You can increase its interest rate if you make these transactions

Condition	Additional rate	Applied until expiry
Daily 절약 제체크 적립 You must set amount of your daily savings(Up to 20,000KRW). It will be automatically saved into this account on every business day.	1.5 %	No
체크카드결제자투리저축적립	1.5 %	No
Total (The sum of preferential and basic rates can't exceed the account's maximum interest rate)	3 %