A single annual figure can describe two very different businesses equally well. A monthly view is what actually shows whether a business is steady, seasonal, or quietly declining underneath a flat-looking year-end number.
Key takeaways
Treadstone Law’s guidance on setting a working capital target for a seasonal Ontario business states the underlying principle directly: “a working capital target is meant to reflect the level of working capital the business normally needs to operate,” and a single flat figure can misrepresent what is normal depending on where the business sits in its sales cycle at closing. (treadstonelaw.ca) The fix the same source recommends is structural, not cosmetic: use “historical, same-period figures rather than a flat annual average,” so neither party is penalized or advantaged purely because of when in the cycle the closing date happens to fall. (treadstonelaw.ca) That is a working-capital-specific rule, but the underlying logic generalizes to results analysis as a whole: an annual total is an average of twelve very different months, and averaging away the shape of the year is exactly what makes a genuinely seasonal or declining business look identical to a steady one on paper.
deavo’s review of what Canadian trades businesses are selling for makes the same point from the financing and valuation side rather than the working-capital side: “a furnace and HVAC business with revenue concentrated in a few months of the year is assessed differently than a plumbing business with steadier, year-round call volume.” (deavo.ai) Two businesses with identical annual revenue are not treated as interchangeable once the monthly pattern behind that revenue is examined — concentration risk, seasonal cash-flow strain, and the buyer’s ability to finance the gap between peak and trough months are all monthly-resolution questions an annual total cannot answer on its own.
Treadstone Law’s explainer on quality of earnings reports lists “working capital trends over time” as one of the areas the report is built to cover, alongside normalizing earnings and testing revenue sustainability. (treadstonelaw.ca) A trend is, by definition, a series of observations over time — testing it meaningfully requires monthly or at minimum quarterly data, not a single year-end snapshot. A business that ends the year at a healthy working capital balance can still have spent three months mid-year drawing heavily on a line of credit to cover a seasonal trough, and an annual review that only checks the year-end figure will never see it.
The working capital adjustment mechanism itself, described in a separate treadstonelaw explainer, reflects the same underlying reality: “a business is a living thing. Inventory gets sold, receivables get collected, bills get paid, all while the deal is being negotiated.” (treadstonelaw.ca) A living, moving business is not accurately summarized by a single annual snapshot at either end of the year — it is summarized by the pattern of movement in between, which is exactly what a monthly view is built to show and an annual figure is built to smooth over.
Beyond seasonality, a monthly breakdown is the fastest way to spot a business in decline that a flat or growing annual total is still masking — a strong first half offsetting a weakening second half produces the same annual revenue figure as steady performance throughout, but the two businesses are worth very different amounts going forward. It also isolates exactly when in the year any one-time item landed, which matters directly for the normalization work a quality of earnings review is already doing: a large one-time gain booked in a single month is far easier to identify, and to strip out cleanly, against a monthly baseline than against an annual number that has already absorbed it.
The obstacle in practice is rarely the analysis, it is the data. Many smaller Canadian targets close their books formally once a year and produce only rough, unreviewed internal figures the rest of the time, if they produce monthly figures at all. That is precisely why deavo’s general due-diligence checklist asks for “two to three years of historical financial statements, plus current-year interim statements” rather than assuming full monthly detail will simply be handed over. (deavo.ai) Where formal monthly statements do not exist, the workable substitute is reconstructing a monthly view from bank statements, point-of-sale exports, or accounting-software transaction detail — slower than asking for a report that already exists, but the same underlying data the seller’s own bookkeeping was built from, and usually available even where a clean monthly income statement is not.
A business reports flat annual revenue of $3,100,000 in each of the last two years — on paper, a stable target. A monthly breakdown tells a different story: in year one, the last four months of the year (September through December) accounted for $1,280,000, or 41% of the annual total. In year two, that same four-month window fell to $980,000, or 32% — a real decline in the business’s strongest season, offset by modest growth earlier in the year that kept the annual figure flat. An annual-only review would show two identical $3,100,000 years and conclude the business is steady. The monthly view shows the opposite: the business’s highest-margin, highest-volume period is shrinking, and whatever is growing in the softer months is not enough to compensate on its own if the fourth-quarter decline continues into year three. That is a materially different underwriting conclusion, and it is invisible in the annual number.
Related: how the same-period principle sets a working capital target, testing a forecast against the seller’s own track record, scoping a quality of earnings review to test trends, not just totals
No. It is most visibly useful there, but it also catches a within-year shift between a strong and a weakening half that an annual total can offset into an unremarkable flat figure, as in the example above. The seasonal case is simply the easiest one to explain.
Not as a blanket legal requirement, but the mechanism is already built into working capital targeting for seasonal Ontario businesses — treadstonelaw’s guidance recommends “historical, same-period figures rather than a flat annual average” specifically to avoid the distortion an annual figure introduces. (treadstonelaw.ca)
There is no fixed rule, but two to three full years of monthly figures is generally what is needed to distinguish a genuine seasonal pattern, or a genuine trend, from ordinary month-to-month noise — the same historical window deavo’s general due-diligence checklist already calls for as the base data set. (deavo.ai)
A short call is enough to work out whether an annual number is hiding something worth a closer look.
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