To support the start-up costs of a consulting business, I plan on selling unrelated assets (eBay) generating at most a total gain of less than $10k. This income would not be attached to any business but since it would be over $600 I'm assuming it would be seen as a side gig in 2024? How do I file this in Maryland apart from my typical job income. Then at a later time with these funds I would then form a sole proprietorship consulting business most likely in 2025 also in Maryland. I believe this business would be an SSTB within the QBI phase-in range meaning it would earn less than $182,100 of generated income. Please advise regarding quarterly filing for these two different sources of income.
