A Roth IRA is an approved retirement savings program. It deals with two things, the taxation at the time of deposits and the taxation at the time of withdrawal. One of the beauties of the plan is that taxes are not due during the accumulation phase of the plan. The money accumulating in a Roth IRA can be made up of interest or capital gains. These are treated the same way, deferred and not taxed during accumulation nor upon distribution as long as minimum requirements are met.