Amazon 90% Business Hour Delivery Rule: Do This Now

What the 90% Rule Actually Measures

BHDR measures whether a shipment was delivered on the first attempt during the business customer's operating hours. That is a tighter test than on-time delivery, and this is the part that catches sellers off guard.

A package can arrive early and still fail. If it lands at midnight, before the business opens, on a Saturday, or on a holiday, it counts against you even though it was ahead of the promised date. The source names Juneteenth as an example holiday that would count against a delivery.

• On-time delivery asks: did it arrive by the promised date?
• BHDR asks: did it arrive on the first attempt during the buyer's business hours?
• Early is not the same as good under this rule. A weekend or holiday arrival is a miss.

The required threshold is 90%. That means roughly one in ten of these B2B deliveries can land outside business hours before you are in trouble. It is not a huge cushion.

Who Gets Hit and Why You Cannot Opt Out of B2B

This rule hits seller-fulfilled offers going to Amazon Business customers. FBA is out. Standard retail orders to regular consumers are out. If you never targeted B2B, you might assume this is not your problem. It can be.

Amazon Business does not let sellers block business customers. A registered business buyer can purchase your FBM offer whether or not you meant to sell to them. So the metric applies to you as long as you run seller-fulfilled offers that a business customer can buy.

• FBM to Amazon Business: counts.
• FBA: does not count.
• Standard consumer retail orders: do not count.
• Blocking B2B buyers: not allowed.

The 14-Day Clock: Why Action This Week Matters

The metric runs on a rolling 14-day window. This is the single most important thing to understand about the deadline. The shipments that decide your standing on September 30 already left your warehouse before enforcement even started.

You cannot go back and re-deliver those packages during business hours. What you can control is the workflow behind every order you ship from now on. Fix the process this week and the rolling window will start reflecting it. Wait until you get the warning and you are already 14 days behind.

• Do not wait for a notification to act. By then the damage is baked into the window.
• Every day of good deliveries you add now pushes bad older days out of the 14-day calculation.
• Heading into Q4, a metric problem compounds. Volume goes up and mistakes multiply.

Where to Find Your Current BHDR in Seller Central

Your BHDR report lives under Program Eligibilities in Account Health. This is login-gated, so you need to check it inside Seller Central yourself. Do it before September 30.

Download and screenshot the current report now. That gives you a baseline before enforcement. Confirm the rolling 14-day calculation matches what you expect. If the number looks off, you want a record of what it showed before anything changed.

• Go to Account Health, then Program Eligibilities, then find the BHDR report.
• Download it and take a dated screenshot.
• Check that the 14-day window numbers line up with your recent B2B deliveries.
• One seller reported an 83% rate despite using recommended automation and UPS. That is anecdotal and does not prove the tools were set up correctly, but it is a reason to verify your own number rather than assume automation alone handles it.

If you want the wider context on how Amazon's delivery metrics tie into account standing, read our breakdown of the five Account Health metrics that matter.

The Protected Three-Tool Shipping Workflow

Amazon states that shipments using Automated Handling Time, Shipping Settings Automation, and Amazon Buy Shipping in combination are guaranteed to meet the requirement. The key word is combination. All three must be used together.

Buying a label alone is not the protected setup. Shipping on time with your own carrier is not the protected setup. It is the three tools working together that Amazon attaches the guarantee to.

Automated Handling Time lets Amazon shape the delivery promise using your seller history and carrier data. Amazon also recommends UPS Ground, UPS Ground Saver, and FedEx Ground based on carrier performance. Switch to those carriers where it makes sense for your zones.

One warning on handling time. SKU-level handling time rules work well for consistent products. For products with variable prep time they create risk, because a fixed rule can promise a date your actual prep cannot hit. And do not try to game the system by delaying shipments to dodge an early attempt. That can hurt your other delivery metrics.

How to Size Up Your Amazon Business Revenue at Risk

Before you make big fulfillment changes, find out how much money is actually exposed. Export 60 to 90 days of orders and isolate your Amazon Business sales by SKU.

Amazon Business can represent an estimated 15% to 30% of a mature FBM catalog's contribution. That is an estimate, not an Amazon-published figure, so run your own numbers instead of trusting a range. Your real share might be higher or lower.

• Export 60 to 90 days of orders from Seller Central.
• Filter for Amazon Business sales and group them by SKU.
• Calculate revenue and contribution per SKU, not just revenue. A high-revenue SKU with thin margin is a different decision than a small SKU carrying real profit.
• Flag which carrier combinations are missing the business-hour target.

Now you know which SKUs are worth protecting and which are not. That turns a scary catalog-wide problem into a short list of decisions.

SKU-Level Decisions: FBM, FBA, or Carrier Swap

Do not move your whole catalog over a metric that affects one customer segment. That is an overreaction that costs you money and control. Make the call SKU by SKU.

• Keep reliable orders FBM. If a SKU already hits business hours consistently with a good carrier, leave it alone.
• Move B2B-heavy SKUs to FBA. FBA is exempt from this rule. For SKUs where Amazon Business is a big share and your FBM delivery is shaky, FBA removes the risk entirely.
• Change carriers by zone. If certain zones deliver outside business hours, swap to a recommended carrier for those zones instead of moving the whole SKU.

If you are weighing the trade-offs between the two models more broadly, our guide on FBA vs FBM walks through the cost and control math. And if this new rule reminds you that delivery metrics keep tightening, our look at Amazon's 2026 delivery rate rule shows where the pressure is heading.

Building an Evidence Trail Before Deactivation Risk

Amazon has not published an appeal process for disputed BHDR records. That is a problem, because a protected shipment could still get counted against you. Since there is no clear path to fight it, keep your own proof. This advice is precautionary.

For any delivery you would dispute, preserve the order-level evidence. That means the tracking events, the shipping service you actually purchased, Amazon's promised delivery, and the business-hour field for that order.

• Save tracking events showing delivery time and attempt.
• Save the purchased service so you can show it matched the protected workflow.
• Save Amazon's own delivery promise for the order.
• Record the business-hour field the metric is judged against.
• After your first notification window, recheck BHDR and document every change you made and when.

Timeline to Q4: Key Dates and What Happens When

Two dates matter. September 30 is when enforcement starts in the US, UK, and Germany. October 30 is when deactivations become possible if your rate is not recovered.

The gap between those dates is your recovery window. Because the metric rolls on 14 days, clean deliveries in early October can pull your number back up before October 30. But only if the workflow behind them is fixed now.

Conclusion

This is a narrow rule with a wide reach. It only touches FBM shipments to Amazon Business customers, but you cannot opt out, and the rolling window means the clock is already running. Get your baseline, turn on the protected three-tool workflow, and make fulfillment decisions SKU by SKU instead of panicking across the whole catalog.

The sellers who lose here are the ones who wait for the warning. By then the 14-day window is already stacked against them heading into peak season. Do the checklist this week.

For more on where Amazon is squeezing sellers, see how Q4 fees stack four deep and our take on why margins keep shrinking in 2026.

References

1. Amazon Seller Forums: Business Hour Delivery Rate enforcement discussion
2. Amazon: Fulfillment by Amazon (FBA) overview