Businesses with a concentrated season are usually assumed to be at risk in the off months. The dangerous period is the run-up to peak, when spending is highest and revenue has not yet arrived.
The season is funded before it earns
Inventory has to be bought, seasonal staff hired and trained, and marketing placed, all weeks or months ahead. Every one of those payments precedes the first sale of the season.
The result is a deep cash trough at exactly the point of maximum commitment, funded from the previous year's surplus or from borrowing.
If the previous season was weak, the trough is funded from a smaller reserve, which is how one poor year quietly determines the shape of the next.
Demand forecasting errors are asymmetric
Ordering too little means lost sales that cannot be recovered, because the demand does not reappear after the season ends.
Ordering too much means holding goods for most of a year or clearing them at a discount, and the discount is usually taken at the moment cash is tightest.
Since the penalty for shortage is more visible than the cost of surplus, most operators lean toward over-ordering, and carry the consequence into the following year.
Growth multiplies the trough
A business that decides to grow its peak by half has to increase its pre-season outlay by roughly the same proportion, months before knowing whether the demand exists.
So expansion in a seasonal business is a bet placed with cash the business does not yet have, on a season it cannot test in advance.
This is why seasonal firms often fail in a year of record revenue: the revenue arrived after the obligations, and the gap between them was wider than the reserve.
Lenders read the same seasonality differently
Seasonal working capital lines exist precisely for this pattern, and they are underwritten on the trading history that demonstrates the pattern is reliable.
A newer business without that history is asking a lender to fund a trough on the basis of a forecast, which is a different and harder conversation.
Terms, availability and cost vary by lender and by circumstance, and an accountant familiar with the sector is better placed than a generic comparison to judge what is realistic.
Fixed costs decide how long the quiet months last
Rent, insurance, loan payments and any year-round staff continue through the off season regardless of trading, so the annual result depends heavily on how large that fixed base is.
Operators who reduce fixed commitments — shorter leases, variable staffing, equipment rented rather than owned — buy the ability to survive one bad season.
The trade is a lower margin at peak in exchange for a lower failure probability across the cycle, which is the calculation the business is actually making whether or not it is stated.