Guide to integrating Online Payment Gateways into your website

1. Why should you integrate online payments into your website?

Integrating an online payment gateway into your website enhances the shopping experience on your sales platform or e-commerce site. When customers can pay directly on your website, the ordering process becomes faster, smoother, and allows them to complete transactions in just a few steps.

From a management perspective, an online payment gateway helps businesses track and control cash flow from orders in a centralized and transparent manner. All payments are recorded through the system, making financial management simpler and more accurate.

In addition, offering online payments helps eliminate concerns about inconvenience or risks associated with COD payments, while keeping your product policies and pricing unchanged.

2. What benefits do businesses gain from integrating online payments?

The most notable advantage is the reduced time customers need to complete an order. With fast payment options, businesses can lower operational costs and optimize cash-flow management compared to handling cash transactions.

Moreover, the shopping experience—both online and in-store—becomes more seamless when customers do not need to carry cash. Businesses can also easily run promotions such as discount codes or vouchers for online payments, thereby encouraging more purchases.

Most importantly, reputable payment gateways offer strong security, protecting users’ personal and financial data. This significantly reduces the risk of loss, fraud, or errors when using cards or QR code payments.

3. How to integrate a payment gateway into websites and applications

3.1. Integrating an online payment gateway into a website

To add an online payment gateway to your website, you must first have administrative access. You can then enter the required technical configuration yourself or contact the payment gateway provider for faster setup support.

Once you choose your preferred payment method, the provider will supply the necessary API to connect your website, ensuring a smooth and seamless checkout process. Popular payment gateways include 9Pay, ZaloPay, MoMo, VNPay, and others.

3.2. Integrating a payment gateway on wordpress

Integrating online payments on WordPress is simple. You only need to download the plugin provided by the payment service provider and install it on your site.

After installation, review and configure the fields that appear on the checkout page. To ensure the feature works correctly, perform one or two test transactions before going live.

3.3. Integrating a payment gateway into mobile applications

For mobile apps, payment gateway integration must be carried out directly by the provider’s technical team. They will help implement the SDK or API depending on your iOS or Android platform. Businesses can leave their information to receive 24/7 technical support and guidance.

4. Important notes when integrating online payments on a website

When enabling online payments, carefully review the documentation provided by the payment gateway to avoid errors during customer transactions.

Understand your website platform to choose the most suitable payment gateway. QR code payment methods are widely favored for their convenience and compatibility with most users.

Security is critical. Even a small vulnerability can damage customer trust and negatively impact your brand’s reputation.

To optimize the checkout process, business owners should consult directly with the payment provider to select the best solution and deliver an excellent user experience.

Also, consider transaction fees, promotional policies, and technical support packages. This helps you choose the most cost-effective payment gateway and minimize operational expenses for your website.

5. 9Pay – A leading payment gateway solution for business websites

The 9Pay payment gateway is known for its fast and flexible integration, enabling business websites and online platforms to meet the growing demand for online payments. Integrating 9Pay not only optimizes the transaction process but also supports the shift toward a cashless payment culture among consumers.

5.1. Diverse payment methods

With the 9Pay electronic payment gateway, your customers can choose from multiple payment options to meet their online transaction needs, such as:

+ Payment via 9Pay e-wallet

+ Domestic and international cards

+ QR code payment – VietQR

+ Bank transfer

+ Buy Now, Pay Later (BNPL)

+ Apple Pay, Samsung Pay, Google Pay

+ Credit card installment payment

5.2. Solid security – Transparent legality

Full licensing: 9Pay operates in compliance with regulations set by the State Bank of Vietnam, giving businesses complete peace of mind.

International security standards: 9Pay applies strict security certifications (PCI DSS, KYC, etc.) to ensure customer information and transactions are protected at the highest level.

5.3. Optimizing the payment experience

0% installment payment: Supports installment plans via credit card, helping businesses increase conversion rates for high-value products and services.

Fast refunds: Clear and simple refund processes, especially beneficial for travel and e-commerce businesses where cancellations occur frequently.

5.4. Easy integration – 24/7 Technical support

9Pay provides APIs, SDKs, and plugins/modules for popular e-commerce platforms such as WooCommerce and Shopify. This allows businesses to deploy quickly without facing technical barriers.

The 9Pay technical team is available 24/7—including weekends and holidays—ensuring timely support for any issues that arise.

5.5. Payment link solution – Create a payment link in one click

9Pay also offers a Payment Link solution, allowing businesses to create a payment request link with just one action. This enables customers to complete payments easily without logging in or performing complex steps, while helping businesses reduce operational costs.

In addition to its electronic payment gateway, 9Pay provides several other valuable services, including:

• Collection & Disbursement Services
• 9Remit: International Money Transfer Service
• E-wallet services

If you want to explore more or experience 9Pay’s services directly, feel free to reach out for detailed consultation.

Contact us now!

• Website: 9Pay.vn

• Hotline: 1900 88 68 32 (Support 24/7)

• Email: business@9pay.vn