Can I deduct construction loan interest on my taxes - business partnership for spec home

But wouldn't they also need to file quarterly estimated taxes if they're filing as a sole proprietor? And what about self-employment taxes? Is there any way they could just deduct it on Schedule A to keep things simple?

You're absolutely right that filing as a sole proprietor would potentially trigger estimated tax payment requirements, especially if they expect to owe more than $1,000 in taxes from this activity. Self-employment taxes would also apply to any profits from the venture. As for deducting on Schedule A instead, that's generally not the correct approach for business interest. Schedule A is for personal itemized deductions, and the Tax Cuts and Jobs Act limited mortgage interest deductions to primary and secondary homes that you live in, not investment or spec properties built for resale. The IRS would view this as a business activity regardless of whether there's a formal entity.

Did it actually work well with partnership stuff? I'm in a similar situation with my brother on a house flip but we don't have a written agreement, just a verbal one. Would it still help in my case?

I'm skeptical about these online services. How does it know the specific tax laws for your state? Construction and real estate tax rules vary a lot between states.

It actually worked really well for partnership questions. The system prompted me to answer some specific questions about my arrangement that I hadn't even considered, which helped define the partnership for tax purposes. Even if you just have a verbal agreement, it helps you document the terms for tax purposes. Regarding state-specific rules, you select your state during the setup process, and it tailors the advice accordingly. I was surprised by how detailed it got with the construction loan interest - it even separated out points paid vs regular interest and showed the different tax treatment for each. It's definitely more comprehensive than the generic advice I was finding online.

How does this even work? Doesn't the IRS just hang up when their lines are full? I've literally tried calling 20+ times and can never get through.

This sounds like a scam. I seriously doubt any service can magically get through to the IRS when millions of people can't. They probably just take your money and then you still wait forever.

The system basically keeps calling and navigating the phone tree until it finds an open line. When you call directly, you might get a "too busy" message and get disconnected, but their system tries different times and approaches until it gets through. They explained that they've mapped out the optimal calling patterns based on wait time data. Regarding the skepticism, I felt the same way initially. I was prepared to dispute the charge if it didn't work, but I was desperate after trying for weeks. I was genuinely surprised when my phone rang and an actual IRS agent was on the line. The agent had no idea I'd used a service - from their perspective, I'd just called in normally. It saved me hours of frustration and helped me resolve my partnership tax questions.

Thank you for flagging this! I had no idea about the potential penalties. Do you know if there's any way to fix this retroactively? We've been operating this way for about 6 months.

Yes, you can definitely address this retroactively. You can file a partnership agreement now that specifies it's documenting your existing arrangement (include the original start date). Then file Form 1065 for the tax year - if you're within the deadline, there won't be penalties. If you've missed deadlines, you can request penalty abatement for first-time violations using a reasonable cause explanation. The IRS is often lenient with first-time procedural mistakes if you're proactive about fixing them. Just make sure the partnership agreement clearly outlines capital contributions, profit/loss allocations, and decision-making authority to prevent future disputes.

This is so important! My accountant explained that construction period interest generally has to be capitalized as part of the property's basis rather than deducted currently if you're building property to sell. Basically, it becomes part of your cost basis and reduces your profit when you sell, rather than giving you a deduction now.

This is exactly the comprehensive breakdown I needed! I had no idea about the capitalization requirement for construction interest - I was definitely heading down the wrong path trying to deduct it immediately. The partnership angle makes total sense now too, even though we never formalized anything. Quick follow-up question: when you mention getting a written partnership agreement that "documents your arrangement from the beginning," does that mean we can backdate it to when we actually started the project 6 months ago? And should we include specific percentages for capital contributions and profit sharing, or is it okay to keep it general since we're planning to split everything 50/50? Also, really appreciate everyone mentioning the tools like taxr.ai and Claimyr - I think I'm going to need both professional guidance AND a way to actually reach the IRS to clarify some of these details before filing.

Yes, you can absolutely backdate the partnership agreement to reflect when your business arrangement actually began - that's totally legitimate since you're documenting an existing relationship, not creating a new one. Just make sure the agreement clearly states the effective date as when you first started working together on this project. For the percentages, definitely be specific about both capital contributions AND profit/loss sharing, even if it's 50/50. Include details like who contributed what amounts, when, and how future contributions will be handled. This protects both of you if disputes arise later and satisfies IRS documentation requirements. One thing to add to your agreement: specify how decisions get made, who handles day-to-day management, and what happens if one partner wants out before the property sells. These details become crucial if things don't go as planned. The tools others mentioned should definitely help, but given the complexity here (partnership formation, construction interest capitalization, potential penalties), I'd still recommend getting at least a consultation with a CPA who specializes in real estate partnerships. The cost upfront could save you thousands in penalties or missed deductions.

Yes, you can absolutely document your partnership agreement with the original start date from 6 months ago - this isn't "backdating" in a fraudulent sense, it's simply memorializing an existing arrangement that was already operating. Just make sure the agreement clearly states it's documenting your existing partnership that began on [original date]. Definitely include specific percentages! Even though you're doing 50/50, spell out exactly what that means: 50% capital contributions, 50% profit/loss allocation, 50% voting rights, etc. Also document who contributed what initially (cash, labor, expertise) and how you'll handle future capital calls if the project needs more funding. One thing I'd add - make sure your partnership agreement addresses what happens if one partner wants to exit before the house sells, or if you disagree on major decisions like listing price or timing. These situations come up more often than people expect, and having clear terms prevents major headaches later. The combination of proper documentation plus using those tools to get professional guidance should set you up well. Just don't wait too long to get this sorted out - the longer you operate without proper structure, the more complex it becomes to unwind any mistakes.

Yes, you can absolutely create a partnership agreement that documents your existing arrangement from 6 months ago - just make sure the effective date reflects when you actually started the venture. This isn't "backdating" in a fraudulent sense, it's properly documenting what was already happening. Definitely include specific percentages for everything - capital contributions, profit/loss allocations, and management responsibilities. Even though you're doing 50/50, being explicit prevents future disputes and satisfies IRS requirements. Include details like who contributed what amounts and when, how you'll handle additional capital calls if needed, and what happens if one partner wants out. One thing to add to the great advice about taxr.ai and Claimyr - make sure you get that partnership agreement drafted before you file anything. The IRS looks much more favorably on partnerships that have clear documentation from the start (even if created retroactively) versus those that scramble to create agreements only when questioned during an audit.

Yes, you can absolutely document your existing arrangement with an effective date from when you actually started - that's completely legitimate and not backdating in a problematic way. You're simply putting in writing what was already happening. Be specific about the 50/50 split for both capital contributions and profit/loss sharing - vague language could cause issues later if there's a dispute or IRS questions. For the partnership agreement, include: initial capital contributions from each partner, how additional contributions will be handled, profit/loss allocation percentages, decision-making authority, and what happens if someone wants out. Even though you trust each other, clear terms prevent misunderstandings down the road. Regarding the construction interest capitalization - make sure to track when construction actually began versus when you took out the loan. Interest on loan proceeds sitting unused before construction starts might be treated differently than interest during active construction. Your tax pro will help you sort through the timing nuances. One more tip: keep detailed records of all expenses, progress photos, and contractor invoices. The IRS likes to see clear business activity documentation for spec home projects to distinguish them from personal residence construction.