Korea's Big Bank Deposits Hit a Record 960 Trillion Won, Mostly Corporate Cash

Money sitting in South Korean bank accounts that each hold more than 1 billion won (about $737,000) reached a record 960.1 trillion won at the end of June 2026, according to Bank of Korea data. That is about $707 billion at 1,357.20 won per dollar, Woori Bank's November 6 reference rate. The balance jumped by more than 91 trillion won in just six months, and the central bank estimates that most of these accounts belong to companies. Strong exports, led by semiconductors, are the main reason cited for the surge.

How Big Is the Jump?

The Bank of Korea compiles deposit data by account size twice a year. Among savings-type deposits at Korean commercial banks, accounts with balances above 1 billion won held 868.5 trillion won at the end of 2025. By the end of June 2026 that figure had risen to 960.1 trillion won, an increase of 91.6 trillion won (about $67.5 billion), or 10.6%, in six months. It is the largest half-year increase since the data series began in 2002, and the pace nearly doubled from the 5.7% growth seen in the second half of 2025.

Against June 2025, when the balance stood at 821.4 trillion won, the increase is 138.7 trillion won, or 16.9%. The long-run climb has been steep: the balance first passed 700 trillion won in June 2021, crossed 800 trillion won at the end of 2024, and has now entered the 900 trillion won range.

Savings-type deposits in this data include time deposits, installment savings, corporate free savings deposits and savings accounts. Ordinary checking-style demand deposits are not part of this series, so the figures exclude everyday checking-type balances.

Who Owns 9.4 Billion Won Accounts?

The number of accounts above 1 billion won rose to 102,000 from 100,000 at the end of 2025, a 2% increase. Based on these rounded account counts, the balance grew about five times faster than the number of accounts.

Our own math gives a sense of scale: 960.1 trillion won divided by 102,000 accounts works out to an average of roughly 9.4 billion won (about $6.9 million) per account. Few individuals hold that much in a single bank account, which helps explain why the Bank of Korea estimates that most of these accounts are corporate. An average can be pulled up by a handful of very large accounts, so the typical account is likely smaller than this figure.

The Bank of Korea attributes the increase to stronger corporate earnings in the first half, with exports of semiconductors and other key products running strong this year.

Which Accounts Grew Fastest?

Time deposits in accounts above 1 billion won reached 666.2 trillion won, up 59.0 trillion won, or 9.7%, in six months. Corporate free savings deposits, where companies and sole proprietors park cash they expect to use soon, climbed to 278.1 trillion won (about $204.9 billion), up 30.5 trillion won, or 12.3%. That is a sharp turnaround from the first half of 2025, when this category shrank by 2.4%.

Large accounts now hold 50.6% of all savings-type deposits at Korean banks, back above half for the first time since June 2022. Separate Bank of Korea flow-of-funds data point the same way: non-financial corporations' net fund investment rose to 67.1 trillion won in the second quarter from 20.8 trillion won in the first.

A corporate free savings deposit is a flexible business account in Korea that pays some interest while letting a company withdraw cash fairly freely. It works like a parking spot for money a firm plans to spend soon.

What Does the Record Tell Us?

The fastest growth came in the most flexible type of account. In our reading, that suggests companies prefer to keep their extra cash close at hand rather than lock it up for long periods. It also means a large pool of corporate money has not yet been spent on new factories or equipment.

That makes two indicators worth watching. The first is the next half-year release of the same data, which will show whether the balance keeps climbing or starts to fall. The second is corporate capital spending: if deposits shrink while equipment investment rises, the cash is being put to work. Export results, especially for chips, will help show whether the inflow can continue.

For readers outside Korea, the figures also show how much corporate cash has built up at domestic banks during the export upswing. Whether that cash is eventually spent, saved or returned to shareholders will shape both bank balance sheets and investment trends in the year ahead.

Sources: Bank of Korea

The bottom line: deposits in Korean bank accounts holding over 1 billion won reached a record 960.1 trillion won in June 2026, an average of about 9.4 billion won per account, and most of that money is estimated to belong to companies flush with export earnings.