pension expense - 10% corridor following, correct, question

svgleeson

Massively confused here.

So we are saying if the past service cost and acturial gains and losses exceed 10% of greater of (1) PBO or (2) Market valude of assets, we amortise.

If it is less than 10%, we defer.

My question is, am I correct that in no circumstance do we simply apply the following calculation?

Current Service Cost
+ Interest Expense
- Expected Return on plan assets
+/- Past Service Cost
+/- Acturial Gains and Losses