May 1, 2026
12 min
'Transaction failed' — 2 words, 17 letters, and so much pain. Unfortunately, online transactions sometimes fail, which is not good for payers, providers, or payees. There are different scenarios, but, as a rule, failed payments result in low conversion rates, a spoiled customer shopping experience, and a decrease in profits. The cost of failed payments for businesses can be substantial, with failed transactions having a significant economic impact on both individual companies and the global economy.
We've identified the main causes of transaction failures and ways to minimise such incidents.
What is a failed transaction?
A failed transaction or payment means that a person has tried to pay online, or that someone has tried to charge a customer's card for automatic subscriptions or recurring payments, and the transaction failed, i.e., was unsuccessful.
Why do transactions fail: top reasons and ways to cope
All reasons for failed transactions can be divided into two large groups: soft declines and hard declines.
- A soft decline occurs when the issuer declines a transaction due to reasons such as suspicion of fraud or exceeding spending limits. Still, the issue can often be resolved by contacting the bank or updating the information.
- In contrast, a hard decline means the transaction is permanently declined, typically due to invalid card details or the card being reported as lost or stolen, requiring the customer to take action before attempting another transaction.
Both types of declines impact the customer experience and require different approaches for resolution.
Robust transaction processing systems help minimise payment failures and ensure seamless payment flows, helping businesses manage and prevent failed transactions effectively.
Transactions fail for various reasons, including insufficient funds, technical issues, or incorrect payment information. Below, we've highlighted the most widespread ones; let's explore them.
3D Secure authorisation friction
3D Secure is a form of strong customer authentication (SCA) designed to verify cardholders' identities and reduce fraud, which helps prevent failed transactions and improve payment security. 3DS errors are the most common reason for failed payments. They happen when a user doesn't enter the security code, enters incorrect data, or doesn't receive the code. In such cases, the 3DS authorisation page does not open, and the payment fails. The requirements for 3D Secure authorisation vary among banks and by the degree of payment risk, so merchants should discuss them with their payment service providers and card issuers to minimise errors and ensure their customers can complete transactions smoothly.
Insufficient funds
This error most often occurs due to insufficient funds in a client's account, so the only solution is to top up the bank account and retry. Businesses can also implement real-time notifications or flexible payment options to help customers maintain enough funds in their accounts and reduce the likelihood of failed transactions.
Block by antifraud systems
Quite often, declines occur due to suspicious payers' behaviour, fraudulent activity, and blocklisting. Usually, these are fraud-prevention measures or fraud-detection algorithms that track unusual behaviour or activity and take further action, such as declining a transaction or adding the cardholder to a blocklist. While these fraud prevention systems are effective, they can sometimes mistakenly decline legitimate transactions, impacting customer experience. Merchants can utilise smart anti-fraud tools with customised blocklists and allowlists, or monitor specific payments and process them manually.
Payers' errors due to complex UI/UX
According to Statista, about 3% of all failures stem from this issue, yet it's entirely preventable, even down to 0%. For example, only some payers know that the CVC2 code is required for 3DS authentication. By crafting a payment page that's both user-friendly and intuitive, with clear prompts guiding customers through necessary actions, businesses can effortlessly eradicate this cause of payment failures.
Payment gateway issues
Some payment gateways may decline transactions. One reason is that certain merchant accounts have a transaction limit. If a transaction exceeds that amount, it gets declined. Issues with the payment provider or payment processor, such as downtime, technical errors, or connectivity problems, can also lead to failed transactions. In such cases, the payer can opt for another payment method, such as an alternative card or a digital wallet, to complete the purchase. Another reason is payment gateway downtime. Routing transactions through different acquiring banks or payment providers can optimise approval rates and reduce failures.
Security check issues
A security threat from the issuing bank's side can lead to a decline. The issuing bank or card issuer may decline a transaction due to security concerns or fraud detection measures. For example, a card marked for domestic use is being used on an international website.
Issues with the customer's card, such as restrictions, limitations, or insufficient funds, can also cause declines. International transactions are more susceptible to payment failures due to currency exchange fluctuations, regulatory differences, and stricter fraud detection protocols.
There may also be a range of other issues due to a poor internet connection, incorrect two-factor authentication, or connection timing out due to a slow response from the initiator's end.
Payment method-related issues
These are among the most frequent culprits behind failed online payments. Payment method-related issues often stem from insufficient funds in the customer's bank account, expired cards, or incorrect payment information entered during checkout. For example, a simple typo in the card number or an outdated billing address can cause the payment to be declined, leading to frustration and a disrupted customer experience.
To reduce failed payments caused by payment method issues, businesses should offer multiple payment methods, such as credit and debit cards, bank transfers, and digital wallets, so customers can choose the option that best suits them. This flexibility increases the likelihood of successful transactions and caters to diverse customer preferences across regions.
Additionally, providing clear, step-by-step prompts and validation checks during the payment process can help customers enter their payment details accurately. By making the payment journey intuitive and error-proof, businesses can significantly decrease the number of failed payments and ensure a smoother, more satisfying customer experience.
Payment channels and error codes
Understanding how different payment channels behave and how to interpret their error codes is key to diagnosing failures and improving acceptance rates at scale.
Payment channels represent the routes through which transactions are processed, including card payments, bank transfers, digital wallets, and alternative payment methods. While they may appear interchangeable at checkout, each channel operates under different rules, risk models, and technical dependencies, which directly affect how and why payments fail.
How payment channels influence failure patterns
Each payment channel has its own 'failure logic':
- Card payments are highly dependent on issuer decisions and fraud checks, making them more sensitive to declines related to risk scoring, authentication, and balance issues
- Bank transfers and local payment methods tend to fail due to user drop-off, incorrect input, or processing delays rather than issuer rejections
- Digital wallets typically reduce input errors and friction, but failures can still occur due to device authentication issues or tokenisation problems
- Alternative payment methods depend heavily on regional infrastructure and provider availability, which can introduce variability in performance
As a result, a high failure rate is rarely a universal issue — it is usually channel-specific.
What error codes actually tell you
When a transaction fails, payment providers return error codes that reflect the underlying issue. While these codes vary across providers, they generally fall into a few functional categories:
- Customer input or account issues (e.g. insufficient funds, invalid details) → typically require user action
- Issuer-side decisions (e.g. suspected fraud, spending limits, geographic restrictions) → often recoverable through retries, routing, or adjusted authentication
- Technical and infrastructure errors (e.g. timeouts, gateway downtime, integration issues) → indicate problems within the payment stack
- Authentication failures (e.g. incomplete 3D Secure, failed verification) → highlight friction in the checkout flow
Looking at error codes in isolation provides limited value. The real insight comes from analysing them in the context of payment channels, providers, and user flows.
Turning payment data into optimisation opportunities
Businesses that systematically track payment channel performance alongside error code distribution can move from reactive troubleshooting to proactive optimisation.
In practice, this means:
- Identifying underperforming providers or channels and redistributing traffic accordingly
- Detecting patterns in issuer behaviour across regions, BINs, or payment methods
- Eliminating unnecessary retries by distinguishing between recoverable and non-recoverable failures
- Improving checkout UX where user-related errors are frequent
- Fine-tuning authentication and fraud settings to reduce avoidable declines
Instead of treating failed payments as isolated incidents, this approach treats them as structured signals, revealing where the payment flow breaks and how it can be improved.
Ultimately, payment performance is about understanding the interaction between channels, providers, and user behaviour and continuously optimising based on that insight.
How to decrease payment failures
- Users are more likely to complete payments when the payment page is helpful: split the card number field into four-digit blocks with automatic cursor movement to the next block, visually mimic a bank card, and avoid unnecessary fields or information. Provide tips at each stage of filling out the payment details – everyone appreciates convenience and time savings.
- Owners of online businesses can improve conversion rates, for example, by reducing 3DS requirements, but this also increases risk. A lot depends on the companies that process card transactions: the technological capabilities of a robust white-label gateway can maximise conversion.
- Analyse reasons for payment failures and remind your customers of abandoned carts. Sales results increase after several reminders about an unfinished purchase, compared to cases in which only one formal message was sent.
- Use automated notifications to remind customers of payment issues, deadlines, or grace periods, helping to manage failed transactions more effectively. When offering grace periods for overdue or failed payments, set a reasonable duration that balances customer flexibility with business revenue needs, and communicate this clearly to customers.
- Offering multiple payment methods is a proven strategy for reducing failed payments and boosting customer satisfaction. When a payment fails, whether due to insufficient funds, an expired card, or another issue, providing alternative payment methods gives customers the flexibility to complete their purchase using a different option. For example, if a credit card transaction fails, the customer can switch to a bank transfer or digital wallet, increasing the chances of a successful transaction.
- Implement automated retry mechanisms and dunning email automation to recover failed payments. Automated retries attempt the payment again after a short interval, while dunning emails notify customers of the failed payment and prompt them to update their payment information or choose an alternative method.
Failed transaction rates and analysis
Monitoring and analysing failed transaction rates is crucial for any business aiming to optimise payment performance and enhance customer satisfaction. The failed transaction rate measures the proportion of payment attempts that fail, providing a clear indicator of potential issues in the payment process.
By regularly tracking failed payments, businesses can identify patterns, such as a spike in failures due to insufficient funds, expired cards, or technical issues with payment processing. This matters because failed payments are not rare edge cases: PYMNTS reported that over 10% of online transactions processed by the average eCommerce firm failed in 2024, while subscription businesses lose an average of 9% of sales to failed payments.
Understanding the root causes of failed payments allows businesses to refine their payment infrastructure, reduce lost revenue, and deliver a more reliable payment experience. Ultimately, a data-driven approach to analysing failed transaction rates empowers businesses to make informed decisions, improve payment performance, and increase overall customer satisfaction.
How can Corefy help?
We at Corefy offer a holistic solution for smooth payment acceptance with minimal failed transactions. Our intuitive checkout improves customers' payment experience through clear design and a user-friendly interface. Moreover, each payment declined during automatic verification can be verified manually or routed to another provider. Opting for our Checkout, you can customise it based on your brand's look and feel to increase the payer’s confidence and, as a result, boost your conversion rates.
Sure, failures in online payments are not entirely avoidable. However, knowing the main reasons can help you increase acceptance rates and minimise possible failures. Contact us to find out how your project can benefit from our solution.
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