A chargeback is a forced reversal of a card payment that the customer's bank initiates when they dispute the charge, and fighting it back is called representment. You win by responding fast, inside your processor's deadline, with compelling evidence that the transaction was legitimate, like proof of delivery, your signed terms, and your published refund policy.
What a chargeback is, and why it stings
A chargeback is a forced reversal of a card transaction. The customer goes to the bank that issued their card, disputes the charge, and the issuer pulls the money back out of your account. It is different from a refund, which you grant directly. A chargeback happens to you, not through you.
The common reasons are that the customer says they never received the product or service, the item was not as described, or the charge was unauthorized, meaning fraud. The painful part is that you can lose the money, lose the product, and pay a chargeback fee on top, often somewhere from 15 to 100 dollars per case. Lose enough of them and your chargeback ratio climbs toward the 1 percent line that puts your whole account at risk.
That account risk is the real stakes. Excessive chargebacks are a leading reason processors terminate merchants and report them to the MATCH list, covered in What Is the MATCH List, and How Do I Avoid or Get Off It. Winning disputes and preventing them is account survival, not just cash recovery.
Reason codes and what they tell you
Every chargeback arrives with a reason code from the card brand, and the code tells you what story the customer told their bank and therefore what evidence you need. The codes group into a few families.
Fraud disputes claim the cardholder did not authorize the charge. Authorization disputes claim the transaction was processed without proper approval. Processing-error disputes claim something was wrong with how the charge was entered, like a duplicate or an incorrect amount. Consumer disputes are the big one for most businesses: merchandise or services not received, item not as described or defective, a canceled recurring charge, or a credit that was promised but not processed.
Read the code first. A fraud dispute is won with proof the real cardholder made and received the purchase. A not-received dispute is won with tracking and delivery confirmation. A not-as-described dispute is won with your listing, your terms, and your refund policy. Matching the evidence to the code is half the battle.
The filing window: 120 days, sometimes 540
Cardholders generally have up to 120 days from the transaction or the expected delivery date to file a dispute. That alone means you stay exposed for months after a sale closes, which surprises owners who assume a completed transaction is final.
For certain reason codes the window stretches much further. When goods or services are expected well after the purchase date, like a deposit on something delivered months later, or when a promised credit was never processed, the dispute can be filed up to 120 days from the expected delivery or credit date, not to exceed 540 calendar days from the original transaction. So the practical takeaway is that you can be disputed well over a year after the sale on certain claims.
This long tail is exactly why your records, receipts, delivery proof, and signed terms need to live somewhere you can retrieve them a year later, not just until the next batch settles.
Representment: the step-by-step playbook
Fighting a chargeback is called representment, because you re-present the transaction to the issuer with evidence. Here is the order of operations.
Step one, read the notice the day it arrives and note the reason code and your response deadline. The official merchant response window is often 30 days per phase, but acquirers and processors impose their own earlier cutoffs, so in practice you may have only 5 to 10 days. Treat it as urgent.
Step two, decide whether to fight. If the chargeback is legitimate, accept it and refund, because contesting a valid dispute wastes time and can still cost you fees. If it is illegitimate, move to step three.
Step three, build a rebuttal packet matched to the reason code: a clear cover letter explaining what happened, the transaction record, proof of delivery or service, the customer's signed or clicked agreement to your terms, your published refund policy, AVS and CVV results, and any customer communication showing they received what they paid for.
Step four, submit through your processor before the deadline and keep a copy of everything. Step five, if the issuer escalates to pre-arbitration or arbitration, weigh the additional fees against the amount at stake before continuing, because arbitration carries its own costs.
The evidence that actually wins
Compelling evidence is specific, dated, and tied to the exact transaction. For a not-received dispute, that is a tracking number with delivery confirmation to the cardholder's address. For a fraud dispute, that is matching AVS and CVV, the IP and device on the order, and ideally proof the buyer used the goods. For a not-as-described or canceled-service dispute, that is your product description, your terms and conditions, and your refund and cancellation policy shown at the point of sale.
This is why written policies are not paperwork for its own sake. Your published refund policy is frequently the single piece of evidence that wins or loses a dispute, which is the whole point of Why Your Business Needs Written Refund Policies and Terms. Card brand rules also require those terms to be disclosed at checkout, so disclosing them clearly both prevents disputes and arms you for the ones that come anyway.
Be realistic, too. Industry data shows merchants win only a minority of the disputes they fight, so prevention pays more than any single win. Clear billing descriptors so customers recognize the charge, fast support so they call you instead of their bank, and prompt refunds when you are in the wrong all keep your ratio down.
Where the right processor changes the game
Some processors leave you to fight chargebacks alone, and a few still make you fax documents into a void. That is a deliberate friction that costs you winnable cases. The right setup gives you real chargeback tools and representment support so you are not navigating reason codes and deadlines by yourself.
North includes chargeback management on every plan and gives you the tools and representment support to fight illegitimate disputes, rather than leaving you to paper a fax machine. I help you build the evidence routine, the descriptors, the delivery records, the disclosed terms, so fewer disputes start and more of the ones you fight come back your way.
Send me your last statement and I will show you what your current processor is and is not doing for you on chargebacks, free. You can also explore the effective-rate and comparison tools on the rates page to see the full picture of what you are paying. Book a free statement review and let's look together. This article is general education, not legal advice on any specific dispute.
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