This is how a lease option should work: After securing the go-ahead from a mortgage broker and before moving in, your potential buyer will give you a healthy, nonrefundable deposit to go toward the down payment of the house -- typically, 3 to 5 percent of the purchase price.
The amount of interest that accrues on your loan is determined by a simple daily interest calculation: Your current principal balance Ã The number of days since your last payment Ã Interest rate factor = interest rate Ã· 365.25 (number of days in a year) = Your daily interest rate.
1 Type in the principal owed on your loan or the amount of your investment in the cell for Principal, B1. 2  Divide your annual interest rate by 12 if you want to calculate interest on a monthly basis; divide by 4 if quarterly interest is to be calculated. 3  Place this in cell B2.