Tax Form 1040 Instructions 2014: Fill & Download for Free

The law allows you to exclude rental income for less than 15 days. So do nothing.Here's the quote from the IRS @Publication 527 (2014), Residential Rental PropertyUsed as a home but rented less than 15 days. If you use a dwelling unit as a home and you rent it less than 15 days during the year, its primary function is not considered to be rental and it should not be reported on Schedule E (Form 1040). You are not required to report the rental income and rental expenses from this activity. The expenses, including qualified mortgage interest, property taxes, and any qualified casualty loss will be reported as normally allowed on Schedule A (Form 1040). See the Instructions for Schedule A (Form 1040) for more information on deducting these expenses.

First of all, when you work "off the books", so to speak, what you are actually doing is running your own business, with your skills as the primary product that you are selling. What you should do, under these circumstances, is manage your work as though you were managing a business - which means keeping your own set of books, recording income and expenses related to that income. If you haven't been doing that, I suggest that you start now. This doesn't need to be complicated - a simple spreadsheet will do - but come tax time you'll be glad you have that record.When it comes time to file your tax return, and assuming that you are a US citizen or resident alien, you will report your income and expenses from this work on Schedule C (Form 1040), Profit or Loss From Business. The net income from this work will carry to your federal Form 1040, and you will follow the instructions to compute and pay the appropriate taxes (both income and self-employment).Assuming that you just started doing this work in 2013 and didn't have any requirement to file a return in 2012, I don't see any reason for you to take any other action at this stage. If you find that your net profit is large, then you should definitely start paying quarterly estimated taxes in 2014 (see Estimated Taxes).I'd suggest that you see a local tax professional, preferably one who has experience in preparing returns for small businesses, to help give you detailed guidance on your specific situation.

Yes.What if I was an Illinois resident for part of the tax year?If you were a resident of Illinois during part of the tax year, you are considered a part-year resident and must complete and file Form IL-1040 and Schedule NR if you:earned or received income from any source while you were an Illinois resident,earned or received income from Illinois sources while you were not an Illinois resident, orare entitled to receive a refund of Illinois Income Tax.As a part-year resident, the rules you use to determine Illinois income and tax depend on whether or not you were a resident of Illinois when you received the income.If you were a resident of Illinois when you received the income, you will (within certain limitations) be taxed on 100 percent of the income you received while you were a resident, regardless of the source.If you were a nonresident of Illinois when you received the income, you will be taxed only on the income you received from Illinois sources.Source: I can't link to the .pdf, but you should Google "Schedule NR IL-1040 Instructions" for the actual instructions.Incidentally, you're a bit late to be asking this question. The filing due date was April 15.