What does decline code 43 mean?
Decline code 43 means the card has been reported as stolen by the cardholder or identified as compromised by the issuing bank. All transactions are immediately and permanently blocked. This is a hard decline with fraud implications — it carries more urgency than a lost card (code 41).
When a stolen card code is returned, it signals that unauthorized use is suspected or confirmed. The card network treats this as a high-priority security event, and both the merchant and the cardholder have specific responsibilities.
How code 43 differs from code 41 (lost card)
While both codes result in a permanent block, code 43 (stolen) carries additional fraud investigation implications. The issuing bank will typically initiate a fraud review, examine recent transactions for unauthorized charges, and may issue provisional credits to the cardholder for disputed transactions.
Merchants who receive code 43 in a card-present environment may be instructed to retain the physical card if it can be done safely. This is not required in all jurisdictions, and merchant safety should always come first.
How to resolve decline code 43
The cardholder should work directly with their bank to report all unauthorized transactions, complete any fraud investigation paperwork, and request a replacement card with a new number. Banks typically expedite replacement cards for stolen card situations.
The cardholder should also review all accounts where the stolen card was saved — online shopping sites, subscription services, digital wallets, and automatic bill payments — and either remove or update the payment method once the new card arrives.
If the cardholder suspects broader identity theft beyond just the card, they should also consider placing a fraud alert on their credit report and monitoring their accounts closely for several months.
Merchant responsibilities
Merchants should never retry a transaction that returns code 43. Attempting to force the transaction can result in chargebacks, fines from the card network, and potential loss of processing privileges in severe cases.
If code 43 appears frequently for your business, review your fraud prevention measures with your payment processor. High rates of stolen card attempts can indicate your business is being targeted by fraudsters, and additional security measures like 3D Secure or address verification may be warranted.
