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Field note 15 Oct 2025 6 min read

The forecast that runs the firm, not the firm that chases the forecast.

Most firms forecast on Sunday night. They run on the wrong number all week. The right system forecasts every hour.

Sunday night. One person in the firm opens the forecast spreadsheet, copies numbers from four other spreadsheets, applies assumptions from memory, and produces the document that runs Monday morning's leadership meeting.

That is the firm running on a forecast. Not a forecast that runs the firm.

What the right forecast does.

Three things.

It tells you what your revenue will be in twelve weeks, with confidence bands. Not just the wish. The actual range, computed from the data the firm already has.

It tells you what you should be selling right now to make that revenue land. Pipeline gaps surface as a target for sales, not as a panic in week ten.

It tells you what you should be hiring right now to deliver that revenue. Capacity gaps surface eight weeks out, not three days before the engagement starts.

Why spreadsheets cannot do this.

Spreadsheet forecasts are static. They are right for an hour on a Sunday night and stale by Tuesday morning. The deal that closed yesterday is not in the forecast. The consultant who resigned this morning is not in the forecast. The retainer that renewed at 80 percent instead of 100 is not in the forecast.

The forecast is wrong by the time anyone reads it. The firm makes decisions on a number that no longer exists.

What live forecasting looks like.

The system holds the pipeline, the rates, the resource plan, the retainers. The forecast is a query, not a document.

Pipeline weighted by stage confidence. Retainer revenue with rollover and probability of renewal. Resource based revenue from confirmed allocations. Each input is current. Each input is auditable. The number refreshes when anything underneath it changes.

That gives you committed revenue, pipeline revenue, and a total forecast across the next twelve weeks. Refreshed live. Compared against trailing twelve weeks of actual. Visible to anyone in the firm with the right permission.

What the leadership team should do with it.

Three things, weekly.

Look at committed versus pipeline. If committed is below 80 percent of the twelve week target, sales gets a clear ask. Not a vague pep talk. A number.

Look at resource capacity against the forecast. If pipeline closes and resource is not staffed, hiring or partner engagement starts now, not in six weeks.

Look at margin trajectory by client. If a flagship account is trending down on margin, intervene before the engagement closes red.

The cultural change.

The biggest shift is meetings. EXCO stops being a forecast review. The forecast is already there. EXCO becomes a decision meeting. What do we do this week given what the system shows?

That is the firm running on the forecast. Decisions are tighter. Hiring is calmer. Sales has clarity. The Sunday night forecast person gets their Sunday back.

ConsultancyOS replaces the Sunday spreadsheet with the live system. Apply for the founding cohort.

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