Calculating Interest Due

The interest calculation method is generally specified in the Loan DocumentsLoan DocumentsAll documents evidencing, securing, or guaranteeing the debt obligation executed for a Mortgage Loan and approved by Fannie Mae. .  ServicersServicersPrimary Person responsible for servicing the Mortgage Loan (e.g.,  the originator, the selling Lender, or a third-party servicer). are required to calculate interest due for each Mortgage LoanMortgage LoanMortgage debt obligation evidenced, or when made will be evidenced, by the Loan Documents or a mortgage debt obligation with a Fannie Mae credit enhancement. as required by the Loan DocumentsLoan DocumentsAll documents evidencing, securing, or guaranteeing the debt obligation executed for a Mortgage Loan and approved by Fannie Mae. .  If the Loan DocumentsLoan DocumentsAll documents evidencing, securing, or guaranteeing the debt obligation executed for a Mortgage Loan and approved by Fannie Mae. do not contain any information regarding the interest calculation method, then ServicersServicersPrimary Person responsible for servicing the Mortgage Loan (e.g.,  the originator, the selling Lender, or a third-party servicer). should assume a 30/360 accrual method.