Quick Calcs
After logging in to the Webcalcs program, you will notice a section called Quick Calcs on each page. This is a handy tool that you should spend some time exploring. There is no cost for using this tool and it can be extremely useful when either auditing a loan or just trying to calculate a payment quickly.
After clicking on the Quick Calcs dropdown menu, you will see that it shows; Principal, Rate, Loan Term, Payment, Interest Only Payment, Interest Only Rate and Balance. If you check the item that you need to solve for and enter the known fields, the system will solve for the unknown.
Quick Calcs Features and Benefits
 This is on the system to assist in disclosure and there is no charge.
 A quick tool for checking a disclosed payment.
 Can be used to determine what the index value was on a disclosed ARM.
 Compare the difference between an interest only payment and a fully amortizing payment.
 Find a balance without having to run an amortization schedule.
Frequently Asked Question

I am trying to audit an adjustablerate loan and have no idea what the index value was; can I use Quick Calcs to help me?
Yes, Simply fill in the principal amount, payment and loan term and solve for interest rate. From this result, subtract the margin amount found in the note; the resulting number is the index amount. Going one step further, using the links provided you can determine if the index used was correct for the date on which the disclosure was completed.

I am trying to see what rate was used when a 3 year ARM adjusted; can this help me?
You must know the balance at the time of the rate adjustment and can use Quick Calcs to solve for balance. Then enter this balance (as principal), the payment and the remaining term. Solve for interest rate.