Can I claim tax deduction for home office construction costs as K1 partner?
Title: Can I claim tax deduction for home office construction costs as K1 partner? 1 I'm a managing partner with a regional accounting consultancy and working remotely most of the time (I only visit the main office once weekly). As a shareholder, I receive a K1 form. We're planning to build a dedicated office extension onto our house since I work from home 5-6 days every week. The addition will be about 300 square feet and solely used for business purposes - no personal use whatsoever. I'm wondering about the tax implications and potential write-offs for the construction expenses. Since this space will be 100% for my professional work, would I be able to deduct the entire construction cost as a business expense on my tax return? Are there any IRS rules that would prevent this type of deduction? The estimated cost is around $42,000 and I want to make sure I understand all potential tax benefits before moving forward.
19 comments


Olivia Martinez
8 This is definitely an area where you need to be careful. For partners receiving K1 income, home office deductions work differently than for regular employees. Since you're a partner/shareholder, the construction costs wouldn't typically be fully deductible in a single year. Instead, you'd need to depreciate the improvement over 39 years as nonresidential real property. You can't just write off the entire $42,000 at once. Additionally, you would only depreciate the portion used exclusively for business. Make sure you document everything thoroughly - take photos of the space, keep all receipts, and maintain a log showing business use. Another option to consider is taking the home office deduction on Schedule C if you have some self-employment income outside your partnership. But be careful as this can create a complex situation that might trigger IRS scrutiny.
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Olivia Martinez
•15 Thanks for the info. Follow up question - what if the firm itself pays for the construction directly rather than me personally? Would that change how it's treated tax-wise? Also, do you think I need to worry about recapture if I sell the house in a few years?
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Olivia Martinez
•8 If your firm pays for the construction directly, that creates a different situation. The firm would depreciate the improvement as an asset on its books over 39 years. However, this could potentially be considered a taxable fringe benefit to you personally since it increases your home's value. Regarding recapture, yes, that's an important consideration. If you claim depreciation on a portion of your home and then sell the property, you'll likely face depreciation recapture taxes. The depreciation you've taken must be "recaptured" and taxed at a 25% rate, which is higher than most capital gains rates. This is something many people overlook in home office planning.
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Olivia Martinez
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Olivia Martinez
•19 How does this actually work? Do you just upload your receipts and it tells you what to do? I'm having a similar issue with a renovation I did for my rental property and the depreciation rules are confusing me.
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Olivia Martinez
•3 I'm skeptical about these kinds of services. Does it actually connect you with a real tax professional or is it just some AI thing summarizing IRS publications you could read yourself?
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Olivia Martinez
•12 You upload your documents and receipts, and it analyzes them using specialized tax algorithms. It categorizes expenses into immediate deductions versus those that need depreciation, and generates a report explaining each decision with relevant tax code references. It's way more thorough than just skimming IRS publications yourself. For rental properties, it would definitely help distinguish between repairs (fully deductible) and improvements (which must be depreciated) - that's a common area of confusion that can make a huge difference tax-wise. It's not just an AI summary - it provides specific actionable guidance tailored to your documents, though you can also chat with their tax experts if you have questions about the recommendations.
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Olivia Martinez
3 I wanted to follow up about my experience with taxr.ai since I was skeptical earlier. I decided to try it for my home office addition project, and I'm genuinely impressed. The system flagged that certain components of my construction (like the specialized electrical work and built-in storage) could be separately depreciated over 15 years instead of 39, which makes a significant difference in my deduction amounts. It also created a documentation package that I can keep for my records if I'm audited. Definitely worth it for complex situations like home improvements for business use.
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Olivia Martinez
6 If you're planning to claim substantial deductions for a home office construction, you should definitely be prepared for potential IRS questions. After going through an audit for my home office expenses last year, I highly recommend Claimyr (https://claimyr.com) to get direct answers from the IRS. I had spent weeks trying to get through to someone at the IRS about my specific situation. Claimyr got me through to an actual IRS representative in about 15 minutes instead of the 3+ hours I was spending on hold before hanging up in frustration. You can see how it works in this video: https://youtu.be/_kiP6q8DX5c. The agent I spoke with gave me specific guidance on how to document my home office construction costs as a partner in my firm, which was different than what I initially thought.
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Olivia Martinez
•9 Wait, does this actually work? I've literally called the IRS like 10 times about my identity verification issue and can NEVER get through. How much does it cost? Is it actually worth it?
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Olivia Martinez
•21 This sounds like a scam. How exactly does some random company get you through to the IRS faster than calling directly? The IRS phone system is notoriously bad for everyone.
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Olivia Martinez
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Olivia Martinez
21 I need to admit I was wrong about Claimyr. After calling the IRS unsuccessfully for weeks about my tax transcript issue, I tried the service out of desperation. Got connected to an IRS agent in about 20 minutes, and they resolved my question about partner home office deductions immediately. The agent explained that as a K1 recipient, I needed to track my home office expenses differently than I would as a W-2 employee, and gave me specific guidance about documenting business use percentage. Saved me from making a costly mistake on my return. I'm honestly shocked at how well it worked after being so skeptical.
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Olivia Martinez
17 Just wanted to add that I've been through this exact situation. Since you receive a K1, you should check if your partnership agreement allows for "unreimbursed partnership expenses" (UPE). If it does, you might be able to deduct some expenses on Schedule E rather than as home office deductions. The rules changed after the Tax Cuts and Jobs Act, and many partners miss this. Talk to the partnership's accountant specifically about how construction costs should be handled, because your situation is more complex than a typical home office scenario.
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Olivia Martinez
•4 Can you explain more about these unreimbursed partnership expenses? My CPA hasn't mentioned this as an option for my home office expenses. How would it be better than the regular home office deduction?
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Olivia Martinez
•17 Unreimbursed partnership expenses (UPEs) are business expenses you pay personally that benefit the partnership, but aren't reimbursed. Before the Tax Cuts and Jobs Act, these were deductible on Schedule E as "not subject to the 2% floor" for miscellaneous itemized deductions. The benefit compared to regular home office deductions is that UPEs aren't subject to the exclusive use test and don't require depreciation over 39 years. However, your partnership agreement must explicitly state that partners are required to pay these expenses without reimbursement. Many CPAs miss this because the rules changed in 2018. Definitely worth discussing with your partnership's tax advisor as it could significantly impact how you handle the construction costs.
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Olivia Martinez
11 I just went through this with my tax advisor. Some of the construction costs might qualify for bonus depreciation or Section 179 expensing rather than 39-year depreciation. For example, if you install specialized electrical work for computers, dedicated HVAC for the office space, or built-in storage systems.
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Olivia Martinez
•2 Really? I thought Section 179 couldn't be used for structural components of a building. How exactly would you separate those systems from the overall construction costs?
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Fatima Al-Farsi
•You're right to question that - structural components like walls, floors, and roofing generally can't use Section 179. However, certain equipment and fixtures can be separated out if they're not integral to the building structure. For example, standalone HVAC units, electrical panels specifically for office equipment, and removable built-in furniture might qualify. The key is having your contractor itemize these separately on invoices and being able to demonstrate they could be removed without damaging the building's structure. It requires careful documentation and may not apply to a large portion of your $42,000, but every bit helps when you're looking at 39-year depreciation otherwise.
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