The Slow Season Is Coming: How to Build a September Budget Now

6 min read · Cash Flow

The Slow Season Is Coming: How to Build a September Budget Now

The short answer

August is the month to build your September and Q4 budget, while summer cash is still coming in and you have real numbers to plan against. A slow-season budget means knowing your fixed overhead, your realistic revenue expectation for a quieter quarter, and the gap between them that your summer reserve needs to cover. Waiting until the slow season has already started to build the budget means reacting instead of planning.

Key takeaways

  • Build the slow-season budget while summer cash is still flowing, not after it stops.
  • Know your fixed overhead cold. It does not shrink just because revenue does.
  • Estimate realistic slow-season revenue from your own historical numbers, not hope.
  • The gap between overhead and slow-season revenue is exactly what your reserve needs to cover.

Why August is the right time to plan

By August you have most of the summer's numbers in hand, real revenue, real margins, real cash position, and there is still time to build a reserve or adjust spending before the slow season actually arrives. Waiting until October to figure out the budget means you are reacting to a cash crunch that a little planning in August could have softened.

What goes into the slow-season budget

Start with fixed overhead: rent, insurance, loan and lease payments, office payroll, the costs that do not care what season it is. Then build a realistic revenue estimate for September through November based on your own historical numbers from prior years, not an optimistic guess. The difference between overhead and expected slow-season revenue is the gap your summer reserve, or a deliberate cost adjustment, needs to close.

What to do with the gap once you see it

If the gap is small, a modest summer reserve likely covers it comfortably. If it is large, this is the moment to look at maintenance agreement push, generator or IAQ upsells to smooth the season, or planned cost adjustments, rather than discovering the shortfall in real time in October with fewer options left.

Build it in August

Frequently asked questions

How far ahead should I plan for the slow season?

Start in August, while summer revenue is still coming in and you have real numbers from the current year to plan against.

What if I don't have historical data for slow months?

Use whatever partial history you have, and be conservative. It is safer to overestimate the slow-season gap than to underestimate it.

Should maintenance agreements factor into the slow-season budget?

Yes. Recurring maintenance revenue is one of the more predictable income sources during the shoulder seasons and should be built into the estimate.

Plan the slow season while you still have summer cash

911 Bookkeepers builds seasonal budgets and cash flow forecasts in Xero for HVAC contractors so the slow season is planned for, not survived. Book a free books review at https://911bookkeepers.com or call (225) 274-6576.

Jeremy Brewer is the founder of 911 Bookkeepers LLC in Baton Rouge, Louisiana. He came up through the HVAC trade and works as a licensed paramedic in EMS. He is a Xero Certified Advisor. 911 Bookkeepers is built for the trades.

Related posts in this series: Why HVAC Contractors Run Out of Cash in Summer · How Much Cash Should Your HVAC Business Keep in Reserve? · Mid-Year Financial Check-Up for HVAC Contractors

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