Sorry to drag this back up, but you are missing something.
If you are an actual business (which is what I would recommend everyone have, regardless of size). you are engaged in the process of attempting to make a profit. It is well within your rights to fail miserably or succeed wildly, both of which will have to be able to be proven in the case that you are audited. That being said, everything goes into one "pot" and any business losses are deducted from your personal income.
Again, you have to have an actual LLC, C or S corp, etc. for any of this to pertain. I recommend an LLC, very cheap and easy to do.
So, if you spend $900 a year on expenses, but only show $200 as income, you have a loss of $700 which will be deducted against your other income. BUT, and here's the big BUT: as a business you will also have: fuel expenses, home office expenses, home office deductions, infrastructure deductions (you built a coop for the chickens, your business!?), meals (that new client insisted on going out to lunch), tools to maintain your coop, feeders, waterers, meds (yes, ACV), etc.. They are all deductible and will reduce your tax liability depending on how much $$ you make or don't. If it is used in the course of doing business, it is deductible. On your forms there is a "Total tax liability" line, all of these things reduce that number.
For several years as a new business you will be able to take a paper loss (within reason) and always be able to write off deductions, depreciation, expenses, etc.. After (insert CPA advice here) years you will need to show a profit(ish) if you want to continue to operate unnoticed to the IRS. We spent several years at a loss (business) only because of depreciation, even though there was a decent profit. It's all about numbers and paper.
Just FYI, I don't do my taxes anymore but have an extremely competent CPA who is always on our side and, just, well, kicks *****. Yep, we pay about $300 a year for tax prep, but I'd pay the guy double if he asked.
'"I don't get out of bed if I can't write it off." Jerry Doyle 2014'
Words to live by.