Our Roth IRA calculator shall enable you to calculate your individual Roths retirement plan. Our tool points out how this plan performs related to a taxable account. Advantages of the Roth IRAs compared with a traditional IRAs might be that on the one hand it is not tax deductible, so that withdrawn money is mostly tax free. If you contribute to accounts with traditional Iras you have to pay taxes for the amount of funds when you retire. But now lets start with savings calculation by the Roths IRA Tool.