Is pension income considered "active" or "passive" income?

[Hellogoodby]

This is to determine whether passive activity losses apply rather than 179 expenses

[Critter-3]

.

[dmertz]

Pension income has nothing to do with passive activity losses or section 179.  It is not passive activity income.  See IRS Pub 925 where it lists items that are not passive activity income:  https://www.irs.gov/publications/p925#en_US_2021_publink1000104595