taxCalc
			This method is a short hand version of LOS taxCalc. The taxCalc method calculates tax for a provided base rental amount and interim rent assessment as estimated to be on the first invoice and return the tax amounts for each of the invoices along with the rate used. The method returns the expected tax amount for a given base rental amount to be charged monthly and for the 2nd and 3rd invoice. 
			
			The taxCalc method assumes the following conditions to successfully process and calculate tax:
			
public java.lang.String taxCalc(java.lang.String input)
java.rmi.RemoteException - Exceptions that may occur during the execution of a remote method call.