Card approval rate: why it drops and 9 ways to improve it

Diego Gomes · 2026-10-07

A low card approval rate can directly affect your sales. Learn the main reasons why it happens and how to improve this metric.

Overly aggressive fraud prevention

Fraud prevention systems are essential, but an overly strict filter can block legitimate transactions. Review your system settings:

• Analyze declined transaction reports to identify false-positive patterns.
• Consider adjusting your blocking parameters, prioritizing higher-value transactions or customers with a purchase history.
• Use solutions that let you customize rules based on the customer profile.

3ds and when to enable it

3D Secure (3DS) adds a layer of security, but it can affect the user experience.

• Enable 3DS for high-value transactions, where the risk of chargebacks is higher.
• For low-value purchases, consider disabling it or making it “optional,” so customers can choose.
• Monitor approval rates before and after implementation to evaluate its effectiveness.

Customer and address details

Accurate information is crucial for transaction validation.

• Make sure your checkout asks for complete details, including CPF/CNPJ and the shipping address.
• Validate these details in real time against the card processor’s database.
• Offer incentives for customers to review their information before completing their purchase.

Installment payments

Installment payments can increase the approval rate by making purchases more affordable.

• Offer different installment options (2x, 3x, 6x) to suit different customer profiles.
• Analyze installment acceptance compared to one-time purchases and adjust as needed.
• Test how you communicate installment terms to make sure customers know what options are available.

Smart retry

Implementing a retry strategy can recover sales that were initially declined.

• Set a timeframe (e.g., 30 minutes after the decline) to try the transaction again.
• Use a friendly tone in your messaging, explaining that another attempt will be made without the customer needing to do anything.
• Monitor retry success rates and adjust the time windows or payment methods as needed.

Other things to review

In addition to the points above, consider adjusting:

• The alternative payment methods you offer (e.g., Pix, digital wallets).
• Your checkout speed, since a slow process can lead to drop-offs.
• Your site’s visual communication and how much trust it inspires in customers.

Card approval rate is a metric that requires constant attention. What tactics have you tested, and what impact did they have on your approval rate?