For anyone still struggling with this, I've found that the key is understanding that the new W4 essentially works in layers. Step 1 sets your baseline withholding based on filing status and salary. Steps 2-3 adjust for multiple jobs or spouse's income. Step 4 is where you make fine-tuned adjustments. Here's my practical approach: First, use any paycheck calculator to see what your baseline withholding would be with just Step 1 filled out. Then calculate your total desired annual withholding (110% of last year's tax in your case). The difference between these two numbers is what you put in Step 4(c) divided by your remaining pay periods. For the front-loading vs back-loading strategy, I submit updated W4s quarterly. Q1-Q2 I put a smaller amount in 4(c), then increase it significantly for Q3-Q4. Just remember that any RSU vesting or bonuses will have their own withholding (usually 22%) that you can't control with your W4, so factor that into your calculations. The math gets easier once you break it down into these components.

I've been dealing with this exact same situation for the past two years and have finally found a system that works really well. The key insight that changed everything for me was realizing that you need to think about withholding in three separate buckets: regular salary withholding (controlled by your W4), supplemental wage withholding (RSUs/bonuses at flat rates you can't control), and estimated tax payments if needed. Here's my step-by-step process: First, I calculate our total expected tax liability using last year's return as a baseline, adjusting for any major income changes. Then I figure out what will be withheld automatically from supplemental wages (22% for most RSUs and bonuses). Next, I determine how much additional withholding I need from regular paychecks to reach my safe harbor target (110% of last year's tax). For the front-loading vs back-loading strategy, I've found it helpful to create a simple spreadsheet that tracks cumulative withholding by quarter. I start with minimal extra withholding in Step 4(c) for Q1-Q2, then ramp it up significantly for Q3-Q4. This way I'm not giving the IRS an interest-free loan for most of the year, but I still hit my safe harbor requirement. The most important thing I learned is to update your W4 every time you get a bonus or RSU vesting, because those events change your withholding needs for the remainder of the year. It sounds like extra work, but it's actually saved me from both underpayment penalties and massive overwithholding.

My tax person told me that for 2024, the rules are different if the total estate was over $13.61 million. Was your dad's estate really big beyond just the house? If it was over that amount, there might be estate taxes to consider, but most people don't hit that threshold.

Just want to add one important detail that might help - make sure you keep good records of the property appraisal that was done after your dad's death. That appraisal establishing the $285,000 value is what determines your stepped-up basis, and you'll want to have that documentation if the IRS ever questions your return. Also, since you mentioned this happened "last year," make sure the date of death and date of sale are both clearly documented on your Schedule D. The IRS likes to see that timeline to confirm you're handling inherited property correctly. If there was any time gap between when your dad passed and when the appraisal was done, you might want to note that as well. Sounds like you're on the right track with reporting zero gain - just make sure your paperwork is solid to back it up!

I just wanted to thank everyone for the incredibly detailed and helpful responses in this thread! As a newcomer to this community, I'm impressed by how thorough and practical the advice has been. I'm actually facing a similar situation with a different twist - I received a 1099-NEC for what should have been accountable plan reimbursements, but some of the "reimbursements" were actually advance payments that I never ended up spending (the meetings got moved to virtual). I'm wondering if I still use the same Schedule C approach, or if there are different rules when you received money but didn't actually incur the corresponding expenses? The advice about keeping detailed documentation, using clear business activity descriptions, and properly categorizing expenses on Schedule C has been invaluable. I'm definitely going to create that expense-to-payment matching spreadsheet that was mentioned - it seems like the kind of organization that could save hours of headaches later. One thing I noticed throughout this discussion is how common this mistake seems to be with companies incorrectly issuing 1099-NECs for reimbursements. It makes me wonder if there should be better guidance or training for corporate accounting departments to help them distinguish between actual non-employee compensation and expense reimbursements.

As someone who's dealt with tax compliance issues for small businesses, I want to emphasize how important it is to get this documentation organized properly. The Schedule C approach everyone has outlined is absolutely correct, but I'd add a few practical tips for implementation: First, when you're entering the expenses on Schedule C, make sure each category aligns with IRS expectations. For example, if you had meals during travel, remember that business meals are generally 50% deductible unless they qualify for 100% (like meals provided by the company during business travel). Don't just deduct the full reimbursement amount if it included meals that should be limited. Second, consider creating a simple cover letter that you keep with your tax records (not filed with your return) explaining the situation. Include the company name, dates of travel, business purpose, and a statement that these were expense reimbursements incorrectly reported as 1099-NEC income. This isn't required, but it could save you time if you ever need to explain the situation to a tax professional or during an audit. Finally, going forward, I'd strongly recommend asking Company Z to implement proper accountable plan procedures for any future reimbursements. Share IRS Publication 463 with their accounting department - it clearly explains the difference between accountable plan reimbursements and taxable compensation. Many companies make this mistake simply because they don't understand the rules, not because they're trying to shift tax burden to you. The zero net profit on Schedule C is completely legitimate here and shouldn't raise any red flags as long as your documentation is solid.

Honestly, instead of trying to opt out of Social Security (which is nearly impossible), you might want to focus on maximizing your retirement accounts like 401k, IRA, HSA etc. These give you tax advantages now while letting you control your own investments. The tax benefits can offset some of what you're paying into Social Security.

I understand your frustration with Social Security taxes - I felt the same way when I was starting my career. After researching this extensively, I can confirm what others have said: legitimate opt-outs are extremely limited and strictly regulated. The reality is that Social Security isn't just a retirement program - it also provides disability and survivor benefits that protect you and your family right now. Even if you're skeptical about future solvency, the program has never missed a payment in its 90-year history, and even worst-case projections show reduced benefits, not zero benefits. Rather than focusing on opting out (which likely isn't possible for your situation), consider this approach: maximize your tax-advantaged accounts first. If you're not already maxing out your 401(k), IRA, and HSA (if eligible), you're missing out on immediate tax savings that could be much more significant than your Social Security contributions. These accounts give you the investment control you're looking for while providing real tax benefits today. The 6.2% you pay into Social Security also comes with an employer match of 6.2%, so you're actually getting more value than it appears on your paycheck stub.

You're definitely on the right track with using the 2016 assessment percentages! I went through this exact same process when I converted my townhouse to a rental property last year. The IRS guidance in Publication 527 is pretty straightforward - "at the time you buy it" means exactly that. What really helped me was creating a simple one-page summary that I keep with my tax documents: **Property:** [Address] **Purchase Date:** [Date] **Purchase Price:** $[Amount] **2016 County Assessment:** [X]% land, [Y]% building **Land Value (Non-depreciable):** $[Purchase Price × Land %] **Building Value (Depreciable):** $[Purchase Price × Building %] **Source:** [County Assessor Website/Records from 2016] I also printed out the actual county assessment page from 2016 showing those percentages. My CPA said this type of clear documentation with the specific year and source makes it very easy to defend the calculation if there are ever any questions. The key thing is that you're establishing your cost basis at the time of acquisition, not conversion. Since you bought it in 2016, that's the assessment that matters - not what the percentages shifted to in later years. You've got the right approach!

You're absolutely right to use the 2016 assessment percentages! I just went through this exact situation with a rental conversion and can confirm that Publication 527's guidance about using values "at the time you buy it" is the key. What helped me was thinking of it this way: your cost basis is established at purchase, not at conversion. The 2016 assessment percentages represent the actual land-to-building ratio of what you acquired back then, regardless of how the county's methodology or market conditions changed in subsequent years. I'd recommend creating a simple calculation worksheet showing: - Purchase price: $X - 2016 land percentage: Y% - Land value (non-depreciable): $X × Y% - Building value (depreciable): $X × (100% - Y%) Make sure to save a copy of the 2016 county assessment records. If they're not available online anymore, contact your county assessor's office - they usually maintain historical records even if they're not publicly accessible on their website. The fluctuating percentages you mentioned actually reinforce why the IRS established this rule - it prevents cherry-picking favorable ratios and ensures consistency with your original acquisition. You're being thorough by questioning this upfront, which will save you potential headaches down the road!