UK OTDR Rule (Starts 16 Sept 2025): Keep 90% On-Time Delivery for FBM | AMZ Sellers Attorney®

Amazon UK’s New 90% OTDR Requirement for FBM Starts 16 September 2025

Amazon UK has announced a performance change: starting 16 September 2025, sellers who fulfil their own orders (FBM / Seller-Fulfilled) must maintain a minimum 90% On-time Delivery Rate (OTDR). If you ship without FBA, this rule directly affects your account health, Buy Box eligibility, and future enforcement risk.

Need help fast? If you’re below threshold or received a performance warning, request a Free Consultation →

Further information: Order Defect Rate & Delivery Performance Issues

What Is OTDR and Why It Matters

On-time Delivery Rate (OTDR) measures the percentage of your delivered orders that arrive by (or before) the buyer-facing promised date shown at checkout. It’s different from Late Shipment Rate (which looks at dispatch timing) and can penalise orders that were shipped on time but arrived late because of carrier delays or overly aggressive promises.

Typical OTDR Drivers

• Delivery promises set too tight for your carriers or warehouse cut-offs
• Carrier service or postcode coverage mismatches
• Bank holidays / weekend delivery assumptions
• Weather or strike disruptions without dynamic promises

Why 90% Matters

• Falling below 90% can trigger performance warnings and Buy Box loss
• Chronic misses risk account reviews or selling limitations
• SFP/FBM catalog may be suppressed in peak periods

How to Calculate & Improve OTDR

1. Audit delivery promises. Check your current handling time, cut-off time, and the transit tables/services mapped to each ship option. Build in realistic buffers for remote postcodes and bank holidays.
2. Match service to promise. If you promise 1–2 business days, use services that actually scan and deliver in that window consistently (e.g., tracked 24/48 equivalents with reliable first scan).
3. Tune order cut-offs. Many sellers push a 2–3pm cut-off; move to noon if your pick/pack hand-off slips. Earlier cut-offs increase OTDR stability.
4. Weekend logic. Make sure Saturday/Sunday promises reflect your actual warehouse and carrier operations (collections, depots, and delivery availability).
5. Use tracked services with delivery scans. Tracked confirmation helps Amazon recognise on-time arrivals and reduces disputes.
6. Granular postcode rules. Apply slower promises to islands, Highlands, and remote postcodes; don’t let a single slow lane tank your whole metric.

Disruptions & Exceptions (What You Can Control)

• Carrier outages or strikes: Switch services temporarily or relax promises during the event. Update your shipping templates immediately.
• Severe weather / force majeure: Proactively message buyers; consider refunds or goodwill gestures to avoid negative feedback that compounds risk.
• Pre-peak planning: In Q4 and Prime events, extend promises by 1 day if your carriers historically slip—protecting OTDR is often worth the extra day.

Video: OTDR 90%—What UK FBM Sellers Need to Change Now

Appeals & Mitigation (If You’re Below 90%)

• Fix first, then appeal: Update promises, switch services, document carrier SLAs, and show improved week-over-week metrics.
• Evidence pack: Provide shipping template screenshots, carrier performance reports, and before/after delivery-promise settings.
• Plan of Action format: Root cause → Immediate corrections → Long-term prevention (with owners, dates, and KPIs).
• Messaging: Be factual and concise; avoid blaming buyers or Amazon—focus on controls you implemented.

Need an attorney-supervised Plan of Action? We help UK sellers raise OTDR, document fixes, and win reinstatement: Request a Free Consultation →

FAQ (Tap to expand)

What is Amazon UK’s OTDR requirement for FBM?

From 16 Sept 2025, sellers who fulfil orders themselves must keep an On-time Delivery Rate of at least 90% to maintain good account health and Buy Box competitiveness.

How is OTDR different from Late Shipment Rate?

Late Shipment Rate measures when you dispatch after the handling-time promise; OTDR measures if the package arrives by the buyer-facing delivery promise.

What causes low OTDR?

Over-tight delivery promises, carrier delays, inaccurate cut-off times, weekend/holiday mismatches, remote postcodes, and untracked services without reliable scans.

How can I quickly raise my OTDR above 90%?

Relax delivery promises by a day where needed, move your order cut-off earlier, switch to faster or more reliable tracked services, and set postcode-specific rules.

Does using tracked delivery help OTDR?

Yes. Tracked services provide delivery scans that can validate on-time arrival and reduce disputes, improving metric accuracy.

Will bank holidays and strikes count against me?

If promises aren’t adjusted, yes. Update shipping templates during disruptions so promises reflect realistic delivery dates.

What should an appeal include if I’m under 90%?

Provide a short Plan of Action with root cause, immediate fixes, and prevention, plus dated evidence: shipping settings, carrier SLAs, and improved trend screenshots.

Can AMZ Sellers Attorney® help with UK performance actions?

Yes. We draft POAs, structure evidence, and advise on operational controls to restore Buy Box eligibility and reduce future risk. Free Consultation.