Quote from ddunbar:
The answer is no. IB doesn't really want to attract small accounts. That's why they don't pay interest below $10k. There's nothing you can do if you're an active trader with an account below $10k.
You can't ACH transfer to an online money market account simply because: It may take 3-5 days round trip. Meaning 1-2 days to send it, then 1-3 to get it back into your IB account so you can use it.
And as far as I know, IB doesn't allow trading in mutual funds, like Money market mutual funds.
Best bet is to find at least 1 low risk trade per month that'll net you .42% (equiv of 5% per anum).
Thanks!