I sell collectibles on Ebay in my free time as well as on Mercari. How would I file this on my next year's taxes and how can this affect them? Would this affect any financial aid I receive as I am a full-time college student as well.
In terms of how your business profit will affect financial eligibility, I would suggest you check with your educational institution or FAFSA, as there are numerous factors and various types or aid available.