and integration. Each workbook has its own scope, written method and fictional case. Reconcile definitions before manually carrying a result into another review.
Sources and scope
Official and original sources checked October 17, 2026. These sources support the identified rules and methods; they do not verify a particular business or property.
- NYS Department of Environmental Conservation — Used oil managementUsed-oil management and related storage/waste questions. Actual waste streams, tanks and activities determine applicability; not a site clearance.
- New York State Department of Motor Vehicles — CR-82 Motor Vehicle Repair Shop RegulationsSection 82.1 scope and exclusions, including specified oil-change-only activities. A quick-lube label alone does not determine registration or all other obligations.
Continue your review
Verify the revenue · Normalize earnings · Model the cash flow