AZ4 - Calculate Interest Rate

Calculate the interest rate when given the amortization of a loan       
or regular annuity.  Useful for 'Truth in Lending' calculations.  AZ4 
accepts input in the forms normally associated with a real estate loan.  
If you know the principle amount, the number of payments, and the 
amount of the payment, this program will tell you the interest rate.

Input values are:

    Loan Amount - The loan amount in dollars and cents.  Do not use 
    commas or dollar signs.  Decimals are permitted.

    Total Number of Payments - Enter the number of payments; i.e. a 30 
    year loan with 12 payments a year is a 360 payment loan.

    Regular Payment Amount - Payment amount in dollars and cents.

    Assumed Annual Interest Rate - The interest rate, as a percentage, 
    that you think applies to the loan.  If you do not know, guess.  It 
    only slows the program down a little rate.

This program solves the present value equation for the true annual 
interest rate and gives the answer as a percentage.  If you desire hard 
copy, use the print screen function on your computer.