Amazon's New Business Hour Delivery Rule: The 90% Bar Seller-Fulfilled Sellers Must Hit by September 30

Amazon confirmed on Seller Central on July 13, 2026 that professional sellers must hit a new Business Hour Delivery Rate, BHDR, of 90% or higher on seller-fulfilled orders sold to Amazon Business customers. Enforcement starts September 30, 2026 in the US, UK, and Germany. Miss the line by October 30, and your seller-fulfilled offers get deactivated for Amazon Business buyers specifically, while your FBA offers and standard retail orders keep running untouched.

This is a narrow rule with a sharp edge. It only applies to seller-fulfilled (FBM) orders placed by Amazon Business customers, not consumer orders and not anything fulfilled by Amazon. If you don't sell B2B through Amazon Business, this doesn't touch you. If you do, and delivery timing hasn't been something you've actively managed, it's worth ten minutes right now to check where you stand.

What Business Hour Delivery Rate Actually Measures

BHDR tracks how often a seller-fulfilled order to an Amazon Business buyer arrives during that customer's stated business operating hours, not just whether it arrives on time by the promised delivery date. A package that shows up on a Saturday, or at 9pm on a weeknight, can satisfy your delivery date commitment and still count against you here, because the office, warehouse, or storefront receiving it wasn't staffed to accept it.

Amazon measures BHDR over a rolling 14-day window. That's a tight cycle. A bad run of five or six late-in-the-day or weekend deliveries can drag your average below 90% fast, and because the window keeps rolling, you don't get a full month to average it back out. You need to fix the pattern within roughly two weeks of it showing up, not by the next monthly performance review.

Why This Exists

Amazon Business has been pushing hard on reliability for its B2B buyers, who tend to be procurement teams, office managers, and facilities staff ordering on a schedule tied to when someone is actually there to sign for a delivery or move it to a loading dock. A consumer can leave a package on a porch. A business customer often can't, and a delivery outside business hours effectively becomes a failed delivery from their side even if the carrier's tracking marks it complete.

What Happens If You Fall Below 90%

Between now and September 30, this is visibility only. The metric is live in Seller Central so you can see where you stand, but nothing is enforced yet. From September 30 onward, falling below 90% puts you in a warning state. If you're still below the line by October 30, Amazon deactivates your seller-fulfilled offers for Amazon Business customers. Your listings stay live for regular retail buyers; you just stop being eligible to sell to the B2B segment through that offer until performance recovers.

That's roughly eleven weeks from confirmation to hard enforcement, and about six weeks from the enforcement start to the deactivation trigger. It's not a lot of runway if you're currently shipping without much attention to what time of day packages land.

How to Fix a Low BHDR

• Switch to carriers with a track record of daytime, weekday delivery windows for commercial addresses. Some regional carriers and last-mile services default to evening or weekend routes that work fine for residential drops and badly for BHDR.
• Set accurate handling times per SKU rather than a blanket default. If a product actually takes two days to pack and ship, a one-day handling time promise forces rushed, less-predictable carrier choices that are more likely to land outside business hours.
• Turn on Shipping Settings Automation so Amazon can select carrier and service level based on live performance data instead of a static rule you set once and forgot about.
• Buy shipping labels through Amazon's Buy Shipping tool where possible. Amazon has better visibility into which of its integrated carrier options are actually hitting business-hour windows on your specific lanes, and Buy Shipping labels get preferential rate and tracking treatment.
• Pull your BHDR by ZIP code or region before assuming it's a single carrier problem. It's common for one regional lane, not the whole carrier relationship, to be dragging the average down.

Where Sellers Are Likely to Get Caught Out

The biggest risk isn't ignorance of the rule, most active B2B sellers will see the forum threads and the Seller Central banner. It's assuming that because delivery date performance looks fine, business hour performance is fine too. Those are two different metrics measuring two different things, and a seller who's used to watching on-time delivery rate has no reason to assume BHDR tracks the same way. Check the actual metric in Seller Central rather than inferring it from delivery date compliance.

The second common mistake is waiting until late September to look at this. With a 14-day rolling window and roughly six weeks between enforcement start and deactivation, a seller who starts diagnosing carrier issues in early October is working against a clock that's already most of the way through.

How TKL Helps

For clients selling into Amazon Business, we're pulling current BHDR now, before the September 30 enforcement date, and breaking it down by carrier, ship-from location, and destination region to find where deliveries are landing outside business hours. In most cases we've looked at, the problem sits in one or two shipping lanes rather than across the whole account, which makes it fixable without a wholesale carrier switch.

If you sell FBM to Amazon Business customers and haven't checked this metric yet, get in touch. We'll audit your current BHDR, identify the specific lanes or carriers dragging it down, and get handling times and shipping settings adjusted well before the October 30 deactivation trigger.