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Winning Chargeback Disputes With a Better Evidence Packet
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En resumen:
- Winning chargeback disputes takes evidence that answers the exact claim and a packet the issuer can read quickly.
- Stripe caps combined evidence at 4.5 MB, and Mastercard evidence at 19 pages.
- Shopify Payments accepts PDF, JPEG and PNG files up to 2 MB each and 4 MB combined.
- Banks do not open links, audio or video, so add screenshots instead.
- Most platforms allow one submission, so finish the packet before the deadline.
Winning chargeback disputes depends on two things: evidence that answers the cardholder's exact claim, and a response packet the issuer can read quickly. A strong case can still lose if the file is too large, hard to read, or full of material the bank will not open.
This page covers the packet itself:
- File formats and size limits by processor and card network.
- How to order, label and trim evidence so an analyst reads it.
- The packet mistakes that get a response ignored or rejected.
For the wider strategy, such as which cases to fight and how the cycle runs, start with our chargeback dispute strategy handbook. To see where to click on each platform, use our guide on how to dispute a chargeback on Stripe, PayPal, Shopify, Adyen and Square.
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What Is a Chargeback Dispute Response Packet?
A chargeback dispute response packet is the set of files and data you send through your processor to contest a chargeback. The issuer's analyst uses it to decide whether the cardholder's claim holds up. This step is called chargeback representment.
A complete packet usually has three parts:
- A short cover summary that states your argument in a few sentences. Our chargeback response letter guide has a template.
- Exhibits that prove each point, such as delivery scans, login logs or signed terms. Our guide to compelling evidence explains what counts.
- Transaction data fields your processor sends with the case, such as AVS and CVV results, IP address and shipping details.
Every part should point at the reason code. Merchants who win chargeback disputes keep the packet narrow. A chargeback dispute is not a place to tell your whole story. It is a place to answer one claim.
Evidence File Limits by Processor and Card Network
Packet rules apply to all chargeback disputes, whatever the reason code. Processors and networks cap file size, file count and pages. Go over a limit and the scheme can reject the file, or your processor may not let you submit at all. These are the published rules as of October 2026.
4.5 MB Stripe combined evidence limit | 19 pages Mastercard evidence page cap (Stripe, Checkout.com) | 2 MB Shopify Payments limit per evidence file | 1 chance Stripe lets you submit a response once |
Sources: Stripe dispute documentation, Shopify Help Center, Checkout.com evidence file requirements.
| Processor or network | Formats | Size limits | Page and file rules |
|---|---|---|---|
| Stripe | Uploads per evidence type (combine items of one type into one file) | 4.5 MB combined | Mastercard evidence capped at 19 pages combined; one file per evidence type |
| Shopify Pagos | PDF (PDF/A, no portfolios), JPEG, PNG | 2 MB per file, 4 MB combined | Each PDF under 50 pages; one file per evidence type |
| Adyen | PDF, JPG or TIFF | Per scheme guidelines | No sensitive data such as full card numbers, passport copies or tax records |
| Visa (via Checkout.com) | 10 MB total | 150 to 300 DPI; text must stay legible when zoomed | |
| Mastercard and Maestro (via Checkout.com) | Not specified | 14.5 MB total | Maximum 19 pages; extra pages billed at 1 EUR each |
| American Express (via Checkout.com) | PDF, JPG, TIFF, DOC, DOCX | 5 MB per file, 25 MB total | Up to 5 files and 20 pages |
| Discover and Diners (via Checkout.com) | Not specified | 3 MB total | No page limit listed |
Limits change, so confirm them in your processor's dashboard before you upload. Adyen's dispute documentation also asks merchants to keep personal data out of defense files. Checkout.com merchants can use the scheme table above directly.
How to Build an Evidence Packet Issuers Can Read in Minutes
Analysts review many chargeback disputes a day. Make your point easy to find. This order works for most reason codes:
1 | Read the claim, not just the code Open the issuer's claim documents in your dashboard. Note the exact complaint, such as "never arrived" or "cancelled in March". |
2 | Write a one-page cover summary State the order, the claim and your rebuttal in plain words. List each exhibit by number. |
3 | Map every exhibit to the claim Keep only files that prove a point in your summary. Drop anything that does not. |
4 | Label, crop and highlight Name files by evidence type. Crop screenshots to the useful part and highlight the key line, such as the delivery date. |
5 | Check size, pages and format Compress to your processor's limits. Merge files of the same type into one PDF. |
6 | Submit once, before the deadline Most platforms do not let you add files later. A late response is an automatic loss. |
Deadlines differ by platform and network. Our chargeback time limit guide lists them in one table.
Readability Rules for the Packet Itself
A readable packet wins more often than a long one. Follow these rules:
- Lead with the conclusion. The first line should say why the charge is valid.
- Use one order ID everywhere. Match it across the summary, invoice and tracking page.
- Show dates with time zones. Delivery and login times should line up with the claim timeline.
- Keep scans sharp. Visa files should be 150 to 300 DPI so text stays legible.
- Skip jargon. Write "the customer logged in 14 times after delivery," not internal system codes.
- Explain any mismatch. If billing and shipping addresses differ, say why, for example a gift order.
Common Rejection Causes Inside the Packet
Many reasons merchants lose chargeback disputes come down to the packet, not the facts. These are the most common:
| Packet problem | Why it hurts | Corregir |
|---|---|---|
| Files over the size or page limit | Schemes may reject the file, and pages past the cap may not be read | Compress images, trim pages, merge by evidence type |
| Links to tracking pages, videos or audio | Stripe says banks will not review external content or media files | Paste a screenshot of the tracking result instead |
| Evidence that ignores the reason code | The analyst cannot connect it to the claim | Match each exhibit to the claim in your cover summary |
| Blurry or uncropped screenshots | Key lines are unreadable | Crop to the relevant part and highlight it |
| No cover summary | The analyst has to build your argument for you | Add a one-page summary that lists exhibits |
| Sensitive data in files | Adyen asks merchants to remove card numbers, ID copies and tax records | Mask card numbers and remove personal documents |
| Late or incomplete submission | A missed deadline is an automatic loss, and most platforms allow one submission | Track due dates and submit only when the packet is complete |
Evidence Checklist by Dispute Type
The right exhibits depend on the claim. For a full reason-code matrix, see how to tailor compelling evidence to each chargeback reason code.
Fraud or unauthorized claims
- Device ID, IP address and account login history for the order.
- For Visa, check Visa Compelling Evidence 3.0 eligibility: two prior undisputed transactions from the same customer, 120 to 365 days old, with matching data such as IP address or device ID.
- Signs of friendly fraud, such as the cardholder using the product after the dispute date.
Item not received or not as described
- Carrier tracking that shows delivery to the address on the order, with a signature for high-value items.
- The product page and photos as they looked at the time of purchase.
- Customer messages and your return policy, with proof it was shown at checkout.
Subscription, cancellation and credit not processed
- Terms of service and cancellation policy, with proof the customer accepted them.
- Usage or login records after the claimed cancellation date.
- Refund records, or a short note on why no refund was owed.
To see which internal systems hold each item, use our chargeback evidence source map.
Before and After the Packet: Prevention, Escalation and Partners
The packet is one step in a longer chargeback dispute process. A few habits before and after it help you win chargeback disputes more often.
1. Prevent Chargebacks in the First Place
Clear refund policies, accurate product pages and visible billing names stop many disputes. Address verification and 3D Secure help block stolen-card orders. Chargeback alerts let you refund a disputed order before it becomes a chargeback, which also keeps it out of your ratio.
2. Respond to Chargeback Disputes on Time
Build a timeline of the order, collect receipts and shipping records, and write in a firm, professional tone. Submit before the deadline. A missed deadline means you lose, no matter how good the evidence is.
3. Representación y arbitraje para resolver disputas
Representment is your first response with evidence. If the issuer rejects it, the case can move to pre-arbitration and then arbitration, where the card network decides. Arbitration carries a fee, for example $600 at Visa as of 2026, usually paid by the losing side. Weigh it against the order value.
4. Work With Payment Processors and Issuing Banks
Your processor routes the packet to the issuing bank, and its dashboard often shows extra claim details. Ask your processor for the issuer's documents when the reason code is unclear.
5. Work With a Chargeback and Dispute Management Company
A chargeback dispute management partner can build and format packets at scale. Chargeflow Automation gathers evidence from your store, payment and support tools, formats it to each card scheme's rules and submits it before the deadline.
Preguntas frecuentes
How do you win a chargeback dispute as a merchant?
To win chargeback disputes as a merchant, send evidence that answers the cardholder's specific claim, in a packet the issuer can read, before your processor's deadline. That is how to win a chargeback dispute on any platform. Match each exhibit to the reason code, keep files inside size and page limits, and add a short cover summary.
What are the chances of winning a chargeback dispute?
The chances of winning a chargeback dispute depend on the reason code, your evidence and how you count wins. There is no single benchmark that fits every merchant. Our guide to chargeback win rates explains how to measure yours.
How do you fight a chargeback as a seller?
To fight a chargeback as a seller, open the case in your processor's dashboard, read the claim, and choose to counter it. Then upload evidence that answers the claim and submit before the due date. The steps for how to fight chargebacks are the same for small and large chargeback disputes; only the evidence changes.
What file format should chargeback evidence be in?
Chargeback evidence is safest as PDF, with JPEG or PNG for images. Shopify Payments accepts PDF, JPEG and PNG up to 2 MB per file. Adyen accepts PDF, JPG and TIFF. Check your processor's limits before you upload.
Can I add more evidence after submitting a chargeback response?
Usually not. Stripe allows one submission and you cannot edit it. Shopify Payments lets you edit until the due date, unless you click Submit now. Prepare the full packet before you send it.
Should I include tracking links in chargeback evidence?
No. Banks do not click links in chargeback evidence. Stripe says issuers will not review external content, audio or video. Add a screenshot of the tracking result that shows the delivery date and address instead.
Package the Proof, Then Let the Facts Win
Good evidence only helps if the analyst can read it. That is the core of how to win chargebacks at scale. Keep packets short, labelled and inside each processor's limits, and answer the claim on page one. If you lose anyway, here is what happens if you lose a chargeback and how to decide on next steps.
Want packets built for you? Chargeflow assembles scheme-compliant evidence for every case, and you only pay when you win. See Chargeflow pricing.
Recover Chargebacks Without the Paperwork
Chargeflow Automation builds and submits evidence for the chargebacks that still arrive.
Contracargos?
Ya no es problema tuyo.
Recupera cuatro veces más Contracargos y prevención , hasta un 90 % de las entradas, gracias a IA y a una red global de 20 000 comercios.
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