Customer return lost in the post: who bears the loss?

The customer says they posted the return a week ago. You have nothing. No parcel, no scan you can find, and a refund you have promised to send "once it arrives". They have stopped being patient, and the next message you get is from their bank.

A customer return lost in the post is a particularly awkward problem, because both sides can be telling the truth. The customer did send it. You did not get it. And the card network does not care whose fault that is: it sees a customer who paid, returned the goods, and has no money back. This guide explains who bears the loss, what Australia Post's terms and the ACCC's guidance say, when to refund before the parcel turns up, and how to set up a returns process that does not leave you holding an unwinnable dispute.

This guide is for you if:

A customer says they have returned an order and you have not received it, and a refund is outstanding.
You hold refunds until returns arrive and have had "credit not processed" disputes as a result.
You want a returns policy and process that protects you without punishing honest customers.

Last updated: 9 October 2026. Written by the ChargeFix team. Reviewed against sources on 9 October 2026.

The 30-second answer (TL;DR)

A customer return lost in the post usually becomes a "credit not processed" dispute, where the customer says they returned the goods and have not been refunded.
Shopify's suggested evidence for that reason is your refund and return policies, proof the customer was informed, emails, an explanation of why they were not entitled to a refund, or proof of an earlier refund.
Refunds generally cannot be issued after a chargeback, but can for an inquiry. A full refund ends an inquiry, and a partial refund does not.
The ACCC says that for a confirmed fault you must reimburse reasonable return costs, and that change of mind is not covered by the consumer guarantees. If you offer a change-of-mind policy, you must honour it.
Australia Post's Returns Portal terms say it uses reasonable care but does not guarantee delivery times, excludes indirect or consequential loss, and does not exclude Australian Consumer Law rights.
We could not verify who bears the legal risk of a return lost in the post. Do not assume it is the customer's.
The cheapest fix is a prepaid, tracked return label and a rule that you refund on the first carrier scan for faulty goods.

Quick note: A return is two parcels in one problem. There is the goods on their way back to you, and there is the money on its way to the customer. If you tie the second to the first, a lost parcel freezes the refund. That is when the bank steps in.

The lost return at a glance

Question	Short answer
What dispute reason will it be?	Usually "Credit not processed"
What does Shopify suggest sending?	Refund and return policies, proof the customer was informed, emails, an explanation, or proof of an earlier refund
Can you refund after a chargeback?	Generally no. Yes for an inquiry
Who bears the loss?	Not verified. Depends on terms, the label and the facts
Best prevention	Prepaid tracked label, clear policy, refund trigger on first scan for faults

What is a customer return lost in the post, and why does it matter?

A customer return lost in the post is a returned parcel that the customer sent to you and that never arrives. Tracking may stop partway, the label may never have been scanned, or the customer may have no proof of postage at all.

It looks like a delivery problem, but it behaves like a refund problem. The customer has done what they were asked to do. The goods are gone from their hands. They expect their money back, and the longer it takes, the more the claim looks like "you have my money and I have no product".

Why does it become a chargeback so quickly?

Three reasons.

The customer feels they have already kept their side. They returned the item. Anything after that is your delay.

There is nothing for them to do. They cannot make the parcel appear. The only lever they have is their bank.

The reason fits. "Credit not processed" is one of Shopify's eight dispute reasons, and a customer who is waiting for a refund fits it neatly.

What does Shopify suggest for a credit not processed dispute?

Shopify's chargeback reasons page suggests, for credit not processed, that you provide:

your refund and return policies
proof the customer was informed of them
emails with the customer
an explanation of why they were not entitled to a refund, or proof of an earlier refund

The page also notes that refunds generally cannot be issued after a chargeback but can be issued for an inquiry.

That last point drives your decisions. If the dispute is still an inquiry, you can refund and end it. Shopify says a full refund ends an inquiry, while a partial refund does not. If it is an open chargeback, an open chargeback cannot be refunded, so you respond with evidence or accept. Our guide to chargeback vs inquiry explains why the type matters.

What is your evidence when the parcel is lost?

Your evidence is usually thin on the one fact that matters: you cannot prove you received the return, because you did not. What you can show:

Your return policy, as it stood on the order date, with a dated screenshot.
Proof the customer was told, such as the policy link at checkout and in the order confirmation.
The return authorisation you gave the customer, with the date and instructions.
Tracking for the return, if there was a label and it was scanned.
Every message about the return.
An honest explanation that you had not received the goods and why a refund had not been issued.

If the policy says refunds are issued on receipt, and the customer was told, your position is arguable. Whether a card issuer accepts it when the customer can show they posted the return is another matter. We could not verify how issuers weigh these cases.

Who bears the loss when a customer return is lost in the post?

We looked for a clear answer and did not find one in the sources we reviewed. Here is what we did find.

What the ACCC says

The ACCC's repair, replace, refund, cancel page says:

A failed consumer guarantee means you must offer a repair, replacement or refund, and you cannot send the customer to the manufacturer.
For a major problem, the customer chooses a refund or replacement, with no deduction for use and the refund going to the original payment method.
For a minor problem, you must repair free. A refund or replacement is not required, though you may offer one.
Change of mind is not covered by the guarantees, but if you offer a change-of-mind policy, you must honour it.
Customers do not need the original packaging, and you may ask for proof of purchase.
You must pay collection for bulky items, and reimburse reasonable return costs if a fault is confirmed. If no fault is found, you may charge collection and inspection costs, with a reasonable estimate given in advance.
"No refund" signs and terms do not override consumer rights, and relying on them for faulty goods is illegal.

The page does not address who bears the risk of the goods being lost on their way back to you. It does tell you that for a confirmed fault, return costs are yours. Many people read that as pointing the same way on a lost return, but we have not verified that, so do not treat it as settled.

What Australia Post's Returns Portal terms say

Australia Post's Returns Portal terms of use say:

Australia Post uses reasonable care and skill but does not guarantee delivery timeframes.
Lost or damaged parcels may qualify for compensation, depending on whether the customer complied with the terms and the law.
Indirect or consequential losses, such as lost profits, are excluded unless caused by gross negligence, fraud or wilful misconduct.
Rights under the Australian Consumer Law are not excluded.
The customer must pack parcels securely, and the service is for returning goods to the merchant that sent them.
The services are "generally suitable for sending items up to $100 in value".

These terms do not state a cover amount or claim process. They point to the compensation page. That page, for items sent within Australia, says the sender can claim for lost items, with included cover of up to A$100 plus a postage refund, Extra Cover up to A$5,000, a 6 month lodgement limit and a proof of lodgement requirement. In a returns situation the sender is the customer, which means the claim is theirs to make, unless a waiver changes who receives compensation.

The practical reading

If the customer used your prepaid label, you will often want to lodge or support a claim, because you chose the service and set the terms.
If the customer used their own postage, they hold the proof of lodgement, and they are the sender.
Either way, the customer's refund is likely to be your problem first, because the bank will treat it that way.

For a high-value return, take legal advice rather than relying on this reading.

Should you refund before the return arrives?

It depends on the reason for the return and the value.

Situation	Suggested approach	Why
Confirmed fault, major problem	Refund promptly, collect goods if practical	The customer is entitled to a remedy, and you must reimburse reasonable return costs
Not as described	Refund on proof of return or first scan	The customer has done what was asked
Change of mind, within your policy	Refund on receipt, as your policy states, but chase the carrier fast	You offered a policy, and you must honour it
Change of mind, outside your policy	No refund obligation	State this politely and early
High-value item, no tracking	Ask for proof of postage before releasing the refund	You need a trace
Low-value item	Consider refunding without waiting	The cost of a dispute exceeds the item

A rule that works for many stores

Refund on the first carrier scan for faulty or misdescribed goods, and on receipt for change-of-mind returns within policy. The first scan proves the customer posted the parcel, and it avoids the freeze where an honest customer waits weeks for money while a parcel wanders. You still carry the risk of a lost parcel, but you carry it either way once the customer disputes.

Illustration: wait for the parcel or refund on the first scan?

Assume a A$180 return and a A$25 dispute fee. Your time on a response is 45 minutes at A$40 an hour, so A$30. Suppose one return in 100 is lost, and half of the customers whose returns are lost go to their bank. These are made-up numbers.

Policy	What happens to the one lost return	Extra cost per lost return
Refund on receipt	The customer waits. Half of the time they dispute	0.5 × (A$25 fee + A$30 time) = A$27.50, plus a point in your chargeback rate half the time
Refund on first scan	The customer is refunded when the carrier first scans the parcel	A$0 in dispute costs

In both cases you repay the A$180, because a customer who returned goods and has no money back will usually get it from the bank in the end. The difference is the fee, your time and the effect on your rate. Against that, refunding on the first scan gives up some control over returns that were never actually sent, which we have not quantified. A claim on the carrier can recover part of the loss where the label was yours.

What does a good returns process look like?

1. A clear, findable refund policy

State what can be returned, by when, in what condition, who pays for return postage, and when the refund is issued. Keep dated copies. If you offer a change-of-mind policy, you must honour it, and your policy must not contradict consumer guarantees for faulty goods.

2. A return authorisation step

Give each return a reference number and instructions by email. The email is your proof the customer was informed.

Hi [name], your return for order [number] is approved. Reference: [number]. Please use the prepaid label attached, pack the item securely, and post it by [date]. We'll refund you [on the first carrier scan / when we receive it], and we'll email you the moment that happens. If you have any trouble, reply here.

3. A prepaid, tracked return label

A tracked label gives both of you a trace. Australia Post's Returns Portal terms say the service is generally suitable for items up to A$100, so for higher values consider extra cover or a more secure service. Check what your courier offers.

4. A refund trigger you can explain

Decide when the refund is issued, say so in the policy, and stick to it.

5. A check on the return after two weeks

If the parcel has not scanned or arrived, contact the customer and the carrier together.

6. A claim routine

Lodge a carrier claim where the label was yours, with proof of lodgement. Australia Post's page says to lodge within 6 months of posting.

What should your refund policy say about returns?

A refund policy is both a promise to customers and a piece of evidence. Write it so that an honest customer can follow it and a reviewer can read it in thirty seconds. Keep dated copies, because the version that applies is the one the customer saw on the order date.

A refund policy outline you can adapt

Faulty or not as described. If your order arrives faulty, damaged or not as described, contact us. Under the Australian Consumer Law you may be entitled to a repair, replacement or refund. We will reimburse reasonable return costs for a confirmed fault. Change of mind. You can return unused items in original condition within [number] days for a refund of the item price. [State who pays return postage.] How to return. Email us with your order number. We'll send an approval and a prepaid return label. Please pack the item securely. When we refund. For faulty or not-as-described items, we refund when the carrier first scans your return. For change-of-mind returns, we refund when we receive the item, and we'll chase the carrier if it is delayed. If your return goes missing. Tell us and keep your postage receipt. We'll investigate with the carrier and won't leave you out of pocket for a return you posted as instructed.

Check each line against consumer law. The ACCC says "no refund" terms do not override consumer rights, so do not write a blanket exclusion. We have not reviewed your products, so take advice if you sell anything unusual.

Illustration: a returns tracker

A simple tracker keeps lost returns from ageing quietly. Dates are assumed.

Return	Approved	Label scanned	Days since scan	Action
#3011	Mon 5 Oct	Wed 7 Oct	2	Wait
#3014	Tue 6 Oct	Thu 8 Oct	1	Wait
#3009	Mon 28 Sep	Wed 30 Sep	9	Contact customer and carrier
#3002	Mon 21 Sep	None	n/a	Ask for proof of postage

Check the tracker twice a week. A return that has not scanned in a week, or has not arrived two weeks after the last scan, is the one to chase. Act at that point, not when a bank notice arrives.

How do you design a return label that protects you?

The return label is the one piece of evidence both sides share. Treat it as a design problem.

Make it prepaid and tracked. A scan is the first proof the customer posted the parcel.
Put the return reference on the label, so you can match the parcel when it arrives.
Print clear instructions on the label or the email: pack securely, keep the receipt, post by a date.
Keep a copy of the label record with the order. It shows the service chosen and the date issued.
Match the service to the value. Australia Post's Returns Portal terms say its services are generally suitable for items up to about A$100, so for higher-value returns look at a service with stronger cover.
Use one return address, and test it by receiving a sample parcel before launch.

If the customer chose their own postage, ask for the receipt and the tracking number in your approval email. It makes any later claim, and any later conversation with the bank, much easier.

What should you say to the customer?

When the return hasn't arrived

Hi [name], I'm sorry for the wait. I can see your return for order [number] was posted on [date] and tracking last shows [status]. I've asked [carrier] to investigate. You've done your part, so rather than keep you waiting I'll [issue your refund of A$[amount] today / refund you once the carrier confirms]. I'll email you when it's done.

When there's no proof of postage

Hi [name], thanks for your patience. We haven't received your return for order [number], and we can't see a tracking record. Could you send a photo of your postage receipt, or the tracking number if you have it? Once we have it, we can ask the carrier to look into it and move your refund forward.

When the dispute has already opened

Hi [name], I can see your bank has queried this payment. I'd like to sort it out directly. [If an inquiry: I've refunded you in full today.] [If a chargeback: you can ask your bank to withdraw the dispute, and I'll confirm in writing that the matter is resolved.]

Keep the tone kind. Whatever you write may be read by the reviewer.

What if the customer is not being honest?

Some returns that "got lost" were never sent. Signals include no proof of postage, no tracking, a refusal to share details, and a history of refund claims. None of these proves anything alone, and an honest customer who threw away a receipt looks the same.

Ask neutral questions. Request the postage receipt, the tracking number and a photo of the package.
Look at the order history. Shopify includes the customer's prior orders and disputes.
Use the policy. If your policy requires proof of postage for high-value returns and the customer was told, say so.
Weigh the value. At low value, refunding is usually cheaper than investigating.

Do not accuse. A cool, factual cover note will do more for you than an angry one.

Worked scenarios: three lost returns

All figures and dates are assumed.

Scenario 1: the faulty item and the tracked label

A customer returns a faulty A$220 item on Tuesday 13 October 2026 using your prepaid label. Tracking shows lodged, then nothing. The goods are covered by consumer guarantees.

Move: refund on the first scan, because the customer is entitled to a remedy for a confirmed fault and you must reimburse reasonable return costs. Lodge a claim with the carrier for the lost return. Net cost is the refund less any cover, and you avoid a dispute worth A$245 with the fee.

Scenario 2: the change of mind and no tracking

A customer returns a A$90 item for change of mind within your policy, using their own postage without tracking. They say they posted it ten days ago. You have nothing.

Move: ask for proof of postage, politely. If they have it, consider refunding because the dispute would cost A$115 with the fee. If they cannot produce anything and the policy states refunds are issued on receipt and the customer was informed, you have an arguable position. Weigh it against the cost of fighting.

Scenario 3: the open chargeback

A customer returns a A$300 item. You hold the refund until it arrives. It does not arrive. The customer disputes the order as credit not processed, and the chargeback takes A$300 and a A$25 fee.

Move: you cannot refund an open chargeback. Respond with your policy, the return authorisation, tracking and messages, or accept. Be honest in your note that the goods had not arrived. If the customer can show they posted it, your pack is weak. Treat it as a lesson to refund on the first scan next time.

How do you build your response to a credit not processed dispute?

Use the same structure as any dispute pack, with the return story at its centre.

Cover note. One page: the order, the return authorisation, the dates, and why the refund was pending.
Policy evidence. Your refund and return policies, dated, plus proof the customer was shown them.
Return authorisation email. It shows the customer was told what to do and when the refund would be issued.
Tracking. Any scan for the return, or the absence of one.
Messages. Every message about the return and the refund.
Refund records. Shopify attaches refund records. If you refunded part, show the amounts and dates.

Files must be PDF, JPEG or PNG, up to 2 MB each and 4 MB in total, with one file per evidence type, and no links. See the chargeback evidence checklist and the deadline guide. The due date is usually 7 to 21 days after filing, in your store's timezone.

What's different for Australian merchants?

The Australian Consumer Law applies. The ACCC's guidance on consumer guarantees sets the baseline for faulty and misdescribed goods, and "no refund" terms do not override it.

Return costs may be yours under the Australian Consumer Law. For a confirmed fault you must reimburse reasonable return costs, and pay collection for bulky items. If no fault is found you may charge collection and inspection costs, with a reasonable estimate given in advance.

Australia Post's returns terms are specific. They exclude indirect and consequential loss, do not guarantee delivery times, and say the service suits items up to about A$100.

Customers have other routes. Consumer Affairs Victoria says customers can go to AFCA if their bank rejects a chargeback request, and CHOICE reports that a retailer can end up refunding through a chargeback even if it first refused.

Long cardholder windows. NAB gives cardholders up to 120 days for Visa and Mastercard disputes, varying by reason, and 210 days for eftpos. CHOICE reports the window can run from the expected delivery date, with an outer limit of 540 days for Visa.

Dates and money. Use A$ and full dates in cover notes, such as 13 October 2026.

Common mistakes

Holding every refund until the return label's parcel arrives

It freezes honest customers and invites disputes.

Having no return authorisation step

Without it you cannot show the customer was told what to do.

Using untracked returns on valuable items

You and the customer both lose the trace.

Treating "no refunds" as protection

The ACCC says relying on it for faulty goods is illegal.

Forgetting you can refund an inquiry

A full refund ends it. Do it before the chargeback stage.

Not claiming from the carrier

Where the label was yours, you may have a claim, with a 6 month limit.

Writing a refund policy that contradicts the Australian Consumer Law

Keep refund-on-receipt wording for change-of-mind returns, and treat faulty goods separately.

What we could not verify

Who bears the legal risk of a return lost in the post.
How a card issuer weighs a customer's proof of postage against your non-receipt.
Australia Post's Easy Returns terms. The document we opened was the Returns Portal terms, which do not state cover amounts or claim steps.
Whether refunding on the first carrier scan changes a carrier's willingness to pay a claim.
GST and BAS treatment of refunds. Ask your accountant.

If a decision depends on one of these, ask the carrier or a professional and keep the reply.

Frequently asked questions

Who is responsible if a customer's return is lost in the post?

We could not verify the legal position. In practice, the customer will look to you for the refund, and a bank will treat it the same way. If the label was yours, you may be able to claim from the carrier. Ask a professional for large amounts.

Do I have to refund before I receive the returned item?

Not always, but you often should. For a confirmed fault, the ACCC says the customer is entitled to a remedy and you must reimburse reasonable return costs. For change of mind within your policy, you may refund on receipt, as your policy states, but a long freeze invites disputes.

What is a credit not processed dispute?

It is a Shopify dispute reason where the customer says they were promised or are owed a refund and did not get it. Shopify suggests your refund and return policies, proof the customer was informed, emails, an explanation, or proof of an earlier refund.

Can I refund a customer after they have filed a chargeback?

Generally no. Shopify says refunds cannot be issued after a chargeback but can for an inquiry, and a full refund ends an inquiry. For an open chargeback, respond with evidence or accept. Ask the customer to withdraw if the matter is resolved.

What proof should I ask for when a customer says they posted the return?

Ask politely for the postage receipt, the tracking number and a photo of the packaging. Proof of postage also matters for any carrier claim, because Australia Post's compensation page says that without proof of lodgement no cover applies. Keep whatever the customer sends with the order.

Does Australia Post cover lost return parcels?

Its compensation page lists included cover of up to A$100 plus a postage refund for domestic parcels, with Extra Cover available, and a 6 month lodgement limit. Its Returns Portal terms exclude indirect and consequential loss and say the service is generally suitable for items up to A$100.

Can I charge the customer for return postage?

For a confirmed fault, the ACCC says you must reimburse reasonable return costs. For change of mind within your own policy you can set the terms, but state them clearly. If no fault is found, you may charge collection and inspection costs with a reasonable estimate given in advance.

How do I stop lost returns becoming chargebacks?

Use a prepaid, tracked return label, a return authorisation email, a clear refund policy, and a refund trigger such as the first carrier scan for faults. Reply to every customer message quickly, and refund an inquiry in full before it can become a chargeback.

Will a credit not processed dispute hurt my account?

Every dispute counts toward your Shopify chargeback rate, whether you win or lose. A high rate can lead to an account health notice, a payout reserve or NDRP enrolment, with a A$25 fee per auto-resolved dispute in Australia. A fast, fair returns process keeps disputes out of your rate.

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