Kakao Pay's customer intake is promotion-led, combining a money-loading channel for teens that drew 180,000 users during its first eight weeks with the Kakao Pay Rewards and Kakao Pay Membership programmes, which award points and cashback at over 800,000 online and offline stores.

Users of both KakaoTalk Pay and the Kakao Pay app produce over 2.4 times the revenue of Kakao Pay app-only users. In a 2023 survey, 94.6% of South Korean mobile messenger users reported using KakaoTalk.

Kakao Pay's measured growth is coming from offline and cross-border transaction channels. From 2023 to 2024, the total number of offline transactions made on Kakao Pay grew by 33%, and total payment volume rose by 125%. From January 2023 to January 2024, transactions involving foreign tourists paying in South Korea increased fourteenfold.

A money loading channel for teens attracted 180,000 users within eight weeks of its launch, and at the end of 2024 Kakao Pay had 24 million monthly active users.

The Korean payment category is projected to move toward digital wallets through 2030, which favors Kakao Pay. By 2030, credit cards are projected to account for 40% of payments and digital wallets for 46%, making wallets the larger category. Government tax deductibility keeps credit cards the structurally preferred payment type.

Most wallet transactions are credit-card-funded, so wallets function as a mobile interface for card payments. A 2023 survey found that 94.6% of mobile messenger users in South Korea use KakaoTalk. At the end of 2024, Kakao Pay had 24 million monthly active users.

Kakao Pay's position is shielded by scale among three wallets but exposed to a tax code that favors the card rail beneath it. Government tax deductibility makes cards the structurally preferred payment type. Kakao Pay, Naver Pay, and Samsung Wallet hold near-total dominance.

The majority of wallet transactions are credit-card-funded, so wallets work as a mobile interface for card payments, and wallet payments are settled through credit-card rails. Credit cards hold 49% of online transaction value in 2025, while digital wallets hold 35%.