Network
VisaCode
12.3Response window
30 calendar daysWin difficulty
MediumDispute type
Processing ErrorVisa 12.3 — Incorrect Currency: What It Is and How to Respond
Note: DCC disputes are winnable only with documented cardholder consent. If your system applied a currency conversion automatically without disclosure, accept the chargeback. An actual mismatch between authorisation currency and settlement currency is never defensible.
Visa 12.3 is filed when the cardholder claims the transaction was processed in a different currency than authorised — either without their knowledge or against their explicit selection. This often involves dynamic currency conversion (DCC) without clear consent, or an international merchant charging in a local currency when the cardholder expected to pay in their home currency.
The key issue in any 12.3 dispute is consent: did the cardholder explicitly authorise the currency used? If the answer is documented yes, you can contest. If the currency changed between authorisation and settlement, or DCC was applied silently, the dispute is almost certainly not winnable.
Common reasons you received this dispute
- 1Dynamic currency conversion (DCC) was applied without clear cardholder consent
- 2Multi-currency checkout setting was misconfigured and showed one currency but settled in another
- 3Cardholder selected one currency at checkout but was charged in a different currency
- 4Currency was changed between the authorisation and settlement stages
- 5Recurring billing continued in a currency different from the currency in the original agreement
Can you win this dispute?
Fight this dispute if...
- ✓You have clear evidence the cardholder consented to the specific currency — DCC disclosure was presented and the cardholder accepted it
- ✓The currency match between authorisation and settlement is fully documented
- ✓The dispute is based on confusion or a misunderstanding rather than an actual currency error
Accept this chargeback if...
- ✗The cardholder was charged in a currency they did not select or consent to
- ✗DCC was applied automatically without disclosure or explicit cardholder selection
- ✗There was an actual mismatch between the authorised currency and the settled currency
Evidence checklist
- ✅ Required
Original authorisation record showing currency: The authorisation response from the issuer, clearly showing the currency in which the transaction was approved.
- ✅ Required
Settlement record showing currency: The settlement file or confirmation showing the currency in which the transaction was settled, to demonstrate it matches the authorisation currency.
- ✅ Required
DCC disclosure or consent documentation (if DCC was used): The signed or digitally accepted DCC disclosure form showing the cardholder explicitly selected the converted currency and was informed of the exchange rate.
- ⭐ Strongly recommended
Screenshots of checkout showing currency displayed to cardholder: Visual evidence of what currency was shown at each step of checkout — particularly the final confirmation screen before payment.
- ⭐ Strongly recommended
Payment gateway logs showing currency at each stage: Gateway transaction logs that show the currency code at authorisation, capture, and settlement — to demonstrate consistency throughout the transaction lifecycle.
How to write your response
Your response must directly address the currency used at authorisation versus settlement, and — if DCC was involved — document the cardholder’s explicit consent. Show each stage of the transaction with the currency code clearly visible.
If contesting a DCC dispute, the cardholder’s consent record is your most important exhibit. Reference it early in your rebuttal and explain exactly when and how the cardholder selected the converted currency.
“We are responding to chargeback [reference] under Visa code 12.3. Exhibit A shows the original authorisation record confirming the transaction was authorised in [currency]. Exhibit B shows the settlement record — the settlement currency matches the authorisation currency. [If DCC:] The cardholder was presented with a clear DCC disclosure at checkout (Exhibit C), including the exchange rate and converted amount in [home currency]. The cardholder explicitly selected [converted currency]. We request reversal of this chargeback.”
Key deadlines
Response window: 30 calendar days from the chargeback notification date.
DCC consent records must be retained with the transaction record — keep them for at least 18 months to cover potential dispute windows.
Visa rules prohibit changing currency between authorisation and settlement — this is an automatic loss regardless of any consent documentation.
How to prevent this chargeback
- 1
Make DCC opt-in, never opt-out: Display the home-currency equivalent prominently and require the cardholder to explicitly select the converted currency. Pre-selecting DCC on behalf of the cardholder is a Visa rule violation and a common source of 12.3 disputes.
- 2
Match settlement currency exactly to authorisation currency: Currency changes between authorisation and settlement are not permitted under Visa rules. Configure your gateway to prevent any currency conversion after the authorisation stage.
- 3
Configure your gateway to use the cardholder-selected currency: Audit your multi-currency checkout configuration to ensure the currency displayed at the final confirmation screen is exactly the currency submitted for settlement.
- 4
For recurring billing: lock the currency at signup: Document the agreed billing currency at signup and never change it without explicit written consent from the cardholder. Currency changes in recurring billing are a frequent source of 12.3 disputes.
Frequently asked questions
What is a Visa 12.3 chargeback?
Visa 12.3 is a processing error dispute filed when the cardholder claims the transaction was processed in a different currency than was authorised — either without their knowledge or against their explicit selection. It frequently involves dynamic currency conversion (DCC) applied without clear cardholder consent.
Is dynamic currency conversion (DCC) allowed under Visa rules?
Yes, but only with clear upfront disclosure and explicit cardholder consent. Automatic DCC that applies a currency conversion without showing the cardholder the converted amount and requiring them to select it is a common source of Visa 12.3 disputes and is a violation of Visa rules.
Can I win a 12.3 dispute if I used DCC?
Yes, if you have documentation that the cardholder explicitly selected the converted currency — for example, a signed DCC consent form, a checkout screenshot showing the cardholder's selection, or a gateway log confirming their choice. Without this evidence, DCC disputes are difficult to win.
How long do I have to respond to a Visa 12.3 chargeback?
30 calendar days from the chargeback notification date. Gather your authorisation record, settlement record, and any DCC consent documentation immediately and respond as soon as possible.
Related reason codes
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