At the moment the interest is 0%
When there is interest, it will say so in the wallet on your account, and there is no difference if they are in your savings account or your direct access account. The interest set by the witnesses is only for SBD.

Interest for STEEM is set in another way.

SBD Interest values can be found in the table labeled Consensus State.

Here you have
Account Creation Fee, Maximum Block Size and SBD Interest Rate