09/04/2026
The hobby-loss rule is one of the most punishing outcomes in the tax code: if the IRS reclassifies your side business as a hobby, your income stays fully taxable but your expenses become nondeductible (permanently, as of 2026). The IRS uses a nine-factor test that boils down to one question — are you in it to make a profit? There's a safe harbor: show a profit in three of the last five years and you're presumed to be a business. What actually protects you is running it like one: a separate account, real books, a written plan, and course-correction when you lose money. Read more: geigertax.com/blog/hobby-loss-rule-side-business-audit
General info, not tax advice — talk to a preparer about your situation.