The Bankwest Easy Saver account offers an introductory bonus rate of 5.35% p.a. for new account holders for the first 4 months after opening the account. After the introductory period ends, the rate will revert to the standard variable rate, currently 4% p.a.
Note that the interest you can get with this account is lower if your balance is $250,001 or higher. In this case you get a 4-month introductory rate of 4.75% and then an ongoing rate of 2.00% after that.
There are no monthly deposit conditions to meet and you can make withdrawals at any time while still being eligible for interest.