Ask where commission is actually calculated and the answer is never one place. The comp plan document says one thing, a quarterly workbook with a tab per rep says another, a formula field in the CRM says a third, and the reps keep private spreadsheets because they have learned not to trust any of them. In a 2026 survey of North American sales management, 62% of reps said they shadow-account their own commissions, and Salesforce's State of Sales research has reported that more than 60% of reps hit a commission error in the previous year. Every hour spent reconciling a payout is an hour not spent selling.
Changing the plan is worse than calculating it. Legacy incentive compensation platforms are configured, not authored: implementations run six to twelve months, and mid-cycle changes route through the vendor's professional services queue. Qobra's buyer research found the single most common frustration with legacy ICM systems was the inability to change a compensation plan without vendor involvement. So the mid-quarter kicker sales leadership wants becomes a five-figure change request, and in the meantime someone codes it into the workbook as a manual adjustment column.
Then the questions arrive that nobody can answer cheaply. A rep disputes March: which plan version was live when that deal closed, did the accelerator apply before or after the split, who approved the SPIF? Finance needs the same lineage for ASC 340-40, where capitalized commission amortization depends on plan terms finance does not control, and auditors want a schedule that ties back to source. California Labor Code 2751 goes further: commission terms must be in writing, must set out the method of computation, and must be re-issued when the plan changes.
A workbook nobody fully understands is not an answer to any of those questions.