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One thing nobody's mentioned yet - don't forget about the self-employment tax implications. When you're deciding whether to take the full deduction for your business expenses or not, remember that reducing your net income also reduces your self-employment tax (which is currently 15.3% for 2025). So if you don't deduct your business expenses, you'd pay more in SE tax, which might offset some of the benefit of the higher 401k contribution. It's usually better tax-wise to take all legitimate business deductions and then calculate your Solo 401k contribution based on the lower net amount.
Thanks for bringing this up! I hadn't even thought about the self-employment tax angle. So if I deduct the $1,300 in expenses, I'd save on SE tax even though my potential 401k contribution would be lower. Do you know roughly how that math works out? Is the SE tax savings significant enough to make the lower contribution limit worthwhile?
The math typically favors taking all legitimate business deductions. On $1,300 of expenses, you'd save about $199 in self-employment tax (15.3% of $1,300) by deducting them. If you didn't deduct those expenses, you could contribute an extra $1,300 to your Solo 401k, which would save you income tax on that amount - but you'd still pay the extra $199 in SE tax. Unless you're in a very high income tax bracket, the SE tax savings plus income tax savings on the $1,300 business deduction will usually exceed the income tax savings on the additional $1,300 401k contribution.
Don't overthink this! Just use the IRS formula: your contribution limit is lesser of $22,500 or your net earnings. And you ALWAYS wanna deduct business expenses. I made the mistake of not tracking my expenses properly when I started my side hustle and probably overpaid hundreds in taxes. Oh and btw the plan needs to be established by Dec 31st of the tax year, but you can actually make the contributions up until your tax filing deadline (including extensions). Super helpful if you're tight on cash at year end!
But what about the employer contribution part? Doesn't that add more to the total you can put in? I thought solo 401ks let you contribute as both employer and employee.
You're absolutely right about the employer contribution! Solo 401k plans do allow both employee and employer contributions. The $22,500 limit Oliver mentioned is just for the employee elective deferral portion. As the employer, you can also contribute up to 25% of your net self-employment earnings (after deducting half of your self-employment tax). For someone with $8,000 in net earnings like Melina, this would add roughly another $1,600 in potential contributions using the simplified 20% calculation. So the total possible contribution would be closer to $8,000 (employee) + $1,600 (employer) = $9,600, but since you can't contribute more than 100% of your net earnings, you'd be capped at the $8,000 total in this case. Still good to understand both parts though!
Make sure you're keeping track of the adjusted basis for any replacement shares! The wash sale rule disallows the loss, but that loss doesn't disappear forever - it gets added to the basis of your replacement shares. This matters for when you eventually sell those replacement shares.
This is such an important point that's often missed! I once had a situation where I had wash sales across tax years, and I had to make sure I tracked the adjusted basis into the next year. Does being a non-resident change anything about how this carry-over basis works?
You're right to ask about the cross-year implications for non-residents! The basis adjustment works the same way regardless of residency status, but there's an extra wrinkle for non-residents. If you have wash sales that create adjusted basis in replacement shares, you need to carefully track that adjusted basis even if your residency status changes in the future. The IRS systems don't always effectively track basis information across different taxpayer statuses, so keeping your own detailed records is essential. This is especially true if you might change from non-resident to resident status (or vice versa) in a future year.
I'm dealing with a similar wash sale situation as a non-resident, and this thread has been incredibly helpful! One thing I wanted to add based on my experience is that you should double-check your 1099-B carefully because some brokerages don't always correctly identify ALL wash sales, especially if you have accounts at multiple brokerages. I discovered that I had wash sales that weren't marked on my 1099-B because I sold shares at one brokerage and bought similar shares at another brokerage within the 30-day window. The wash sale rule still applies in this situation, but the brokerages don't communicate with each other to identify these cross-brokerage wash sales. So even if your 1099-B shows some wash sales, make sure to review all your transactions across all accounts to catch any that might have been missed. You'll still need to report these on Form 8949 with code "W" even if they weren't identified by your brokerage.
This is such a crucial point that many people miss! I had no idea that wash sales could occur across different brokerages. That's really scary because you could unknowingly violate the wash sale rules and then file incorrectly. How did you even figure out that you had cross-brokerage wash sales? Do you just have to manually compare all your buy and sell transactions across every account you have? That sounds like it could be a nightmare if you're an active trader with multiple accounts.
I'm confused why everyone's saying 7 years. My accountant put our portable toilets under 5-year property when we bought them for our construction company last year. Did we do something wrong???
Your accountant might have classified them as 5-year property if they're being used primarily in construction activities. Assets used in construction can sometimes qualify for 5-year treatment under asset class 15.0 for "Construction." It depends on your specific business use. If you're primarily renting them to others, they're typically 7-year property. But if they're used as part of your construction business operations, 5-year might be correct. I'd double-check with your accountant about their reasoning, but it could be completely legitimate based on your specific situation.
Great question! I went through this exact same situation when I started my outdoor event business. After consulting with my CPA and doing some research, I can confirm that porta potties are indeed 7-year property under MACRS asset class 00.28. A few key points that helped me: - They're considered tangible personal property, not real property, since they're mobile - You can absolutely use Section 179 expensing if you want to deduct the full cost in year one (subject to income limitations) - If you purchase them late in the year, you might also qualify for bonus depreciation One tip: make sure to keep good records of the business use percentage if you ever use them for personal events. The IRS likes to see clear documentation that they're primarily for business purposes. Also, don't forget to factor in any delivery/setup costs - those can usually be added to the basis of the equipment rather than expensed separately.
This is really helpful - thank you for the comprehensive breakdown! I'm curious about the delivery/setup costs you mentioned. When you say they can be added to the basis, does that include things like installation fees for electrical hookups or plumbing connections at event sites? Or are you referring more to the initial delivery when you first purchase the units? I want to make sure I'm capitalizing the right expenses versus treating them as ongoing operational costs.
Great question about the delivery/setup costs! You want to distinguish between costs that are part of getting the asset "ready for use" versus ongoing operational expenses. For the initial purchase, delivery and any setup costs to get the units operational (like initial electrical connections, testing, etc.) should be capitalized and added to the basis of the equipment. These are considered part of the cost to acquire and prepare the asset for business use. However, the ongoing delivery/pickup costs for each event rental would typically be treated as operational expenses since those are recurring costs associated with using the equipment in your business operations, not preparing it for initial use. The key test is: "Is this cost necessary to get the asset ready for its intended business use?" If yes, capitalize it. If it's a cost you'll incur repeatedly during normal operations, expense it.
Probably unpopular opinion but... just take the money and pay the taxes? All these complicated schemes to save on taxes often end up costing more in professional fees and stress than they save. Plus some can put you in audit territory. My brother won about $200k and just paid the taxes. Simple. No stress. No worrying about IRS problems. And honestly, you still have hundreds of thousands left after taxes. Not worth the headache trying to squeeze out every last dollar imo.
Congratulations on your win! As someone who works in tax preparation, I'd strongly recommend getting professional help given the size of this windfall. One important consideration nobody's mentioned yet - timing your claim strategically. If you're close to year-end, you might want to think about whether to claim in 2025 vs early 2026, depending on your other income and potential tax law changes. Also, make sure you understand California's specific lottery tax rules. CA doesn't tax lottery winnings at the state level the same way as regular income - there are some nuances that could affect your planning. The charitable contribution strategy mentioned earlier is solid, but remember the 60% AGI limitation means you can't offset the entire win in one year through donations alone. You might need to spread charitable giving across multiple years to maximize the tax benefit. Whatever you decide, don't rush into anything. The lottery commission usually gives you several months to claim, so use that time to get proper advice and make informed decisions. This is definitely a situation where spending a few thousand on quality professional guidance could save you tens of thousands in taxes.
This is incredibly helpful advice, thank you! I had no idea about the timing strategy for claiming - that's something I definitely need to research more. Could you clarify what you mean about California's lottery tax rules being different? I thought all income was taxed the same way at the state level. Also, do you know if there are any specific documentation requirements I should be aware of when working with a tax professional on lottery winnings? I want to make sure I have everything organized properly from the start.
Lauren Johnson
I'm surprised nobody has suggested the simplest solution - ask the company for their cap table or a current investor statement. Most legitimate startups provide quarterly or annual updates to investors showing your current ownership percentage and sometimes an estimated value. The Schedule K-1 is just showing your portion of taxable income/loss for the year, which is almost always going to show losses in early-stage companies due to high growth expenses, R&D costs, and acquisition-related charges. That's actually tax-efficient for investors since you can often use those passive losses against other passive income.
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Jade Santiago
ā¢This is the way. My startup sends quarterly investor updates with our current paper value. They also explain major events that affected K-1 allocations each year. If your company isn't doing this, it's a red flag about their communication practices.
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Cassandra Moon
This is a really common source of confusion for startup investors! The key thing to understand is that your Schedule K-1 losses are actually separate from your investment's market value. Think of it this way - the K-1 shows your share of the company's accounting losses (which are often intentional for tax purposes), while your investment value depends on what someone would pay for your shares today. Those acquisition costs you mentioned are likely being depreciated and amortized over several years, creating paper losses that flow through to your K-1. Meanwhile, the acquisitions themselves might be adding real value to the company by expanding market share, eliminating competition, or adding valuable assets. Before making any decisions, I'd recommend getting a current 409A valuation from the company if available, and also understanding your liquidation preference position. The "double your money" estimate could be accurate for the overall company value, but your specific payout might depend on factors like what share class you hold and whether there's debt that gets paid first. The K-1 losses can actually be beneficial for your taxes if you have other passive income to offset. Just make sure you're tracking your adjusted basis correctly so you know your true cost basis when you eventually sell.
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Mateo Rodriguez
ā¢This is such a helpful breakdown! I'm actually dealing with something similar and was panicking when I saw losses on my K-1 for the third year running. Your explanation about depreciation and amortization from acquisitions makes total sense - I hadn't thought about how those accounting treatments would flow through to investors. One quick question - when you mention tracking adjusted basis, what specific records should I be keeping? I have my original investment documents but I'm not sure what else I need to properly calculate this when the time comes to sell.
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