An interim P&L can describe a strong six months without establishing a strong full year. Review the same reporting periods, accounting basis and business scope before annualizing revenue or owner earnings. This original case connects monthly records to trailing results and separately documented adjustments.
Fix the scope and the starting earnings definition
Write down the site, legal-entity scope, accounting basis, currency, cutoff and included accounts. Use an explicit reported operating-earnings definition consistently across all months. A change from cash to accrual accounting, an added service or an acquired location can break comparability even when the table adds correctly.
Use earned revenue net of tax collections. Reconcile it to POS, billing and settlement records through the revenue verification method and worked monthly cash proof. Deposits, prepaid membership cash and earned revenue can belong to different periods. Keep unreconciled differences visible instead of forcing a balancing earnings adjustment.
Collect 24 completed months and compare like windows
Use 24 consecutive monthly rows, oldest first. The latest 12 form current trailing twelve months (TTM); the preceding 12 form prior TTM. Compare the current year-to-date months with those same months in the preceding year. Do not substitute a partial month, duplicate month, silent zero or an annual total entered in one month.
The month-label helper fills labels only, leaving entered amounts unchanged. Confirm the completed-period cutoff yourself. The tool checks month format and sequence; it cannot authenticate a close, a source export or whether an accountant has finished the period.
Accepted monthly earnings = reported operating earnings + accepted signed adjustments TTM = sum of the chosen 12 completed monthly periods Simple YTD annualization = completed YTD sum × 12 / number of completed YTD months
Reproduce the fictional seasonality case
The dataset runs July 2024 through June 2026. Its first twelve months each show $70,000 revenue and $15,000 reported operating earnings. July–December 2025 each show $50,000 revenue and $5,000 earnings. January–June 2026 each show $100,000 revenue and $30,000 earnings. These are invented shapes, not a New York weather pattern.
| Comparison | Revenue | Reported operating earnings |
|---|---|---|
| Previous TTM | $840,000 | $180,000 |
| Current TTM | $900,000 | $210,000 |
| Prior January–June | $420,000 | $90,000 |
| Current January–June | $600,000 | $180,000 |
| Current YTD mechanically doubled | $1,200,000 | $360,000 |
Current TTM revenue grows about 7.14%, while the six-month annualization produces a much larger headline. Neither current TTM nor that annualization determines the coming six months. The $360,000 earnings annualization is $150,000 above the entered $210,000 TTM reported result; it is a comparison to investigate, not a forecast or proof of misstatement.
Map each adjustment to its month and evidence
The example accepts a +$12,000 nonrecurring-cost adjustment in April 2026 and a −$5,000 missing recurring cost in May. Adjusted TTM becomes $217,000. A separate unaccepted +$20,000 seller claim in June appears only in claimed earnings, taking that case to $237,000. The accepted selection is a reviewer input, not verification by this tool.
Give every adjustment a unique ID, monthly date, signed amount and description. An accepted nonzero amount needs a non-sensitive evidence reference. Add back an expense only when it is already deducted from the starting measure. Recurring repairs, necessary owner replacement work and deferred costs do not disappear because a seller requests an add-back.
Retain the source account, invoice, counterparty, rationale and reviewer decision in the private work file. Use the annual earnings worksheet to bridge the defined annual result to the intended owner-operated or managed case. Do not rename the monthly result SDE, EBITDA or lender cash flow automatically.
Annotate events without manufacturing normalized earnings
Record closure dates, hours, pricing, promotions, package mix, member billing changes, equipment work and additions to business scope. Compare matching calendars and account definitions before attributing a revenue change to one event. Membership cash needs its own earned-revenue and remaining-service review.
A named public operator describes its own seasonality and subscription accounting in its 2025 filing; that does not establish a universal seasonal curve for this site or region. Mister Car Wash · SEC filing: 2025 Form 10-K. Use local operating records first. NOAA provides historical station observations, but station coverage, observation period and missing data must be checked. NOAA National Centers for Environmental Information: Climate Data Online. A rainy day count alone does not measure lost sales.
Do not turn weather, a closure or an unusually strong month into an automatic earnings adjustment. The tool supplies no causal weather model, forecast or valuation multiple. A scope change may require separate comparable-site or service analysis beyond this worksheet.
Interpret losses and undefined ratios honestly
Negative revenue can remain visible in a refund-heavy period, and negative operating earnings are valid inputs. When prior revenue is zero or negative, percentage growth is undefined here. For a nonpositive prior earnings denominator, use the displayed dollar change rather than a misleading growth percentage. A missing amount is not zero.
Compare service economics in the membership contribution planner; test funding with the financing comparison. Cash collection timing, tax remittances, capital projects and loan principal belong in the cash runway schedule, not silently inside reported operating earnings.
Download the blank evidence worksheet
Download the fictional teaching case v1
Maintain a reproducible monthly review
The accountant and buyer retain the original exports and adjustment version. Refresh when accounts, scope or reporting policy changes. Keep a named filing period when citing public-company policies; review weather-source links and the site's methodology annually. These working tables do not replace an independent QoE or audit.
Questions before using the result
Should I double six months of earnings?
You can calculate that arithmetic as a comparison, but it does not establish a full-year forecast. Inspect trailing and same-period results with the underlying operating calendar.
Does an accepted adjustment mean verified?
No. It means selected by you. The supporting evidence and reviewer responsibility remain outside this tool.
Can I leave out a closed month?
No. Include the actual completed month and its reported amounts. Annotate the closure; omitting it changes the comparison window.
Reconcile closing balances separately from period earnings
Reconcile closing balances separately from period earnings with the private tool, written method and fictional case. Reconcile scope, cutoff and obligations before manually carrying results between tools.
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.
- Mister Car Wash · SEC filing — 2025 Form 10-KOne public operator's membership revenue recognition and POS-to-bank audit; not a small-business margin benchmark.
- NOAA National Centers for Environmental Information — Climate Data OnlineHistorical station observations and station history; not causal evidence for a revenue adjustment or a site forecast.
Continue your review
Verify the revenue · Normalize earnings · Model the cash flow