Selling on Amazon gives you access to millions of customers, but it also comes with strict rules like the A-to-Z Guarantee. The goal of this program is simple: to protect customers who buy from third-party sellers. But in practice, it affects sellers’ policies, refunds, and even their account health.
This guide breaks down everything you need to know about the Amazon A to Z Guarantee.
What the Amazon A-to-Z Guarantee Really Is
The A to Z Guarantee is Amazon’s buyer protection policy for orders placed with third-party sellers who use Amazon’s marketplace. It ensures that customers receive the item they paid for in the condition and time promised, or they can get their money back. The cost of that refund is charged to you, the seller.
This guarantee applies to two main cases:
- Orders fulfilled by sellers (FBM)
- Orders fulfilled by Amazon (FBA)
It covers issues like:
- Late or missing deliveries
- Items not received at all
- Wrong or damaged products
- Poor product condition (used instead of new, missing parts, etc.)
- Refunds not processed after return
How the A-to-Z Claim Process Works
Here’s what happens from start to finish when a buyer raises an issue under the A-to-Z Guarantee:
Step 1: The Buyer Contacts You
Buyers are required to contact the seller first. They can message you through the “Contact Seller” option. You have 48 hours to respond and attempt to resolve the issue.
If you don’t respond within that time, the buyer can escalate the issue to Amazon.
Step 2: The Buyer Files a Claim
If the buyer isn’t satisfied or if you don’t respond, the buyer can submit an A-to-Z claim through their Amazon account.
The claim form asks for:
- Order details
- The reason for the claim
- Supporting information (like photos or tracking numbers)
Step 3: Amazon Reviews the Claim
Amazon then evaluates the claim. They’ll check tracking data, order notes, communication history, and your policies.
In most cases, Amazon gives the seller a chance to respond with evidence before making a decision.
You have 3 calendar days to reply with all the supporting evidence.
Step 4: Amazon Makes a Decision
After reviewing both sides, Amazon decides whether to approve or deny the claim.
If Amazon sides with the buyer, the refund is taken from your account. This will be recorded in your Order Defect Rate (ODR).
If Amazon sides with you, the claim is closed with no action against your metrics.
The Impact of A-to-Z Claims on Account Health
An A to Z claim can directly affect your Order Defect Rate (ODR).
Amazon calculates ODR as the percentage of orders that result in a defect, which includes:
- A-to-Z Guarantee claim (whether granted or not, if they’re filed)
- Negative feedback
- Chargebacks
Amazon expects sellers to maintain an ODR below 1%.
That means even a small number of claims can push your account into warning territory. That’s enough to trigger a performance notification or suspension risk.
Common Reasons for A-to-Z Claims (and How to Prevent Them)
Most A-to-Z claims come down to a few repeat issues. Here’s how to prevent them:
Late or Missing Deliveries
This is the number one reason for A-to-Z claims.
Buyers get frustrated when tracking doesn’t update or when deliveries take too long.
Here’s how to prevent it:
- Always upload valid tracking numbers within the expected timeframe.
- Use reliable carriers and ensure tracking shows delivery proof.
- Set realistic shipping times instead of overpromising.
- Use “Buy Shipping” through Amazon to get built-in protection.
If the tracking shows delivery and the buyer still claims non-receipt, you have proof to dispute the claim.
“Not as Described” Complaints
This happens when the product doesn’t match the listing photos, size, or details.
Here’s how to prevent it:
- Make sure your product images, dimensions, and descriptions are 100% accurate.
- Avoid exaggerated claims or vague descriptions.
- Keep packaging consistent, especially if you update your product version.
Product Damage or Defects
If items arrive broken or defective, buyers go straight to A-to-Z when sellers don’t act fast.
Here’s how to prevent it:
- Use sturdy, protective packaging (especially for glass or electronics).
- Test quality before shipping batches.
- Respond quickly and offer a replacement or a refund before the buyer escalates.
Poor Communication
Sellers who ignore buyer messages or respond slowly are more likely to face A-to-Z claims.
Here’s how to prevent it:
- Respond to every buyer message within 24 hours.
- Be polite, even when the buyer is wrong.
- Offer solutions and don’t argue.
Amazon’s system records all communication, and polite, timely responses can help your case if a dispute arises.
How to Dispute an Unfair A-to-Z Claim
Sometimes Amazon makes the wrong call. Maybe tracking shows the item was delivered, but the claim was still approved. You can dispute the decision.
Here’s how:
- Go to Performance → A-to-Z Guarantee Claims in Seller Central.
- Click Appeal Decision next to the claim.
- Provide additional details or documentation that support your side.
Examples of valid evidence include:
- Proof of delivery (with GPS or signature)
- Screenshots of buyer communication showing resolution
- Refund records
If your appeal is clear and backed with solid evidence, Amazon can reverse the decision and restore your funds.
Handling FBA vs. FBM Claims
FBA (Fulfilled by Amazon)
If you use FBA, Amazon handles fulfillment, shipping, and returns.
When an A-to-Z claim is filed on an FBA order, Amazon reviews it internally. If they’re at fault (like late delivery or damage), they’ll cover the cost.
FBM (Fulfilled by Merchant)
If you ship orders yourself, you’re responsible for every part of the process.
That means you’ll handle customer messages, refunds, and potential disputes.
Most A-to-Z claims happen in FBM accounts because sellers control fulfillment directly.
If you often face delivery-related claims, it might be worth shifting high-risk items to FBA for better protection.
What Happens After a Claim Is Closed
Once an A-to-Z claim is closed, one of two things happens:
- If you win, the funds remain in your account.
- If you lose, Amazon refunds the buyer and deducts the amount from your account balance.
If the claim affects your ODR, it may stay visible in your performance metrics for 60 days. After that, the impact fades if no new issues occur.
Keep records of every claim, even if resolved. Patterns (like repeated shipping issues or certain SKUs) can help you find and fix problems before they escalate again.
Final Thoughts
While sellers often see A-to-Z as a risk, it’s actually a system that protects both sides. Buyers feel safer purchasing from third-party sellers because of it and that trust helps the entire marketplace grow.
As long as you treat buyers fairly, document everything, and respond quickly, the A-to-Z Guarantee doesn’t have to hurt your business.
Running into constant A-to-Z claims or buyer disputes? Get the help of an Amazon agency. At Enso Brands, we help Amazon sellers simplify operations, improve customer satisfaction, and reduce account risks. Contact us today for more information about our services.
