shxjm

是不是这样理解.
因为 coupon payment is reported as operating activities in the cash flow statement
对于 discount bond, coupon payment > interest expense, 所以( coupon payment - interest expense) 应该 add back to net income.

而对于 premium bond, 因为 coupon payment < interest expense, the difference can be viewed as a source of borrowing, 所以应该 subtract from the net income.