Banco Popular offers a US$ savings account, I've got one but I can't remember what the interest rate is. I've had it for around 4 years and find it easy, convenient to use. No charges except when a deposit is made by SWIFT or some such transfer and then its not very big. Occasional hiccups if you want do draw out more than US$ 1000. the bank maybe a bit short on dollars, half today the rest tomorrow. You can have the bank change it straight into RD$ but you still do not get as good a rate as Caribe. From talking around the other banks seem to offer the same, I know Scotia does.