Capacity Planning Around Busy Season

The busy-season problem is not that demand is high. It is that demand is concentrated into a period fixed by statute while capacity is roughly flat across the year. Most firms respond by compressing the same capacity harder, which is why quality incidents, review shortcuts and staff turnover all cluster in the same weeks.

Measure the peak before you manage it

Plot chargeable hours available per week against work required per week for a full year, by grade. Two things usually appear: the peak is sharper than anyone describes it, and there are troughs adjacent to it that nobody is using. That chart is the whole argument for every intervention below.

Move the demand, not just the supply

The highest-return lever is smoothing the work rather than adding people to the peak.

• Identify clients whose year-end could move, and make the case commercially.

• Pull preparation work forward — bookkeeping, fixed asset schedules, standing information.

• Set client document deadlines well before the statutory one, and enforce them.

• Price late delivery. A premium for documents received inside the peak window changes behaviour within two seasons.

• Move non-urgent advisory work deliberately into the troughs.

Every week you pull work forward is a week of capacity you already own and were not using.

Plan the trough as carefully as the peak

Firms plan January intensely and June barely at all. The result is an expensive, idle-ish period that could have absorbed advisory engagements, training, template and precedent work, or process improvement. Scheduling that work into the trough in advance is what turns seasonality from a problem into a rhythm.

Protect review capacity explicitly

The constraint in the peak is almost never preparation hours — it is reviewer availability. Preparation can be flexed with juniors, contractors or outsourcing; review cannot. Model the peak against reviewer hours specifically, and treat that as the ceiling on how much work the firm can accept.

Decline work, in writing, early

The capacity plan is only real if it can say no. Agree the ceiling before the season, decide which client segments get priority, and communicate to marginal clients in good time rather than at the point of failure. A client told in November that the firm cannot take their return this year is inconvenienced. The same client told in the final fortnight is a complaint.

Debrief while it still hurts

Hold the review in the week after the deadline, not in the summer. The specifics — which clients were late, which handoff broke, where review bottlenecked — are still precise, and the willingness to change is at its annual maximum. Six weeks later the same meeting produces generalities.