You can increase its interest rate if you make these transactions

Condition	Additional rate	Applied until expiry
More than 500,000 KRW of monthly spending with credit or check card of the bank	0.2 %	No
More than 1 completed direct debits with 입출금자유예금 account in the bank	0.1 %	No
More than 2 completed direct debits with 입출금자유예금 account in the bank	0.1 %	No
More than 3 completed direct debits with 입출금자유예금 account in the bank	0.1 %	No
More than 4 completed direct debits with 입출금자유예금 account in the bank	0.1 %	No
More than 5 completed direct debits with 입출금자유예금 account in the bank	0.1 %	No
Paying for loan interest of the bank	0.2 %	No
Deposit or saving money into opened account '주택청약종합저축' in the bank	0.1 %	No
More than 500,000 KRW of payroll deposit	0.3 %	No
More than 1 qualifying pension or government payment deposit
More than 1 card member store payment deposit by the bank
Total (The sum of preferential and basic rates can't exceed the account's maximum interest rate)	1.3 %