Amazon is now enforcing a 90% Business Hour Delivery Rate for seller-fulfilled orders to Amazon Business customers, effective September 30. This metric is measured on a rolling 14-day window — meaning your compliance standing is determined by shipments that already left your warehouse, not future ones.
What You Need to Know
- Threshold: 90% of shipments to B2B Business customers must arrive during business hours (typically 8am–5pm weekdays)
- Measurement window: Rolling 14 days, evaluated continuously
- Initial enforcement: Miss the rate and you’ll receive a notification with Amazon’s recommendations
- Escalation: Continued failure to meet the threshold can result in account restrictions
- Lag factor: Because the window is rolling and backward-looking, compliance issues are already baked in by the time you see them — proactive shipping schedule management is critical
What This Means for Fulfillment Strategy
- Review your current carrier cutoff times and delivery windows, especially for B2B orders
- If you’re close to the threshold, identify which shipments are arriving outside business hours and adjust accordingly
- Consider carrier selection and shipping method impacts on delivery windows
- Monitor your B2B order volume separately from B2C to understand the specific compliance pressure
How Squatio Helps
While this rule is primarily a fulfillment and logistics execution issue, sellers who are scaling B2B channels or entering Amazon Business for the first time can use Prospect (Product Database) to understand which of your current SKUs have the strongest B2B demand and where compliance risk is highest. Understanding your B2B product mix helps you prioritize which items need the tightest shipping discipline.
What’s your current on-time delivery rate to B2B customers, and how is your carrier setup configured for business-hour windows?
Source: https://www.ecomcrew.com/amazons-business-hour-delivery-rule-starts-monday/