Downgrade
When a credit card transaction fails to meet the qualification requirements for its optimal interchange category and is processed at a higher, more expensive interchange rate.
Downgrades occur when transactions do not meet all the data requirements necessary to qualify for the lowest available interchange rate. Card networks establish specific criteria for each interchange category, and failure to meet these requirements results in the transaction being "downgraded" to a higher-cost category. The difference between the qualified rate and the downgraded rate represents additional cost to the merchant.
Common causes of downgrades include batching transactions more than 24-48 hours after authorization, failing to capture Address Verification Service (AVS) data for card-not-present transactions, not submitting Level 2 or Level 3 data for commercial card transactions, processing without proper authorization, entering incorrect or incomplete transaction information, and using non-EMV terminals for card-present transactions when EMV capability is available.
The financial impact of downgrades varies significantly based on card type and the target versus actual interchange category. A commercial card transaction that should qualify at 1.90% + $0.10 but downgrades to 2.95% + $0.10 costs the merchant an additional 1.05% on that transaction. For a $10,000 commercial card sale, that single downgrade costs an extra $105. Merchants can reduce downgrades by ensuring their payment systems are properly configured to capture all required data fields, batching transactions within 24 hours of authorization, using EMV terminals for all card-present transactions, and working with processors who provide downgrade monitoring and reporting.
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3D Secure
An authentication protocol for online card transactions that adds an additional verification layer between the cardholder and issuing bank, shifting fraud liability from merchants to card issuers when properly implemented.
ACH Payment
Automated Clearing House payment is an electronic bank-to-bank payment method that transfers funds directly between bank accounts through the ACH network, typically used for direct deposits, bill payments, and recurring transactions.
Acquirer
A financial institution that processes credit card payments on behalf of merchants, maintains merchant accounts, and facilitates the settlement of funds from card-issuing banks to merchant bank accounts.
Address Verification Service (AVS)
A fraud prevention tool that compares the numeric portions of a billing address provided during a transaction against the address registered with the card-issuing bank, returning match result codes to help merchants assess transaction risk.
Aggregator
A payment service provider that enables multiple merchants to process card transactions under a single master merchant account rather than each merchant having their own dedicated merchant account, common with services like Square, Stripe, and PayPal.