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Understanding Authorisation Declines: Soft vs Hard, and How to Reduce Them

28 January 2025

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Written by Libby James
Libby James is co-founder, director and an expert in all things merchant services. Libby is the go-to specialist for business with more complex requirements or businesses that are struggling to find a provider that will accept them. Libby is regularly cited in trade, national and international media.
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    Authorisation Decline Disruption - A Merchant Guide

    Managing payment declines is a critical challenge for businesses. Authorisation declines can disrupt revenue flow and frustrate customers, but understanding their causes, especially ambiguous codes like "Do Not Honor," can help businesses implement effective solutions and improve customer satisfaction. Understanding why transactions fail, the meaning behind decline codes, and how to address them can help businesses optimise their payment processes and recover lost revenue.

    What Are Payment Authorisation Rates?

    Authorisation rates represent the percentage of submitted transactions approved by the issuing bank. They are calculated after the customer clicks ‘Pay’ and determine the success of payments.

    Though separate from conversion rates—which track customer actions before payment—authorisation rates complement them in providing a full picture of the customer payment journey. Monitoring both metrics is crucial for optimising the end-to-end payment experience.

    What Is a Decline Code?

    A decline code is a two-digit alphanumeric code issued when a transaction is declined. These codes are typically provided by issuing banks, payment processors, or credit networks, and they give insight into why the transaction failed. Some payment processors, like Stripe, may display customised codes to help businesses resolve issues and complete transactions.

    Types of Declines Soft Vs Hard

    Soft Declines

    Soft declines are temporary and often recoverable. Examples include:

    • Do Not Honor (05): The bank declines the transaction without giving a specific reason.
    • Insufficient Funds (51): The customer’s account balance isn’t sufficient to cover the transaction.
    • Processor Unavailable (91): A technical issue prevents the transaction from processing.

    These declines can often be addressed with retries or by asking the customer to take further action.

    Hard Declines

    Hard declines are permanent and cannot be resolved by retrying. Examples include:

    • Invalid Account Number (14): The provided account details are incorrect.
    • Lost Card (41): The card has been reported lost.
    • Stolen Card (43): The card has been flagged as stolen.

    Retrying hard declines is strongly discouraged, as it can harm your authorisation rates. Customers must provide a new payment method in such cases.The Challenge of "Do Not Honor" Declines

    The "Do Not Honor" code is one of the most confusing for merchants. This generic code means the issuer rejected the payment without providing a clear reason, leaving merchants to guess the cause and determine the next steps. Customers, meanwhile, are often left puzzled and frustrated by the failure.

    What Triggers a Decline Code?

    Declines can be triggered by various factors, not all of which are linked to fraud or insufficient funds. Common reasons include:

    1. Expired Card: Transactions fail if customers use cards past their expiration date.
    2. Insufficient Funds: The account balance doesn’t cover the transaction.
    3. Invalid Card Number: Card details cannot be verified by the issuing bank.
    4. Verification Issues: A faulty microchip or magnetic stripe can disrupt processing.
    5. Credit Limit Exceeded: The transaction exceeds the cardholder’s credit limit.
    6. Incorrect CVV: Entering the wrong security code can lead to declines.
    7. Transaction Restrictions: Cardholders may block certain transaction types.
    8. Invalid Transaction: Errors in entering card details can result in processing failures.

    By understanding these triggers, merchants can anticipate potential issues and improve their response strategies.

    Common Credit Card Decline Code Glossary

    Here’s a list of common credit card decline codes and the recommended actions:

    Code

    Meaning

    Recommended Action

    01

    Refer to Card Issuer

    Advise the customer to contact their bank.

    05

    Do Not Honor

    Suggest retrying or contacting the issuer for more details.

    14

    Invalid Account Number

    Ask the customer to verify and re-enter their card details.

    41

    Lost Card, Pick Up

    Advise the customer to contact their bank immediately.

    43

    Stolen Card, Pick Up

    Recommend the customer use a different card.

    51

    Insufficient Funds

    Inform the customer to check their account balance.

    54

    Expired Card

    Request an updated card from the customer.

    57

    Transaction Not Permitted – Card

    Suggest the customer contact their issuer for clarification.

    91

    Issuer or Switch Unavailable

    Retry later when the network is restored.

    96

    System Error

    Wait and attempt the transaction again later.

    97

    Invalid CVV

    Verify the CVV and ask the customer to re-enter it.


    This list offers businesses insights into why payments fail and how to address them effectively.

    Decline Code Flow

    The flow of decline codes involves multiple layers, each contributing to how they’re interpreted:

    1. Issuer: Banks generate codes based on the cardholder’s account status (e.g., insufficient funds, fraud suspicion).
    2. Card Networks: Networks standardise codes across the industry, though variations may exist.
    3. Acquirers/Payment Systems: These entities refine codes to give merchants actionable insights.
    4. Merchants: Businesses use the codes to implement strategies like retries or alternative payment methods.

    Key Factors Affecting Authorisation Rates

    Improving authorisation rates starts with understanding the factors that influence them:

    • Market: Different regions may have varying decline rates due to local regulations and preferences.
    • Issuing Bank: Some banks have stricter fraud prevention rules that impact approval rates.
    • Card Type: Tailor payment methods to customer preferences, as certain card types may have lower success rates.
    • Transaction Amount: Decline rates may vary for high- or low-value transactions. Adjust rules to optimise performance.

    Uncovering Payment Authorisation Issues

    To improve authorisation rates, identify and address the root causes:

    1. Analyse Data: Use payment insights tools to evaluate metrics across providers, currencies, and issuing banks.
    2. Monitor Trends: Look for patterns that indicate issues, such as frequent declines from a specific card type or bank.
    3. Develop Strategies: Implement targeted solutions to address identified problems.

    How to Reduce Declines and Increase Authorisation Rates

    1. Analyse Decline Codes

    Review codes to identify common issues and adjust retry or routing strategies accordingly. For example, network issues may call for retries, while insufficient funds require customer communication.

    2. Implement Intelligent Retries

    Retries can recover transactions declined for temporary reasons:

    • Use adaptive systems to retry transactions at optimal times.
    • Route failed payments through alternative payment processors.

    3. Optimise Fraud Tools

    Fine-tune fraud detection settings to avoid blocking valid transactions:

    • Customise fraud rules to account for legitimate customer activity.
    • Leverage machine learning to distinguish genuine payments from threats.

    4. Adopt Adaptive 3D Secure (3DS)

    This enhances fraud prevention while minimising unnecessary customer friction:

    • Use risk-based authentication to verify only high-risk transactions.
    • Monitor 3DS performance and refine settings for maximum efficiency.

    5. Educate Customers

    Help customers understand why their transactions might fail and how to resolve issues, such as updating expired cards or ensuring sufficient funds.

    Wrapping It Up

    Addressing authorisation declines is vital for reducing lost revenue and enhancing customer satisfaction. By analysing decline codes, leveraging advanced payment tools, and optimising processes, businesses can significantly improve authorisation rates.

    Armed with these insights, your business can minimise declines, recover more revenue, and create a seamless payment experience for your customers. 

    FAQs

    What is a payment authorisation rate?
    A payment authorisation rate is the percentage of transactions approved by the issuing bank out of the total submitted. It reflects how often payments are successfully processed after customers click "Pay."
    What is a decline code, and why is it important?
    A decline code is a two-digit alphanumeric code provided when a transaction fails. It indicates why the payment was declined, helping merchants identify issues and implement appropriate solutions.
    What does the “Do Not Honor” decline code mean?
    The "Do Not Honor" code is a catch-all response from the issuer, meaning the payment was declined without a specific reason. Merchants should advise customers to contact their bank or try an alternative payment method.
    Can I retry a declined payment?
    Yes, you can retry payments for soft declines (e.g., insufficient funds or network issues). However, hard declines (e.g., lost or stolen cards) should not be retried, as this can harm your authorisation rate and violate card network rules.
    How can I reduce payment declines?
    You can reduce declines by implementing intelligent retries, optimising fraud detection tools, adopting Adaptive 3D Secure (3DS), and ensuring customer payment details are accurate and up to date.
    Why do some payments fail despite sufficient funds?
    Payments can fail due to reasons like expired cards, incorrect CVV, transaction restrictions, or issues with the card’s magnetic stripe or chip. These errors often require verification or corrections by the customer.
    What should I do if a customer’s card is declined?
    Inform the customer of the decline and suggest possible solutions, such as retrying the payment, using a different card, or contacting their bank to resolve the issue.
    How do decline codes differ between payment processors?
    While card networks standardise decline codes, payment processors may refine or group them to make them more merchant-friendly. For example, processors like Stripe may provide customised codes to help resolve issues more efficiently.

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