Been through this confusion before! One thing to watch out for - make sure you're using the correct paper size if you're mailing physical forms. The IRS is super picky about this. They want the official forms printed on 8.5 x 11 paper with no modifications to the layout or scaling. I learned this the hard way when they rejected my forms and almost hit me with a penalty.

Just to add another perspective - if you're really pressed for time and worried about getting everything right, consider reaching out to a local CPA or tax preparer who can handle this quickly. Many of them offer W-2/W-3 preparation services for a reasonable fee (usually $50-150 for a small S corp) and can often turn it around same-day or next-day. They'll handle all the form requirements, filing deadlines, and can even e-file for you. Sometimes it's worth paying a professional to avoid the stress and ensure compliance, especially when you're cutting it this close to the deadline.

Just wanted to add one important thing about home office deductions that hasn't been mentioned yet. If you're taking depreciation on home improvements for the business portion of your home, you need to be aware of the impact when you sell your house! The IRS will expect you to "recapture" that depreciation, meaning you'll pay taxes on it when you sell. It's called depreciation recapture and it's taxed at 25%.

Has anyone used TurboTax to handle home office depreciation for improvements? I'm in a similar situation with my graphic design business and I'm wondering if the software walks you through it correctly or if I should just hire a CPA this year.

As someone who was completely lost on this topic last year, I can confirm what everyone's saying - the tax tables are ONLY for federal income tax. I made the mistake of thinking that was my total tax bill and was shocked when I looked at my actual paystub! What really helped me understand this was looking at my year-end W-2. Box 1 shows your wages subject to federal income tax, Box 2 shows the actual federal income tax withheld (this should roughly match what you'd calculate from the tax tables), then Box 4 shows Social Security tax withheld and Box 6 shows Medicare tax withheld - all completely separate amounts. So when you're budgeting, yes, you need to account for all three taxes. The silver lining is that as an employee, you don't have to worry about calculating the FICA taxes yourself - your employer does that math and takes it out automatically. You just need to make sure your federal income tax withholding is on track by adjusting your W-4 if needed. The tax filing process will make a lot more sense once you see how these different taxes are handled separately on your return!

This thread has been incredibly helpful! As someone who just switched from being a contractor to a W-2 employee, I was making the same mistake of thinking the tax tables showed my total federal tax burden. One thing I learned the hard way during my contractor days - if you're ever self-employed or doing freelance work on the side, you'll need to calculate and pay the Social Security and Medicare taxes yourself through self-employment tax on Schedule SE. That's when you pay both the employee AND employer portions (12.4% for Social Security + 2.9% for Medicare), which really adds up. But as a regular employee now, seeing those three separate line items on my paystub makes everything much clearer. The tax tables are just one piece of the puzzle, and understanding that distinction is crucial for proper tax planning. Thanks everyone for breaking this down so clearly!

One more thing - if you're doing delivery driving, don't forget about quarterly estimated tax payments for 2025! Since you have self-employment income, you should be making quarterly payments to avoid penalties. I learned this the hard way my first year.

Just wanted to add that you should also consider keeping a business diary or log to document your profit motive and business activities. This can be really helpful if you ever face an audit, especially with the hobby loss rules everyone's mentioned. For your real estate work, document things like: time spent researching properties, networking events, continuing education, marketing efforts, client meetings, etc. For delivery driving, track peak hours worked, strategies to maximize earnings, vehicle maintenance schedules, etc. The IRS looks at factors like whether you operate in a businesslike manner, your expertise in the area, time and effort spent, expectation of asset appreciation, and your success in other activities. A simple log showing you're actively trying to improve profitability and treat these as real businesses (not hobbies) can go a long way. Also, since this is your first year with Schedule C, consider having a tax professional review your return before filing. The peace of mind might be worth the cost, especially given your concerns about audit risk.

Watch out for state estimated taxes too!!! Everyone's talking about federal, but depending on your state, you might need to make a state estimated payment as well. I forgot this last year when I started my side business in November and got hit with a state underpayment penalty even though I was fine on the federal side.

Just wanted to add another perspective as someone who went through this exact situation two years ago with a graduate research assistantship that started in November. One thing that really helped me was documenting everything about the timing and nature of my income for when I filed my taxes. I kept records showing that the fellowship was unavailable to me until December (had the offer letter with start date), my previous quarters' minimal income from part-time work, and calculated what my "annualized income" would have been if I tried to project the December amount across the whole year (which would have been wildly inaccurate). When I filed my return, I used Form 2210 and was able to show the IRS that requiring estimated payments based on projected annual income from a single month would have been unreasonable. The annualized income installment method completely eliminated any underpayment penalty. The key is being able to demonstrate that your income pattern was genuinely unpredictable and that making estimated payments earlier in the year based on your actual income at that time wouldn't have captured this December windfall. Keep good records and you should be fine!