You can increase its interest rate if you make these transactions

Condition	Additional rate	Applied until expiry
Have opened account 'KB국민ONE통장' in the bank Only available for the first year after the first account establishment.	0.2 %	Yes
Open this account online Only available for the first year after the first account establishment.	0.2 %	Yes
Set automatic reestablishment and redeposit of account	0.3 %	Yes
Total (The sum of preferential and basic rates can't exceed the account's maximum interest rate)	0.7 %