Defined Benefit Plan - Mark-to-Market (MTM) Immediate Recognition Policy
Recording pension cost under the MTM approach, where all actuarial gains and losses are recognized immediately at year-end in the income statement — eliminating AOCI deferral and creating transparent but volatile pension income/expense.
| Account Name | Type | Debit ($) | Credit ($) |
|---|---|---|---|
| Pension MTM Adjustment - Actuarial Loss (Non-Operating) | Expense (+) | 65,000,000.00 | - |
| Plan Assets - Favorable Actual vs. Expected Return | Asset (+) | 30,000,000.00 | - |
| PBO Increase - Discount Rate Decline | Liability (+) | - | 95,000,000.00 |
💡 Accountant's Note
MTM approach (elected by AT&T, Verizon, GE, IBM, Honeywell): ALL actuarial gains/losses (actual return vs. expected return + PBO remeasurement from assumption changes) are recognized immediately at year-end. Net MTM adjustment = (Actual return − Expected return) + (New PBO at year-end rate − PBO at prior assumptions). In 2022, rising rates caused massive MTM GAINS for MTM companies (PBO fell as discount rates rose). In 2020-2021, falling rates caused large MTM LOSSES. Companies using MTM typically disclose non-GAAP results excluding the MTM adjustment to help investors understand underlying operations.
Practitioner & Systems Framework
💻 ERP Architecture
MTM companies have ZERO AOCI balance for pension after each year-end adjustment — it is reset to zero annually. NPPC for MTM companies = service cost + interest cost only (plus prior service cost amortization if any PSC exists from a recent amendment). The MTM adjustment is recorded only at year-end remeasurement — not in interim periods (interim periods use corridor-method estimates with Q4 true-up). This creates predictable Q1-Q3 pension expense with volatile Q4.
⚠️ Audit Flags
MTM adoption is a change in accounting principle requiring retrospective application and cumulative effect adjustment. Auditors verify consistent application year-over-year — companies cannot selectively use MTM in years of gains and switch to corridor in loss years. Non-GAAP exclusion of the MTM adjustment must be clearly labeled and reconciled to GAAP.
📄 Required Documentation
Accounting policy election documentation (MTM — irrevocable election), year-end actuarial remeasurement showing MTM components, MTM calculation (actual vs. expected return + assumption changes), retrospective application workpaper (if first year of adoption), non-GAAP reconciliation disclosure.
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