How does a pension plan curtailment affect the projected benefit obligation (PBO) and the income statement?

A pension curtailment occurs when an employer significantly reduces the expected years of future service of current employees (e.g., through mass layoffs) or eliminates the accrual of benefits for a significant number of employees for all or some of their future services (e.g., freezing the pension plan).

Effect on PBO:

A curtailment generally reduces the PBO because fewer (or no) future benefits will accrue. The reduction creates a curtailment gain (or sometimes a loss if termination benefits are enhanced).

Accounting Treatment (IAS 19 / ASC 715):

Under IAS 19 (revised), curtailment gains and losses are recognized immediately in profit or loss in the period the curtailment occurs.

Under ASC 715 (US GAAP), the treatment is similar — curtailment gains/losses are recognized when the curtailment event occurs and the effects are estimable.

Components of a Curtailment Gain/Loss:

1. Change in PBO — the reduction in the present value of future benefits
2. Recognition of unrecognized items — any prior service cost (from plan amendments) related to the curtailed benefits must be immediately recognized in P&L

Worked Example — Sterling Industries:

Sterling announces it will freeze its defined benefit plan, eliminating all future benefit accruals for its 1,200 participants.

Additionally, Sterling has $8,000,000 of unrecognized prior service cost in AOCI related to a 2023 plan amendment.

Curtailment Gain Calculation:

• Reduction in PBO: $33,000,000 (gain)
• Less: Immediate recognition of prior service cost: ($8,000,000) (loss)
• Net curtailment gain: $25,000,000

Journal Entry:

Analytical Implications:

1. One-time gain — the $25M gain significantly boosts reported income but is non-recurring. Analysts typically exclude it from normalized earnings.
2. Improved funded status — the funded status improves by $33M, reducing the net pension liability on the balance sheet.
3. Future pension expense drops — with no future accruals, service cost goes to zero. The only remaining pension cost is interest on the existing PBO minus expected return on plan assets.
4. Strategic motivation — companies sometimes curtail plans specifically to reduce balance sheet liabilities and boost short-term earnings.

Key Exam Points:

1. Curtailment gains/losses are recognized immediately in P&L.
2. Unrecognized prior service cost related to curtailed benefits must also be immediately recognized.
3. Curtailment vs. settlement: curtailment reduces future benefit accruals; settlement eliminates the obligation entirely (e.g., lump-sum payouts).
4. The PBO reduction from curtailment is separate from any actuarial gains/losses.

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