South Korea's four major commercial banks have posted over ten trillion won in interest income in the first half of this year.

According to the banks' public disclosures on Sunday, KB Kookmin Bank, Shinhan Bank, Woori Bank and KEB Hana Bank posted a combined ten-point-75 trillion won in earnings from interest revenue in the first six months of the year, up eleven-point-three percent on-year.

It is the first time that the first half figure topped ten trillion won since 2015, when Hana Bank and the Korea Exchange Bank merged into KEB Hana Bank.

Thanks to the strong results in interest income, the country's four leading banks each posted over one trillion won in net profits in the first half.

Kookmin Bank posted the largest interest income at two-point-nine trillion won, followed by Shinhan, Hana and Woori.