You buy a house for $100,000 and the deal closes on the 26th of May (you sign the papers). The closing involves giving the buyer the cheque for the $100,000. Your lender advanced you the mortgage money of $100,000 but the lender may not want the monthly payments to fall on the 26th of each month. Your lender wants the monthly payments to be on the first of each month. June 1st becomes the Interest Adjustment Date and July 1st becomes the first blended monthly payment.
The interest adjustment method is accessed from the Preference Menu as
Alt, R, I, choose C or S
The default as shipped is Compounded, and it is whatever the type of compounding that is currently selected.
The Exact Simple Interest method is available for backward compatibility.
Some lenders prior to 1995 used this latter method and variations of it. Most lenders today believe that if the body of the mortgage was calculated in accordance with semi-annual compounding then the interest adjustment should also be semi-annual compounding.
Just a reminder, whatever your preferences are be sure to click on save before leaving the Preference Menu in order to save them MORTGAGE2 PRO.PRE file.
For example; if a $100,000 ($100,000 mortgage at 7% amortized for 5 years with monthly payments of $1,975.41 using semi-annual compounding) was advanced on May 26th the interest for six days for the use of the $100,000 is $113.16 and payable to your lender on June 1st. One month later, on July 1st the first blended monthly payment of $1,975.41 is due or owing to your lender. The June 1st payment is all interest and serves to move the advance date forward.
MM/DD/YYYY is the default format.
The Interest Adjustment Date, IAD, always defaults to the advance date unless you enter a different date. The IAD cannot be earlier than the advance date only equal or later.
For many reasons most lenders prefer payments to be at the first of the month. When you are selling your house the deal may close at any time thus interest adjustments must be made to make the loan payments coincide with the lenders payment preference.