Effective Interest Method
The effective interest method allocates interest income or expense over the life of a financial asset or liability using a constant rate – the effective interest rate – applied to the carrying amount.
Related Standards
Explanation
The effective interest rate is the rate that exactly discounts the expected future cash payments or receipts over the life of the instrument to its initial carrying amount. Each period:
• interest = carrying amount at the beginning of the period × effective interest rate,
• the carrying amount increases by interest and decreases by payments.
Because interest is calculated on the outstanding balance, interest on amortizing instruments – such as leases with level payments – is higher in early periods and declines as the balance is repaid.
Under US GAAP, the interest method is described in ASC 835-30; under IFRS, the method is used under IFRS 9 for assets and liabilities at amortized cost.
Why It Matters
The same mechanism is used to recognize interest on lease receivables for lessors (using the interest rate implicit in the lease), on lease liabilities for lessees, and on significant financing components in revenue contracts. Systems must produce amortization schedules that split each payment into interest and principal – a key requirement for lessor accounting in SAP Revenue Accounting and Reporting (RAR).
Related Terms
Interest Rate Implicit in the Lease · Net Investment in the Lease · Lease Liability · Significant Financing Component · IFRS 9
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