Managing different commission rates without rewriting history
Reviewed and revised — 12 September 2026. This article has been updated to correct unsupported claims and reflect the current enquiry-based offer. Its original publication date and URL are retained. Different consignors may agree different terms. The important part is not how many rates you support, but whether a later payout can be reproduced from the terms that applied to that item. Define the basis Record whether the percentage applies to the gross sale, a tax-exclusive amount or an amount after specified costs. Clarify fixed charges, minimum commissions and how refunds affect the calculation. Avoid describing a rate as “30%” without defining what it is applied to. ...