Amazon Returns and Claims: The Four Causes You Can Actually Control

A seller I know was convinced his Amazon returns were bad luck. We exported three months of returns and claims data and sorted it by reason. Nearly two thirds were size. Almost all of those were one product line.

That was not bad luck. That was a size chart problem wearing a disguise.

Don't worry, this is the most common shape this problem takes, and it is very fixable. Here are the four causes that produce most returns, and what to do about each.

First: get your own data, not averages

Before any fixes, spend twenty minutes on this. It changes what you work on.

Export your returns for the last 60 to 90 days. Sort them two ways:

1. By SKU. Almost always, a small number of products produce most of the returns.
2. By reason. Amazon records a reason code for each return.

What you are looking for is concentration. If one product line produces 40 percent of your returns, that is where all your effort should go. Fixing your whole catalog at once is what makes people give up.

The sellers who actually move their return rate pick their worst three SKUs and fix only those. The ones who try to fix everything usually fix nothing.

Cause 1: size uncertainty, the biggest driver of Amazon returns

This is the biggest single cause in apparel, footwear and anything worn.

Here is the thing. "M, L, XL" tells a buyer nothing, because those letters mean different things across brands. The buyer is guessing, and a guess has maybe a 50 percent hit rate.

The fix, in order of impact:

1. Measure each variant properly. Chest, length, shoulder, sleeve for tops. Waist, hip, inseam for bottoms.
2. Publish both units. Chest 40 in (101 cm). Indian buyers use both, and forcing a conversion adds friction.
3. Put the measurements in a gallery image, not only in the description. This is the part most people get wrong. Most buyers shop on a phone and never scroll to the description, but they do swipe through images.
4. Describe the fit. "Relaxed fit, size up if you prefer loose" prevents more returns than any chart.

Build that measurement graphic once per product line and run it through the Product Image Resizer so it matches your other gallery images exactly.

Cause 2: colour did not match

The second biggest, and largely self-inflicted.

A heavily edited photo with saturation pushed up converts better and returns harder. The buyer receives something duller than the screen promised and feels misled.

The fix is mostly about lighting, not editing:

• Shoot in indirect daylight, window to the side
• Turn off the room's tube lights. Mixing daylight with fluorescent creates a colour cast that shifts fabric colour noticeably
• Leave the saturation slider alone
• If a colour is genuinely hard to photograph (deep maroons and navys are the usual culprits), say so in the description: "Colour may appear slightly lighter on some screens"

That last line costs nothing and sets expectations honestly. I would rather have a slightly flat photo and a customer who keeps the item.

Cause 3: damage in transit

This one produces returns and claims, which makes it more expensive than the others.

Most transit damage is not a dramatic crushing impact. It is the item shifting inside the parcel for two days.

The fix:

• Remove void space. Fill gaps with paper or bubble wrap.
• The shake test. Pick up the sealed parcel and shake it gently near your ear. If you can hear or feel movement, add filler. It takes two seconds per parcel.
• Box anything rigid or fragile. A courier bag gives essentially no protection against a corner impact. Mugs, frames, glass, electronics: box, always.
• Tape the full opening, not two corner strips. This also gives you something concrete to point at if a pilferage claim is raised.

There is a cost consideration here worth knowing. More filler means a bigger parcel, and couriers bill on chargeable weight, which is whichever is greater of actual and volumetric weight. The Volumetric Weight Calculator lets you check whether your protective packaging is pushing you into a higher weight slab, so you can find the balance rather than guessing.

Cause 4: the buyer could not reach you quickly

This one is underrated and it is the cheapest to fix.

A buyer with a question has two options: contact you, or return the item. If contacting you feels slow or uncertain, they return it. If a response comes quickly, a surprising number of potential returns turn into resolved questions.

The fix:

• Respond to buyer messages fast. Amazon sets response-time expectations for sellers and surfaces them in Seller Central. Treat that target as a floor, not a goal.
• Answer the questions on the listing itself. If three buyers have asked the same thing, put the answer in the bullet points. Every question asked is a question that stopped someone else from buying.
• Include a support card in the parcel. A small card with a clear "message us if anything is not right" gives the buyer a cheaper option than a return. The Thank You Card Maker generates these with a working QR code.

One honest caveat I will keep repeating: marketplace rules on packaging inserts differ and change, and steering buyers off-platform is generally not permitted. A support contact for order issues is a different thing from a sales pitch. Check the current Amazon insert policy before printing in bulk.

About A-to-z claims specifically

A claim is usually the end of a chain that started earlier, not a random event.

The chain typically runs: buyer has a problem, buyer contacts seller, response is slow or unhelpful, buyer escalates.

So the practical defences are the same ones above, applied earlier in the chain. Respond quickly. Resolve rather than argue. If you are clearly in the wrong, fixing it immediately is almost always cheaper than defending it.

Document what you shipped. Photographs of packed parcels, and your own copy of the invoice and label PDF, give you something factual if a condition dispute arises.

A fix list you can work through

Here is what I would do, in this order:

1. Export 90 days of returns. Sort by SKU and by reason. (20 minutes)
2. Identify your worst three SKUs. (5 minutes)
3. For those three: add real measurements as a gallery image. (1 hour)
4. Reshoot their main photo in daylight with tube lights off, no saturation boost. (1 hour)
5. Add the shake test to your packing routine, permanently. (free)
6. Print support cards. (30 minutes)
7. Re-export returns after 45 days and compare the same three SKUs.

Step 7 is the one that makes this a system rather than a one-off. Without a re-measure you will never know which change worked.

My honest take

Some returns are simply the cost of selling online, and chasing zero will make you miserable. A buyer who changed their mind is not a problem you can engineer away.

But the four causes above are not "customers being difficult". They are information gaps, and information gaps are yours to close.

Start with the measurements. In my experience it is the single highest-return hour of work available to any apparel seller on Amazon, and it costs nothing but a tape measure and an afternoon.