It appears you do not have to file. On a solely gross income basis, you do not have to file a return for 2023 if you were single and your gross income was below $10,400. The married threshold was $20,800. The over 65 limits are slightly higher.Other reasons to file may not apply to you, but they include reclaiming withheld income tax if any, having self-employment earnings over $400, receiving tax credits from Affordable Care Act health insurance or being eligible for certain education or child tax credits.