[Latest for 2026] What are the benefits of introducing Merpay through payment processing company company? A thorough explanation from how it works to how to choose

Whether you can provide the payment methods that end users want to maximize sales on your e-commerce site is a very important factor. In recent years, the use of "ID payment" via smartphones has rapidly expanded as a means following Credit card payment.

Among them, "Merpay" offered by Merpay Co., Ltd. is a notable payment method with a unique economic zone where sales from the flea market app "Mercari" can be utilized. This article discusses the benefits of introducing Merpay into your own e-commerce site and the "payment processing company Company" that reduces the burden of system development and accounting tasks. We will thoroughly explain the implementation methods using these tools.

Whether you are considering launching a new e-commerce site or if you want to review the payment environment of your existing site, please read to the end.

What is Merpay (Online payment)? Three reasons to implement it on your e-commerce site

Merpay is a smartphone payment service provided by Merpay Corporation. While you might think of barcode payment in physical stores, you can smoothly use it as an "ID payment" on online e-commerce sites. Introducing Merpay as an payment method for e-commerce sites offers powerful benefits to both end users and businesses, including:

Reason 1: Utilizing Mercari's membership base and "Mercari sales revenue"

Merpay 's greatest appeal is that you can directly access the strong customer base of the flea market app Mercari. Merpay can use the "sales proceeds" earned from selling unwanted items on Mercari directly for shopping on the e-commerce site. The incentive of "even if you don't have cash or credit cards on hand, you can buy because you have sales proceeds" is extremely powerful, making it easier to attract young people and housewives who regularly use Mercari as new customers for your own e-commerce site.

Reason 2: Preventing cart abandonment (abandonment) and improving CVR

One of the biggest challenges in running an e-commerce site is "cart abandonment." For Merpay, simply enter a preset password or perform biometric authentication to complete the payment. Even if you don't have a credit card on hand, you can complete your purchase immediately, lowering the barrier to buying and helping to prevent cart abandonment.

Reason 3: Able to reach groups without credit cards

Merpay offers "Merpay Smart Payment," which allows you to pay all your bills together the following month, as well as prepaid payments from bank accounts. This enables a safe and easy payment experience for those who do not have credit cards or are hesitant to enter card information online.

Merpay Two Implementation Routes: The Difference Between 'Direct contract' and 'payment processing company Company'

There are two ways to introduce Merpay to your own e-commerce site: "contract directly with the service provider (Merpay)" and "contract through the payment processing company company." To get straight to the point, considering the burden of development resources and accounting work, we recommend implementing using payment processing company companies.

Merpay payment processing company How to Choose a Company and Comparison Points for Implementation

To select the best partner to support your business growth, check the following three points.

(1) "Integrated Collaboration Capability" with Various payment method

If you want to add other ID payment or buy now pay later payment in the future, it is important to cover a rich payment method within a single infrastructure. Choosing a highly scalable service helps reduce additional development costs.

(2) Streamlining accounting operations through "centralized management and deposit cycles"

Minimize the burden on your back-office department by choosing a payment processing company company that allows you to view all payment method sales data in one dashboard and provide unified payment dates for bulk payments.

(3) Robust Security System

To prevent fraud targeting e-commerce sites, it is essential to select companies that have proprietary fraud detection solutions.

For online Merpay implementation, use GMO Payment Gateway.

If you are considering Merpay implementation, we recommend PG Multi-Payment Service of GMO payment gateways leading the domestic payment processing industry. We offer over 30 types of diverse payment method in one stop, and since sales proceeds are deposited in a single transaction, you can also reduce your workload.

Additionally, with robust infrastructure and advanced security supporting Transaction value 21 trillion yen (*) of processing, we firmly protect your business. au PAY If you have any concerns about implementation, please feel free to contact us.

*As of the end of September 2025, consolidated figures