How to Build a Commission Attribution Engine in Google Sheets

Commission disputes in sales teams are rarely caused by calculation errors — nearly 95% stem from payments being matched to the wrong sales rep in the first place. A key challenge is that buyers often check out using personal email aliases, Gmail dot variations, or unregistered addresses, making attribution unreliable. The proposed solution involves normalizing email addresses by stripping tags and Gmail-specific dots before attempting to match payments to rep accounts. Domain-based matching is also supported, but deliberately excludes free providers like Gmail and Outlook to prevent bulk misattribution. The system returns a confidence score alongside each match, allowing high-confidence results to be auto-approved while lower-confidence ones are routed for manual review.
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