Concept · C:pension-obligation-gain-or-loss

Pension obligation gain or loss

Working definition

A change in the benefit obligation arising from assumption changes or experience different from prior actuarial expectations.

On this page
  1. Apply it
  2. Common mistake
  3. Keep the boundary clear
  4. Authority

Pension obligation gain or loss has one role in the employer's benefit accounting. An obligation gain or loss arises when changed assumptions or experience alter PBO relative to the prior actuarial expectation. The actuarial movement report supplies the amount and cause.

Apply it

A supported $400,000 obligation loss increases PBO and enters the current OCI gain-and-loss layer. It is not service cost and does not describe plan-asset performance.

Common mistake

Do not assume that every change in PBO belongs in service or interest cost. Assumption changes and experience differences enter the actuarial gain-or-loss route rather than service or interest cost. That error would bury assumption and experience effects in service or interest cost.

Keep the boundary clear

Accounting explains direction and routes the supplied amount. It does not blend a participant-data correction with economic experience or choose the underlying assumption.

Authority

Read ASC 715-30-35-18 for changes in the projected benefit obligation from gains and losses.

Learning objectives

Put the concept to work

Learning level

Apply this concept

  • Explain and apply pension obligation gain or loss within a reconciled employer benefit-plan workpaper using supplied authoritative and actuarial facts.

Learning resources

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Updated Sep 11, 2026 Review due Dec 11, 2026