A chargeback is a card payment that the customer's bank reverses and pulls back out of your account through your processor, whether you agree with it or not. You can fight one by answering the specific dispute reason with the right evidence before the deadline, and you can prevent most of them with a handful of counter habits, starting with reading the chip and printing your return policy on every receipt.
Visa calls these disputes and defines them as "the reversal of the value (or partial value) of a transaction by the card issuer to the acquirer." If you take cards at the register, on delivery, or against a charge account balance, they come with the territory, and the stores that handle them well are the ones that understand the process before the first notice lands.
It helps to separate a chargeback from a refund, because they feel similar and cost very differently. A refund is a credit you choose to issue, on your terms, when a customer brings back the screws or the paint doesn't cover the way they hoped. A chargeback is the bank reaching into your account on the customer's behalf, commonly with a dispute fee from your processor attached, and often without anyone calling you first. When a refund is legitimate, issuing it fast is usually the cheaper path, and Visa's Dispute Management Guide for Merchants (October 2026) says so directly: "If a refund is needed and legitimate, issue it as soon as possible... This can help avoid a formal dispute altogether."
How a chargeback moves through the system
The cast of characters is worth learning once, because every deadline and every response runs through them. The cardholder's bank is the issuer. Your bank or processor, the one that deposits your card sales, is the acquirer. When a customer disputes a charge, they contact the issuer, the issuer pulls the funds back through the acquirer, and your processor notifies you and collects your response. You never deal with the issuer directly, since everything you submit travels through your acquirer.
On the customer's side, the FTC's guide to disputing credit card charges explains that under the Fair Credit Billing Act, a cardholder disputing a billing error has to get a letter to the issuer within 60 days after the first bill showing the error was sent, and billing errors include unauthorized charges, wrong amounts, and items not delivered as agreed. Your side of the timeline is tighter and less forgiving. Visa's merchant guide puts it bluntly: "Each step in the dispute process has a strict deadline. If you or your acquirer misses the response window, the case may be automatically lost even if your evidence is strong." When a dispute notice arrives, find the response deadline before you read anything else, and confirm the timeline with your processor, because Mastercard, American Express, and Discover each run their own dispute programs with their own reason codes and dates.
The four Visa dispute categories
Visa groups every dispute into four categories, each with numbered conditions, and the condition on your notice tells you what you need to prove. Here they are translated into counter terms:
| Category | Code | What it covers | What it looks like at a supply store |
|---|---|---|---|
| Fraud | 10 | The cardholder says they didn't authorize or take part in the sale | A $389 chainsaw bought on a stolen card, or a phone order the cardholder says they never placed (10.4, Other Fraud, card-absent) |
| Authorization | 11 | The sale went through without a proper approval | A sale completed after a decline, or keyed through without authorization |
| Processing Errors | 12 | The sale was mishandled at the register or in settlement | A customer charged twice for the same box of screws (12.6, Duplicate Processing), or charged $1,200 instead of $120 (12.5, Incorrect Amount) |
| Consumer Disputes | 13 | The customer says the store didn't hold up its end | A delivery they say never arrived (13.1), a special order they say wasn't what was described (13.3), or a refund that never posted (13.6, Credit Not Processed) |
Most of what a hardware, paint, lumber, or feed store sees lives in categories 12 and 13, with the occasional fraud case when a chip gets skipped at the register. The condition matters because it decides what evidence counts, so match your response to the condition rather than sending everything in the filing cabinet.
What evidence wins
Visa's guide boils a strong response down to three tests. Your evidence should clearly link the transaction to the cardholder, show the cardholder took part in or benefited from the sale, and confirm the sale was processed, fulfilled, and billed on the agreed terms. A signed receipt, an invoice with the delivery address, or a pickup form with a signature and ID details are the kinds of documents that connect those dots.
The other half of the guidance surprises people: "Effective responses focus on relevance and clarity, not volume." Dumping forty pages of correspondence into a response does not help and can delay the review. Send the documents that answer the specific condition, make sure they're readable and in English, and tie them together with the invoice or sale number so the reviewer doesn't have to play detective. Visa is also explicit that internal notes and verbal explanations don't replace what the customer saw, and that a bare statement like "the item is as described" fails without documentation behind it.
How to fight a chargeback, step by step
- Find the deadline. Write the response date on the notice in marker before you do anything else.
- Read the condition and check your own records. If you already refunded the sale, the response is short: the date and amount of the refund, the transaction identifier, and the refund receipt linked to the disputed sale. A refund that posted a few days after the customer lost patience and called their bank is a common way a "credit not processed" dispute starts.
- Gather evidence that fits the condition. For a delivery dispute, that's proof of delivery with the full address matching the invoice and the delivery status, plus a recipient signature and a delivery photo if you have them. For an in-store pickup on a phone or online order, that's the signed pickup form or the ID details your counter staff recorded. For a not-as-described claim, that's the product description and terms the customer saw before buying, plus any repair, replacement, or refund you offered under your posted policy.
- Check whether the customer will withdraw. If the charge turns out to be legitimate (a spouse made the purchase, or the store name on the statement finally clicked), a dated email or signed statement from the cardholder, dated after the dispute started and saying they accept the charge, can resolve the case. Visa notes this isn't available for every condition, including authorization disputes.
- Submit through your acquirer, well before the deadline, and keep a copy. If the deadline is tomorrow and your evidence is thin, accepting the loss and fixing the habit that caused it is sometimes the right business call.
The chargebacks supply stores see most
The unrecognized charge. A homeowner sees "$54.99 DBR HOLDINGS LLC" on their statement and disputes it, not realizing DBR Holdings is your store's legal name. This is what the industry calls friendly fraud, a dispute against a purchase the customer made, and it's often preventable with a billing descriptor that matches the name on your sign and a phone number printed on the receipt. Your invoice and signed receipt usually answer it, but the hour spent responding is pure cost.
The duplicate charge. A terminal error makes it look like the first attempt failed, someone runs the card again without checking, and a $12.40 box of screws posts twice. That's 12.6, Duplicate Processing, and it's a hard one to win because the card was in fact charged twice. The fix is upstream: enter each sale once, and after any terminal error, confirm whether the first attempt posted before running it again.
The refund that never posted. A customer returns a tool, the cashier keys the refund, and the credit never settles. Visa says you can respond to this condition only if the credit was processed correctly and on time, or if no credit was due under your disclosed policy and the customer didn't meet its conditions. Prevention means stating refund eligibility and timing before the purchase and processing refunds promptly, which is why a clear, printed return policy earns its keep.
Not as described. A special order arrives and the customer swears it isn't what they asked for. If the goods matched the description and terms presented before purchase, or you offered repair, replacement, or refund under your disclosed policy, you can fight it, but only with paperwork. "My counter guy remembers the conversation" is not paperwork.
Delivered, but claimed not received. The feed delivery or the lumber drop lands at the job site, and the cardholder disputes it as 13.1, Merchandise Not Received. Visa wants proof of delivery showing the full address matching the invoice and the delivery status, and a recipient signature and delivery photo strengthen the case. If your drivers aren't collecting signatures and photos on big drops, this dispute is the reason to start.
Card-present fraud when the chip gets skipped. A customer buys a $389 chainsaw, the chip read fails, the cashier swipes instead, and the card turns out to be counterfeit. Under the EMV liability shift, when a chip card is swiped or key-entered instead of the chip being read, the merchant may be held financially responsible for certain fraud, so the receipt in your drawer won't carry the case the way it would on a consumer dispute. The rule at the register: when a chip is present, read the chip.
How to prevent chargebacks before they start
Most prevention is unglamorous counter discipline. Enter each sale only once and double-check the amount before completing it, since the gap between $120 and $1,200 is one distracted keystroke. Void incorrect receipts immediately and hand the customer the final, correct one. Settle transactions daily, deposit them within one to five days of the sale as Visa recommends, hold the charge on a shipped order until the goods go out, and tell customers when a delivery runs late. Process refunds as soon as they're approved, and when you spot an error, issue the reversal yourself instead of waiting for the customer to ask.
The rest is paper and signage. State your return and refund policy clearly at the time of sale and print it on the receipt, and collect signatures or acknowledgments on high-value sales and deliveries. Keep receipts, invoices, and correspondence linked by an order or invoice number so that when a dispute arrives, the evidence file nearly assembles itself. And make sure the name on the customer's statement matches the name on your door. None of this eliminates disputes, but it shrinks the pile, the same way good receiving habits shrink shrink. If card costs are on your mind while you tighten all this up, the state-by-state guide to credit card surcharging covers what you can pass through and where.
Where Rundoo fits
On Rundoo, credit, debit, ACH, and saved cards are taken in the same point of sale as the sale itself, and payments against a charge account balance tie back to the same sale and statement, so the payment and the ticket it paid for sit on one record when you need to pull them for a dispute. Voids, refunds, and price overrides can also require a manager's PIN at the register on top of role permissions, which puts a second set of eyes on the keystrokes that turn into duplicate and wrong-amount disputes. If you also run charge accounts, the guide to house account statements, aging, and finance charges pairs well with this one.
