Amazon seller-fulfilled operations
Performance rates, from your counts.
Calculate five rates Amazon defines for seller-fulfilled orders. Use the numerator and denominator from the same Seller Central report window.
Rate = affected orders or shipments ÷ eligible orders or shipments × 100. This page does arithmetic only; it does not connect to Amazon or decide account status, program eligibility, or enforcement.
Report counts
Calculated rates
Method and official scope
Amazon defines order defect rate as orders with one or more defects divided by orders in the applicable period; cancellation rate as seller-cancelled orders divided by orders; late shipment rate as late-confirmed shipments divided by shipped orders; valid tracking rate as shipments with valid tracking divided by eligible shipments; and on-time delivery as units delivered by the promised date divided by units with a delivery scan. Several metrics use different windows and eligibility rules, so do not reuse one denominator across every field.
Official sources, checked 15 October 2026: Amazon Order Performance program policy and Seller Fulfilled Prime performance definitions. Seller Central is the source of truth for the current report window, exclusions and policy.
FAQ
Does this determine whether my Amazon account is compliant?
No. It only divides the counts you enter. Amazon applies current definitions, time windows, exclusions and program rules in Seller Central.
Can I combine FBA and seller-fulfilled orders?
No. The cited performance metrics apply to specified seller-fulfilled populations. Use counts from the corresponding Amazon report.