How To Integrate Payment Gateway in Wordpress Using TransFi Bizpay: Complete Step By Step Guide

12 Min

May 22, 2025

Introduction

Do you wish to sell products or services online? Building an app or a website can be a cumbersome and expensive affair. There are many online platforms that can help you create a website for free. One of them is WordPress. With WordPress, you can create a website for free. If you wish to have a custom domain, you can get one through WordPress as well. Once your WordPress website is set up, all you need to do is integrate a payment gateway on it and start selling your wares. With the easiest integration, completely online onboarding, feature-filled checkout and best in class performance, you can quickly go live with Transfi’s Payment Gateway - ‘Bizpay’ and experience the future of payments. 

How Do Payment Gateways Work

The payment gateway functions as an intermediary between the consumer, your website, and the payment processor. It enables your e-commerce site to request payment from a consumer's bank account for products/services they have purchased. If approved, the payment is securely transferred to your bank.

The payment gateway allows you to accept payments without having to manage the financial aspects of the transaction or store any sensitive customer data while still providing secure software and connections for a nominal fee.

Prior to setting up a payment gateway on WordPress, let’s take a look at how it works:

  1. A customer browses a merchant's website, adds items to their shopping cart and proceeds to the checkout page.
  1. Once they submit the order, their web browser encrypts the payment information and sends it to the merchant's web server using SSL encryption.
  1. The payment gateway then forwards the transaction details to the payment processor.
  1. The processor forwards the transaction request to the bank that issued the customer’s credit/debit card.
  1. The bank checks if the funds available to the customer can cover the amount requested and then sends a response to the payment processor.
  1. The processor forwards the response to the payment gateway, which in turn notifies both the merchant and the customer.
  1. If the payment is approved, the bank deposits funds into the merchant account.

The Most Popular Payment Gateways To Use On WordPress Site

An unreliable payment gateway can cause transaction failures and discourage customers from returning. Consequently, selecting the proper payment solution is essential for the success of an online store. Therefore, a thorough comparison of the best eCommerce payment gateways is recommended before implementing a payment gateway in WordPress.

  1. Transfi 

TransFi is a Lithuania-based fintech startup simplifying cross-border payments. It  offers checkout, payment links, and escrow solutions to reduce the complexities and risks of international transactions. It also provides integrations in wordpress or any other websites via API through which users want to carry out their transactional operations. With a global network covering over 85 markets and card support in 173+ markets, Transfi enables fast, cost-effective payments via a single API, using open banking and real-time payment networks.

  1. Exactly

A user-friendly interface and configurable reports provide clients with valuable insights into their e-commerce business. Exactly supports major credit and debit cards, as well as most e-wallets. Retailers can select between hosted pages and API integration based on the requirements of their WordPress sites. Furthermore, Exactly payment gateway provides customised pricing, making it ideal for both small businesses and large enterprises.

  1. PayPal

PayPal is available in 202 countries and supports 25 currencies, making it a likely option for a WordPress payment gateway in your region. It is renowned as a payment gateway provider for its 24/7 account monitoring, fraud protection, and PCI compliance. WooCommerce PayPal Checkout Payment Gateway is the most popular integration plugin. Additionally, PayPal can be easily integrated with several other plugins, giving it the potential to be a highly customisable option.

  1. Stripe

Stripe is a renowned payment solution that allows the owners of online stores to process transactions in more than 135 currencies. The transaction fee charged is 2.9% + 0.30 cents, making it a cost-effective option. There is no need to set up a separate merchant account, and funds can be automatically transferred to your linked account in as little as two days. Stripe is PCI-compliant and provides client-side tokenization, allowing customers to stay on your website during the payment process. The WooCommerce Stripe Payment gateway is a popular plugin for integration, but Stripe also offers pre-built integrations with AmazonPay, ApplePay, and Venmo.

  1. Braintree

Although owned by PayPal, Braintree operates as an independent entity, providing its own products and services. It is highly recommended and is compatible with PayPal, allowing buyers to pay with their PayPal balance or a credit/debit card. To enable payment transfers on your site, you'll need to install either the WooCommerce or Braintree plugin for WordPress. The per-transaction fee is only 1.9% plus $0.30.

How To Implement Payment Gateway In WordPress Website

To start collecting payments via your WordPress website, first, you need to register for a payment gateway and enter the supplied API information into the Payment Settings page in the WordPress administration area. For further steps, please refer to the payment gateway integration in the WordPress tutorial below.

  1. Sign up On The Payment Gateway Website

When choosing a payment gateway, you'll want to consider factors such as charged fees, security, and ease of integration. Once you've chosen a provider, you can sign up on its website and follow the instructions to implement the gateway on your WordPress site. For example, if you select Transfi as your payment gateway provider, the registration process will start by signing up with Transfi. The registration form will require you to provide a secure password and an active email that you will need to verify the newly created Transfi account. These few steps are enough to review the available services and features. However, to access the payment gateway and find out the service fee, get ready to provide more details, such as the type of your business, personal data (first/last name, birthdate) and some contact info (country, city, postal address and code, phone number).

  1. Install And Activate The Chosen Plugin

Follow the following steps to install and activate the plugin;

  1. Installing via WordPress Dashboard:
  • Sign in to your WordPress Dashboard.
  • Click the “Add New” button in the “Plugins".
  • Search for Transfi in the plugin search box and click “Install Now”.
  • Once installed, click “Activate” to add a payment gateway in WordPress website
  1.  Uploading via WordPress Admin:
  • Launch WordPress and sign in,
  • Proceed to the “Plugins”, click the “Add New” button and select “Upload Plugin” from your WordPress dashboard.
  • Locate the zip file in your local file system and click the “Install Now” button.
  • Once the installation is finished, you will be presented with the message “Plugin installed successfully”. Click the “Activate Plugin” button to continue.
  1. Find The Payment Gateway API Key ID

Once you successfully install and activate the Transfi plugin, you will be redirected to the payment gateway settings, where you can see two modes – Live and Test. Ensure that you remain in Test Mode until you have completed configuring the payment forms.

  1. Next, sign in to your Transfi account and go to the “Developers” section of the dashboard. There, you will find your Publishable and Secret keys in the API Keys section. If, for any reason, you are not able to locate the API Keys section, contact Transfi’s customer support to receive immediate assistance.
  1. Use The Key In Your Plugin Under Payments

Open the WordPress admin dashboard in a new tab. Copy and paste the required API keys from the Transfi account to the WPPayForm settings page. Once this is done, input the business name and the checkout logo on the payment form, which can be done through the Checkout Logo option. 

  1. Finally, click the “Save Settings” button to connect the WPPayForm with the Transfi account.

As soon as you are finished using Publishable and Secret keys, your next move is to create a payment form:

  1. Navigate to the WPPayForm page and click the “Add New Form” button.
  1. A pop-up window will present multiple predefined forms.
  1. Opt for the “New Blank Form” box. 
  1. You will then view three distinct sections: Product, Payment Method, and General Fields.
  1. Configure these sections according to your product offerings, payment mode, and other supplementary information. 
  1. Click the “Update” button and publish the form.

Integrate Transfi Payment Gateway In Your WordPress Website Today

Transfi payment gateway is an easy-to-use and secure solution that allows you to accept payments from international customers in more than 150 currencies. In addition to advanced fraud protection and chargeback management features, Transfi supports the most common credit and debit cards as well as the most renowned digital wallets.

The payment gateway integration process takes only a few minutes. All that is necessary is to add a few lines of code to your WordPress website, test the payment process, and confirm that data is transmitted correctly between the systems. Once these steps are completed, the payment gateway will be ready to use. 

Transfi offers tailored terms for fees and commissions to each customer to meet their individual needs and preferences. Take advantage of our flexibility and transparency to benefit your business. Contact us today to find out how we can help you to grow.

When choosing the right platform for integrating payment gateways and other finance operations, users should consider factors such as integration compatibility, processing fees, supported payment methods, security features, and the reliability of customer support. The best platform for you will depend on your specific requirements, such as the volume and frequency of transactions, the countries you're dealing with, and your budget. Checkout Transfi’s Bizpay for easier transactions, faster payouts and collections and simplified transfers.

Conclusion

Whether running a small business or a multinational corporation, having a well-functioning payment gateway on your WordPress-powered eCommerce site is essential. Payment gateways create an optimised environment, making it easier for customers to buy your products and for you to receive payments. The steps outlined above show how to integrate a payment gateway in a WordPress website. If you require further assistance setting up Transfi's payment gateway - Bizpay, please do not hesitate to reach out.

With Transfi’s Bizpay, you can trade globally with a variety of currencies and payment methods. Moreover, this platform ensures that the payment methods you use are safe and provides favourable to accept payments without any designated website.

Frequently asked questions (FAQs)

  1. How is it an easy process to integrate payment gateways in wordpress websites?

There are many online platforms that can help you create a website for free. One of them is WordPress. With WordPress, you can create a website for free. If you wish to have a custom domain, you can get one through WordPress as well. Once your WordPress website is set up, all you need to do is integrate a payment gateway on it and start selling your wares. 

  1. How do payment gateways work?

A payment gateway is a technology platform that acts as an intermediary in electronic financial transactions. It enables in-person and online businesses to accept, process and manage various payment methods – such as credit cards, debit cards and digital wallets – in a secure and efficient manner. The payment gateway bridges the gap between the customer, the business, and their respective financial institutions in one platform, typically charging a fee every time a transaction is processed.

  1. What are the most popular payment gateways to integrate on wordpress sites?
  • Transfi
  • Exactly
  • Paypal 
  • Stripe 
  • Braintree 
  1. How To Integrate Payment Gateway In WordPress Website?

Follow the instructions we provided above in this article, and payment gateway integration in your WordPress-based website will be very easy.

  1. Why is Transfi one of the best platforms to accept payments?
  • Easy scheduling and managing 
  • Low fees and transparent pricing
  • Realtime global access
  • Integration with payment platforms 
  • Integration with wordpress websites
  • Variety of payment methods
  • Security and legal compliance 

TransFi Team

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