Forecast accuracy below 70 percent
US businesses using stage-probability-weighted pipeline forecasting in HubSpot or Salesforce regularly produce forecasts that are 20 to 40 percent higher than actual closed revenue. The default stage probabilities — 20 percent at Prospect, 40 percent at Qualified, 60 percent at Proposal, 80 percent at Negotiation — are not calibrated against the company's actual historical close rates by stage. They are generic defaults that were set during CRM implementation and never updated. There is no deal age adjustment reducing the probability of deals that have sat in the same stage past their expected window. There is no activity signal weighting increasing the probability of deals with recent engagement. Finance cannot use the number. Sales leadership knows it is wrong. The forecast exists but does not forecast.