When budget season starts

Building next year's budget

The annual budget for a consumer brand starts from trailing twelve months of actuals, spreads the year by the brand's own seasonality, and builds up by channel: revenue, landed product cost, fulfillment, marketing and overhead, then inventory and cash. Most of the weeks it takes go to gathering and cleaning actuals, not to the decisions. A model trained on your definitions does the gathering, so leadership spends budget season on the choices.

By Jim Wilson · Updated October 14, 2026

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Where budget season actually goes

  • Gathering actuals from the accounting system, the store platform, marketplaces and wholesale, and making them agree.
  • Rebuilding the seasonality by hand in a new spreadsheet, again.
  • Re-pricing product cost with this year's freight and duty, from the landed-cost file.
  • Tying the revenue plan to inventory and cash, so the buy and the bank balance work with the sales plan.
  • Rebuilding all of it every time a target moves.

Only the last step involves a decision. The rest is assembly, and assembly is what a trained model is for.

Same question, two answers

"What happens if we grow 20% next year?" Illustrative example
Out-of-the-box AI

20% growth on $21.8M is $26.2M. Assuming costs scale proportionally, profit would also grow about 20%.

Assumes every cost scales with revenue, ignores inventory and cash, and has no view of where the growth comes from.

Trained on your business

$26.2M works only if new-customer acquisition grows 35% at today's cost, which is the risk. Inventory has to land six weeks earlier for spring, which takes the cash low point from $1.4M to about $600K in March. Margin holds if the freight savings in the landed-cost file stick. Wholesale growth is the safer path.

Built from your channels, your cost file and your cash cycle, with the trade-off named.

More on the starting point: run rate vs trailing twelve months.

When to start

Before budget season, not during it. An operations audit six to eight weeks ahead writes down the definitions and builds the baseline, so the budget meetings start from agreed numbers instead of spending the first week arguing about them.

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Questions

Where should a budget start?

From trailing twelve months of actuals on your own definitions, by month and channel. Starting from last year's budget carries last year's misses forward.

How do you spread the year by month?

By your own seasonality curve, from two or three years of history, adjusted for anything known to move: a launch, a new wholesale account, a holiday on a different week.

Does the model set the targets?

No. Leadership sets targets and makes the trade-offs. The model builds the baseline, runs the scenarios you ask for, and keeps the budget, the inventory plan and the cash forecast consistent with each other.

What happens after the budget is approved?

It becomes the plan every other report is measured against: the weekly recap, the close pack and the board package all compare to it automatically.

Thirty minutes. Bring one question your team answers every week.

I'll show you how generic AI answers it, how your best analyst would, and what it takes to close the gap.

jim@trimtabops.com