American net periodic pension cost has five components where the international version has two, and the three extras all smooth.
What are the components of net periodic pension cost?
| Component | Allegheny Tool Works | Where it sits |
|---|---|---|
| Service cost | $4,350,000 | Operating, with other compensation |
| Interest cost | $3,024,000 | Below operating profit |
| Expected return on plan assets | ($2,677,500) | Below operating profit |
| Amortisation of prior service cost | $400,000 | Below operating profit |
| Amortisation of net actuarial loss | $416,666.67 | Below operating profit |
| Net periodic pension cost | $5,513,166.67 |
Interest cost and expected return appear separately instead of netted. That's a presentation choice and changes nothing of substance. Their net effect of $346,500 differs from the international net interest of $756,000 by the gap between the 8.50% expected return and the 7.20% discount rate, applied to $31,500,000.
Prior service cost arises when a plan is amended and employees become entitled to more for service they have already given. Under ASC 715 the whole increase goes to other comprehensive income at the amendment date and is amortised into profit over the average remaining service period of the employees who will receive it. Allegheny carries $4,800,000 of unrecognised prior service cost with twelve years to run, so $400,000 a year.
Advertisement
Corridor amortisation and where each cost is shown
Corridor amortisation handles accumulated actuarial gains and losses. Read this part of the American rulebook twice. The rule tolerates a band of noise and amortises only what falls outside it. The corridor is 10% of the greater of the obligation and the market-related value of plan assets, which for Allegheny is 10% of $42,000,000, or $4,200,000. The accumulated net loss in other comprehensive income is $9,200,000, so $5,000,000 is outside the corridor and is amortised over the same twelve years, giving $416,666.67. A company may amortise faster if it applies the method consistently, and a few do. Most take the minimum.
Since 2018 only the service-cost component may be presented with other compensation costs. The other four are shown outside operating income and can't be capitalised into inventory or fixed assets. That change removed a real distortion, and it means a modern US income statement and a modern IFRS income statement now put the same kind of item in the same place, even though the amounts differ.
One fact pattern, two rulebooks, and the number that agrees
Set Allegheny Tool Works beside Nandan Forgings on the matching numbers, each rupee figure read across as a dollar figure so the two rulebooks can be compared line by line. Obligation $42,000,000, assets $31,500,000, service cost $4,350,000, discount rate 7.20%, benefits $2,800,000, contributions $5,000,000, actual return $2,710,000, closing obligation $47,800,000. Add the American ingredients: 8.50% expected return, $4,800,000 of prior service cost over twelve years, $9,200,000 of accumulated net loss.
The reported income statements diverge by $407,166.67, with the American one carrying the larger charge, which is 7.9743% above the international figure. Two components explain all of it and they pull in opposite directions:
- The expected-return assumption relieves the US income statement of $409,500, being 1.30% of $31,500,000.
- The two amortisations add $816,666.67 that the international rulebook never puts in profit at all.
Add those and you get $407,166.67 to the cent, which is the point of computing a difference twice. At 21% the after-tax gap is $321,661.67.
What is the same under both rulebooks?
Three things don't differ, and they're the anchors to hold on to. The funded status is $11,390,000 in both. The employer's cash contribution is $5,000,000 in both. And the total charged against comprehensive income is $5,890,000 in both, because the American framework's larger income-statement charge is offset in full by a smaller charge to other comprehensive income, $376,833.33 against $784,000.
That last identity is the one to carry away. Both rulebooks charge the same total against equity in the end. What they disagree about is the timing and the location, and every analyst adjustment in this area is an attempt to undo that disagreement.