What are the key financial reporting differences between defined benefit and defined contribution pension plans?

The distinction between defined benefit (DB) and defined contribution (DC) plans fundamentally affects financial statement complexity, risk allocation, and reported obligations. Understanding both sides is critical for CFA FRA.\n\nCore Difference:\n\nIn a DC plan, the employer's obligation ends once the contribution is made. The employee bears all investment risk. In a DB plan, the employer promises a specific future benefit, so the company bears investment risk, longevity risk, and inflation risk.\n\n`mermaid\ngraph TD\n A[\"Pension Plan Types\"] --> B[\"Defined Contribution\"]\n A --> C[\"Defined Benefit\"]\n B --> D[\"Employer contributes
fixed amount\"]\n D --> E[\"Expense = Contribution
No B/S liability\"]\n C --> F[\"Employer promises
future benefit\"]\n F --> G[\"PBO recorded
on balance sheet\"]\n F --> H[\"Plan assets
offset PBO\"]\n G --> I[\"Funded Status =
Plan Assets - PBO\"]\n H --> I\n I -->|\"Underfunded\"| J[\"Net Pension Liability\"]\n I -->|\"Overfunded\"| K[\"Net Pension Asset\"]\n`\n\nBalance Sheet Treatment:\n\nMeridian Manufacturing sponsors a DB plan with the following data:\n\n| Item | Amount |\n|---|---|\n| Projected Benefit Obligation (PBO) | $48.5 million |\n| Fair value of plan assets | $41.2 million |\n| Funded status | -$7.3 million |\n\nMeridian reports a $7.3 million net pension liability on the balance sheet. Had this been a DC plan, no such liability would exist.\n\nIncome Statement:\n\nDB pension cost has multiple components:\n- Service cost: $3.1M (current year benefits earned by employees)\n- Interest cost: $2.425M (PBO x 5% discount rate)\n- Expected return on plan assets: -$2.884M (assets x 7% expected return)\n- Amortization of prior service cost: $0.22M\n\nNet periodic pension cost = $3.1M + $2.425M - $2.884M + $0.22M = $2.861M\n\nFor a DC plan, pension expense simply equals the contribution made during the period, with no actuarial estimates required.\n\nActuarial Assumptions:\n\nDB plans require management to estimate discount rates, salary growth rates, employee turnover, mortality tables, and expected returns. Each assumption creates room for earnings manipulation. Analysts should compare assumptions across peer companies to detect aggressive or conservative choices.\n\nAnalyst Adjustments:\n- Reclassify only service cost as operating expense; treat interest cost and expected return as financing items\n- Compare funded status trends over time to assess contribution adequacy\n- Watch for assumption changes that artificially reduce reported pension expense\n\nFor comprehensive pension analysis techniques, explore our CFA FRA course.