Partner forecasts compound optimism: the partner is hopeful, your channel manager is hopeful, and the deal is double-counted with direct. A roll-up procedure that survives a board meeting:
— Step 1. Use historical stage-conversion rates, partner-specific. Partner deals frequently convert at different rates per stage than direct; applying the direct curve misforecasts both.
— Step 2. De-duplicate against the direct forecast first. A deal in both partner and direct pipelines must be counted once, with a clear ownership rule.
— Step 3. Apply a commit/best-case/pipeline taxonomy, and weight by historical category accuracy, not gut. Per forecasting practice, calibrated categories beat probability fields reps invent.
— Step 4. Adjust for partner forecast bias. If a partner historically delivers 60% of their committed number, weight accordingly — and review that ratio each quarter.
— Step 5. Reconcile bottom-up to a top-down run-rate. If the deal-by-deal roll-up wildly exceeds the trend line, the roll-up is wrong, not the trend.
Trade-off: heavy haircutting of partner forecasts protects credibility but can demoralize partners who feel distrusted; taking forecasts at face value preserves goodwill but burns it when the quarter misses.
Calibration caution: forecast accuracy is a property of the process, not any single deal — judge it across many quarters before adjusting bias factors.
Implications: track each partner's forecast-to-actual ratio as a first-class metric and let it, not optimism, set the haircut.
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Playbook: Rolling Up a Partner-Sourced Forecast Without Double-Optimism
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