Soft Decline

Soft declines communicate that the decline condition is not permanent. The most common soft decline code is 05 (Do Not Honor), a generic issuer decline that may reflect a momentary risk assessment decision, a temporary account issue, or an issuer system applying cautious logic to an unfamiliar transaction pattern. Other soft decline codes include 51 (Insufficient Funds) and 65 (Transaction Not Permitted), as well as SCA-related codes that request step-up authentication.

Card scheme rules permit retrying soft declines, but with restrictions on timing and frequency. Visa and Mastercard each publish specific retry rules that define how many times a soft-declined transaction can be retried, with what minimum waiting period between attempts, and for what duration after the first decline. These rules are designed to prevent merchants from flooding issuers with repeated authorisation attempts on transactions the issuer has already declined.

SCA-related soft declines are a distinct subcategory: when an EEA issuer returns a soft decline because SCA authentication is required, the merchant should not simply retry the same transaction. The correct response is to initiate a 3DS authentication flow and then resubmit the authorisation with the authentication result.

The distinction between soft and hard declines must be enforced in automated retry systems. A retry system that treats all declines the same will retry hard declines (which is a scheme rule violation) and may also miss the specific handling required for SCA-related soft declines.

Retry strategy for soft declines has measurable revenue recovery potential: a well-configured retry system that applies the correct timing and frequency for each soft decline code category can recover 2-5% of soft-declined transactions. This is incremental revenue at zero acquisition cost.

Scheme retry rules must be followed precisely: card networks publish explicit retry rules with waiting periods and maximum attempt counts. Violating these, submitting too many retries or retrying too quickly, results in scheme fines that can be substantial for high-volume merchants.

Soft decline codes require classification, not just identification: the handling for a 05 (Do Not Honor) differs from a 65 (SCA Required) differs from a 51 (Insufficient Funds). Retry systems should map each decline code to the appropriate recovery action: wait and retry, initiate 3DS, request alternative payment method, or abandon.

Retry timing windows are scheme-specific: Visa and Mastercard retry rules differ. A merchant operating with both Visa and Mastercard cards must apply the correct retry window for each. Unified retry logic that applies a single rule across all card types will violate one scheme's rules.