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If you have any type of investments or stocks, you may often wish to know the real rate at which your money is growing. This calculator calculates the compound interest rate based on dates of all your previous investments and the current balance. By knowing the growth rates for different periods of time, you may decide to fine-tune your investment strategy. In addition, the calculator provides account management by storing multiple account information with reminders. The account can be assigned in any currency. Find the consolidated account balance in any currency. These features will make the calculator useful for long-term usage. To calculate the real interest rate, enter all the previous investment information (date of investment and the amount of investment). Then, enter the current date and balance, and the rate calculator will calculate the interest rate! It is that simple! You can also use this calculator for calculating your interest rate between the two periods to see the performance in that period. This can be creatively used for determining weekly, monthly, quarterly, or yearly interest rates. The calculator also makes a projection of your investment accumulated, in say 10 years. The projection is flexible to include a regular periodic investments and tax. This gives you a more realistic projection. The authors of this software believe that magic of compound interest on investments and right portfolio is one of the great ways to get good returns in 10-20 years. The authors with good background in mathematics and computers have created this calculator for their use! The free shareware version has enough goodies to make you excited about investments. So try it and register it only if you like the software! The Help file describes the working of the Rate Calculator, the magic of compound interest, some tips and links. For mathematically savvy persons, we describe the mathematical formulas used in calculating rates and projection.