Given that you're filing on the extension deadline today, I'd recommend taking a simplified approach for now and addressing the complexities later if needed. Since your K-1 is essentially empty and you mentioned the LLC hasn't generated income or had many expenses, you can likely file your personal return as-is today. The investment interest from your HELOC should be documented and saved for when you properly sort out the LLC's tax situation. Here's what I'd suggest for immediate filing: Keep records of all HELOC interest payments and documentation showing the funds were used to purchase the investment property. You can claim investment interest expense on Schedule A (Form 4952) if you have investment income to offset it against, but as others mentioned, you're limited to your net investment income. For the LLC situation - you're likely looking at filing a late partnership return at this point since the September 15th deadline has passed. The penalties for late partnership filing can be substantial ($210 per partner per month), but if the LLC truly has minimal activity, you might be able to argue reasonable cause. Don't let the LLC complications prevent you from filing your personal return today. You can always amend later once you get the partnership return sorted out properly.

I'm in a very similar situation and just wanted to share what ended up working for me after going through this exact same panic last year! The key thing that saved me was realizing that since the HELOC is in your personal name but was used for the LLC property, you need to treat this as a capital contribution to the LLC. Essentially, you borrowed the money personally and then contributed those funds to the LLC for the land purchase. This means the LLC should show a capital contribution from you (and your sister) on its books, and the interest expense should flow through the LLC return. However, since you're past the partnership filing deadline, here's what I'd recommend for today: 1. File your personal return now without the investment interest deduction to meet the deadline 2. Immediately file the late partnership return (Form 1065) for the LLC showing the interest expense 3. Once you get the corrected K-1, file an amended personal return (Form 1040X) to claim your share of the interest expense The late filing penalty for the LLC will likely be less costly than missing your personal return deadline. Also, if this is the LLC's first year and you can show reasonable cause (like relying on professional advice or the complexity of the situation), you might be able to get the penalty waived. Document everything now - loan statements, property purchase documents, and evidence that the HELOC funds went directly to the property purchase. You'll need this paper trail for the amended returns.

As someone who's been through estate administration, I want to echo what others have said about your sister handling this herself. There's really no legitimate reason she can't deposit or cash an inheritance check made out to her name. Most inheritance checks come from estate attorneys or financial institutions, and these can typically be cashed at the issuing bank even without an account. Yes, there will be fees, but that's much simpler than creating potential tax complications for both of you. The "bank account issues" explanation is concerning. Even if her account is overdrawn or frozen, she could open a new account at a different bank with proper ID and the inheritance documentation. Banks are generally very willing to work with people who have legitimate inheritance funds to deposit. I'd also suggest she contact the estate attorney or executor who issued the check if she's having trouble. They deal with these situations regularly and can provide guidance on the proper way to handle the funds. Don't put yourself at risk trying to solve her banking problems - this needs to be handled through proper channels.

I'm glad you've decided to step back from this situation after reading all the excellent advice here. As a tax professional, I can confirm that everyone who warned you about the potential complications was absolutely right. One additional point I'd like to make: inheritance checks often come with specific documentation (like estate tax ID numbers or probate court information) that banks use to verify their legitimacy. When someone else deposits that check, it can create confusion in the bank's systems and potentially delay or complicate the transaction even further. Your sister really does need to handle this directly. If she's having legitimate banking issues, most banks have customer service departments that can work with her to resolve account problems, especially when she has $25,000 to deposit. If her current bank won't work with her, any other bank would be happy to open a new account for someone with that kind of deposit. You made the smart choice prioritizing your own financial security over trying to solve someone else's banking problems. Sometimes being helpful means encouraging people to handle their affairs through proper channels rather than taking shortcuts that could backfire on everyone involved.

Consider looking into Captive Insurance Companies (CICs) if you own a business or have significant business income. Under Section 831(b), you can elect to have your captive taxed only on investment income, not insurance premiums, for captives with less than $2.3M in annual premiums. This allows you to deduct legitimate business insurance premiums paid to your own captive, while the captive accumulates wealth in a tax-advantaged structure. Another often-overlooked strategy is investing in Qualified Opportunity Zone funds, which allow you to defer capital gains taxes by investing those gains into designated economically distressed communities. You get a 10% step-up in basis after 5 years, 15% after 7 years, and if held for 10+ years, any appreciation in the QOZ investment itself is tax-free. For immediate tax relief, look into Cost Segregation studies if you own any commercial real estate or rental properties. This allows you to accelerate depreciation on certain components of buildings (like flooring, lighting, landscaping) from 27.5-39 years down to 5-15 years, creating significant upfront deductions. Finally, consider establishing a Charitable Remainder Trust (CRT) if you have highly appreciated assets. You get an immediate charitable deduction, avoid capital gains tax on the sale of the appreciated assets within the trust, and can receive income payments for life while ultimately benefiting charity.

One strategy that hasn't been mentioned yet is establishing a Solo 401(k) with a profit-sharing component if you have any 1099 income. Even small amounts of consulting or freelance work can open up significant additional retirement contribution space beyond your regular employer 401(k). Also consider tax-efficient withdrawal strategies from existing accounts. At your income level, you might benefit from Roth conversions during lower-income years (if you plan any sabbaticals, career transitions, or early retirement). Converting traditional IRA funds to Roth during a year when your income dips can be incredibly valuable long-term. Don't overlook state tax planning either - depending on where you live, strategies like establishing residency in a no-tax state before retirement or timing certain income recognition around state tax rules can save substantial amounts. Finally, if you're charitably inclined, consider a Donor Advised Fund (DAF). You can make a large contribution in a high-income year to get the deduction, then distribute the funds to charities over multiple years. It's more flexible than direct charitable giving and can help with the "bunching" strategy others mentioned. The key is working with a fee-only financial advisor who specializes in tax planning, not just someone who does basic tax prep. The strategies get much more sophisticated at your income level.

I just want to warn everyone not to skip reporting crypto, even if you think the IRS won't know. I did that in 2021 because I had a small loss and didn't get any tax forms, and I got a CP2000 notice last year saying I owed taxes plus penalties. Apparently my exchange DID report my transactions to the IRS using some form I never received. Had to pay about $800 more than I would have if I'd just reported correctly in the first place. Don't make my mistake!

Just to reinforce what others have said - yes, you absolutely need to file Form 8949 even without a 1099-B. I'm a tax preparer and see this situation constantly with crypto clients. The key thing to understand is that cryptocurrency transactions are treated as property sales by the IRS, so every sale triggers a taxable event regardless of whether you received tax documents. Your $3,200 loss is actually valuable - it can offset other capital gains or up to $3,000 of ordinary income. For H&R Block, when it asks about the 1099-B, select "transactions not reported on Form 1099-B" and check box C on Form 8949. You'll need to manually enter each transaction with purchase date, sale date, proceeds, and cost basis. Keep detailed records of all your transactions - the IRS is increasingly focused on crypto compliance and many exchanges do report to them even if they don't send you forms. Don't risk an audit by not reporting. The penalties for underreporting are much worse than the time it takes to fill out the form properly.

Quick heads up from someone who works in this area - the IRS has been cracking down HARD on one-person religious organizations in the last few years. Too many tax scams using "churches" as fronts. They have a special audit flag for orgs where the founder is the only member and receiving compensation. This doesn't mean you can't do it legitimately! But you need to be EXTRA careful about documentation. I recommend recruiting at least 2-3 other people as board members (even if they're not "members" of your religion) and make sure you follow EVERY formality - regular documented meetings, clear bylaws, impeccable financial records.

As someone who went through this process recently, I'd strongly recommend consulting with a nonprofit attorney before accepting any donations, even small ones. The complexity around religious organizations is real, and the stakes are high if you get it wrong. One thing that helped me was creating a timeline: first establish the legal entity through your state, then get your EIN, then file for 501(c)(3) status. Only after that approval should you actively solicit donations. In the meantime, you can absolutely talk about your mission and build interest without taking money. Also consider starting with a fiscal sponsorship arrangement through an established religious organization while you get your paperwork sorted. This lets you accept tax-deductible donations legally while maintaining your independence. Many denominational bodies offer this service even for non-affiliated religious groups. The IRS publication 1828 "Tax Guide for Churches and Religious Organizations" is incredibly helpful - it's free and covers most of these scenarios in detail.