Pension Accounting
The accounting standards and methods governing how companies recognize and disclose defined benefit pension obligations and plan assets.
What is Pension Accounting?
Pension accounting covers the rules for measuring, recognizing, and disclosing a company's obligations and assets related to employee retirement benefit plans. Under GAAP (ASC 715) and IFRS (IAS 19), defined benefit pension plans require companies to estimate the present value of future pension payments to current and retired employees (the projected benefit obligation, or PBO) and compare it to the fair value of plan assets set aside to fund those payments. If plan assets are less than the PBO, a net pension liability is recorded on the balance sheet; if assets exceed the PBO, a net pension asset is recognized. The annual pension expense recognized on the income statement includes service cost (new benefits earned), interest cost (unwinding of the discount), and expected return on plan assets, among other components. Actuarial assumptions—including discount rates, salary growth, and mortality tables—heavily influence the reported figures and are a common source of earnings management.
Example
General Motors carries a significant defined benefit pension obligation. As of its 2024 10-K, GM reported a U.S. pension benefit obligation of approximately $50 billion against plan assets of $47 billion—a net underfunded status of $3 billion. A 25-basis-point decrease in the discount rate would increase the PBO by roughly $1.5 billion, illustrating how sensitive pension accounting is to interest rate assumptions.