How much can I put into an ISA?

Under the Restriction of Special Taxation Act, the annual contribution limit for an ISA is KRW 20 million, and unused limits accumulate for each year that has passed since opening (up to 4 years), for a total contribution limit of KRW 100 million.

If you have joined asset-formation savings or long-term collective investment securities savings, the total limit is reduced by the contract amount of those accounts. You can check the details on limits with the financial company where you opened the account.