Are you single? You don't have to file if you get under 13,850 (15,700 if over 65) not counting Social Security. Unless the pension or ss take out withholding.
Do you need to file a return?
https://ttlc.intuit.com/community/filing-and-paying-taxes/help/do-i-need-to-file-a-federal-return-th...
IRS Do I need to file?
Do I Need to File a Tax Return? | Internal Revenue Service
