effective interest rate

ASC 470-30 governs how a *borrower* accounts for a participating mortgage loan — a mortgage in which the lender is entitled to share in appreciation in the fair value of the mortgaged real estate project, in its results of operations, or both. If the lender participates in fair value appreciation, the borrower recognizes a participation liability at the fair value of the participation feature at loan inception with an offsetting debt discount, remeasures the liability to current fair value each reporting period (adjusting the discount), and amortizes the discount to interest expense using the interest method. Participations in results of operations are charged to interest expense in the period incurred with a credit to the participation liability.

ASC 835-30 governs when and how interest must be "imputed" on notes receivable and payable whose face amount does not reasonably represent the present value of the consideration exchanged — typically non-interest-bearing notes or notes with an unreasonable stated rate. In those cases the note and the related sales price/cost are recorded at the fair value of the property, goods, or service or at an amount approximating the fair value of the note (whichever is more clearly determinable), and any resulting discount or premium is amortized to interest income or expense using the interest method. Discount, premium, and debt issuance costs are presented as direct deductions from or additions to the face amount of the note, not as deferred charges or credits.