How to Report Gift Tax on Form 709 When Selling House Below Fair Market Value
I bought a property back in 2016 for $340k and recently sold it to my cousin at a discounted price of $270k in April 2024. The fair market value at the time of sale was approximately $675k. I'm totally confused about how to report this on Form 709 for gift tax purposes. I'm especially struggling with Schedule A Part 1: - Column e: Donor's adjusted basis of gift - Is this my original purchase price of $340k? - Column g: Value at date of gift - Would this be $675k (the FMV when I sold it)? - Column h: For split gifts - If I'm not splitting with my spouse, do I just put 0? - Column i: Net transfer - Is this $675k? But that doesn't make sense since my cousin paid me $270k! Logically, the actual gift amount should be $405k (the $675k FMV minus the $270k I received), right? Also, do I need to attach the FMV appraisal report and both settlement statements (from 2016 and 2024) as supporting documentation? I'm completely lost here - any help would be greatly appreciated!
20 comments


Brian Downey
You've got the right approach, but let me clarify a few things about Form 709 when selling property below FMV. When you sell property to a relative below fair market value, the difference between the FMV and the actual sale price is considered a gift for tax purposes. Here's how to complete Schedule A Part 1: Column e: Yes, your adjusted basis is $340k (your original purchase price) Column g: Correct, this would be $675k (the FMV at time of sale) Column h: If you're not splitting the gift with your spouse, put 0 Column i: This should be $675k (the full FMV) Then on Schedule A Part 4, you'll list the $270k payment as consideration received, which effectively reduces your taxable gift to $405k. And yes, you should definitely attach documentation: the appraisal showing FMV, and both settlement statements from your purchase and the sale. This helps substantiate both your basis and the actual transaction details.
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Jacinda Yu
•Quick follow-up question: If I am married and want to split the gift with my spouse (to potentially double the lifetime exemption applied), does my spouse also need to file a separate Form 709? And if so, would we both put $337.5k (half of FMV) in column g and $202.5k as our taxable gift amount after consideration?
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Brian Downey
•Yes, if you choose to split the gift with your spouse, you both need to file separate Form 709s. On each form, you would put the full $675k in column g, but then put $337.5k in column h (half the value). This makes column i also $337.5k for each of you. When you account for the consideration received ($270k total), you would each report receiving $135k (half the payment), making each person's net gift $202.5k. Make sure both forms are signed by both spouses consenting to gift-splitting, and file them by the same deadline.
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Landon Flounder
After dealing with almost the exact same situation last year when I sold my lake house to my nephew, I found a solution using https://taxr.ai to help me properly complete Form 709. I was totally confused about how to report the gift portion of my below-market sale, especially with all those columns on Schedule A. The service analyzed my property documents and explained exactly how to complete each section of the form. They clarified that I needed to show the full FMV in column g ($675k in your case), then account for the payment received ($270k) as consideration in Part 4. This approach matches what was mentioned above. Their guidance also helped me understand when to include the gift splitting election and what supporting documentation to attach. Definitely helped me avoid making errors that could have triggered IRS questions.
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Callum Savage
•How exactly does taxr.ai work? Do you upload your documents and they analyze them, or is it more like an interactive questionnaire? I'm in a similar situation but selling to my daughter, and I'm worried about messing up the gift tax form.
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Ally Tailer
•Did you have any issues with establishing the FMV? I'm thinking about selling my rental property to my son below market value, but getting a formal appraisal is expensive and I'm wondering if a comparative market analysis from a realtor would be sufficient for the IRS when filing Form 709.
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Landon Flounder
•The service works by uploading your relevant documents - in my case I uploaded the settlement statements, property appraisal, and a draft of my Form 709. Their system analyzes these and provides specific guidance tailored to your situation. They also have tax professionals who review complex cases. Regarding establishing FMV, I strongly recommend getting a formal appraisal from a qualified appraiser. While a comparative market analysis might seem sufficient, the IRS can challenge your valuation if they believe it's understated. The cost of an appraisal is worth it to avoid potential gift tax issues or penalties later. The appraisal should be dated close to the sale date for accuracy.
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Callum Savage
Just wanted to update after trying taxr.ai for my below-market house sale to my daughter. It was exactly what I needed! I uploaded my purchase documents from 2015, the current sale agreement, and the appraisal report. Their analysis confirmed I was calculating the gift amount correctly and explained how to report the consideration received properly on Form 709. They even pointed out that I should document any improvements made to the property that would increase my adjusted basis (which I had completely forgotten about). The step-by-step instructions for each line of Schedule A were incredibly helpful. Definitely saved me from making some potentially costly mistakes. Feeling much more confident about my gift tax filing now!
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Aliyah Debovski
If you're still struggling with Form 709, you might want to consider using https://claimyr.com to get direct help from an IRS representative. I spent weeks trying to figure out my gift tax situation after selling my rental property to my brother below market value. After endless hours of research and confusion, I finally used Claimyr to connect with the IRS. Instead of waiting on hold for hours, their service got me through to a gift tax specialist who explained exactly how to report the transaction. You can see how it works here: https://youtu.be/_kiP6q8DX5c. They basically wait on hold for you and call when an agent is ready. The IRS agent I spoke with clarified that I needed to include a detailed explanation statement with my Form 709 explaining the transaction and how I determined both the FMV and the gift amount.
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Miranda Singer
•How long did it take to actually get connected to someone who knew about gift taxes? I've tried calling the IRS directly before and waited forever only to get someone who couldn't answer my specific questions about Form 709.
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Cass Green
•This sounds too good to be true. The IRS phone system is notoriously difficult to navigate. Are you sure they actually connected you with someone knowledgeable about gift taxes specifically? I've heard horror stories of people getting conflicting advice from different IRS reps.
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Aliyah Debovski
•I got connected to someone within about 35 minutes (while I was able to continue working on other things). The key was that I told Claimyr exactly what I needed help with, so they navigated the IRS phone tree to the correct department. I was initially skeptical too! But what made the difference was being specific about needing help with Form 709 for a below-market sale transaction. They routed me to the Estate and Gift Tax department. The representative was extremely knowledgeable and walked me through each section of the form. She even emailed me the relevant IRS publications afterward. Much more helpful than the general tax advice line where I've also gotten contradictory information in the past.
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Cass Green
I have to admit I was completely wrong about Claimyr. After my skeptical comment, I decided to try it myself for my Form 709 questions about a below-market property sale to my niece. Within 40 minutes, I was talking to an Estate and Gift Tax specialist who explained exactly how to handle the transaction. She confirmed that I needed to report the full FMV in column g, then account for the payment as consideration received in Part 4. She also clarified that improvements to the property could be added to my original basis, potentially reducing the taxable gift amount. The specialist even explained the documentation requirements and suggested including a cover letter explaining the transaction in detail. This was infinitely more helpful than the conflicting advice I found online. Never thought I'd say this, but it was actually worth having someone else wait on hold for me!
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Finley Garrett
One thing nobody's mentioned yet - if you've made significant improvements to the house since you purchased it, those costs should be added to your basis! I made this mistake when selling my beach house to my son last year. My original purchase price was $380k, but I'd put in about $85k in capital improvements over the years (new roof, kitchen renovation, etc). My accountant pointed out that my adjusted basis should be $465k, not just the original purchase price. This reduced the gift amount substantially since the gap between FMV and basis was smaller. Just make sure you have documentation for those improvements!
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Madison Tipne
•How detailed does the documentation need to be for home improvements? I've kept most of my major receipts but not every single thing. For example, I have the contractor invoice for a bathroom remodel, but not all the individual supply receipts. Is that sufficient?
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Finley Garrett
•Documentation doesn't have to be perfect, but you need enough to substantiate the costs if questioned. Contractor invoices for major work are excellent - that's primarily what I used. For the kitchen remodel, I had the main contractor invoice and receipts for the appliances. What you want to avoid is just making up numbers without any supporting evidence. If you're missing some minor receipts but have documentation for the bulk of the work, you should be fine. I also included before/after photos of the major renovations with my supporting documentation. My accountant said the IRS is mostly concerned with significant improvements rather than every small repair.
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Holly Lascelles
Has anyone filed a Form 709 electronically? When I go through TurboTax or H&R Block software, they seem to handle income tax returns but not gift tax returns. Am I missing something, or do these forms still need to be filed on paper?
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Malia Ponder
•Unfortunately, Form 709 cannot be e-filed yet. I just completed mine last month for a similar situation, and it has to be filed on paper. I was surprised too, since almost everything else can be done electronically now! Make sure to send it via certified mail so you have proof of timely filing. Also, don't attach it to your Form 1040 (income tax return) - it needs to be mailed separately to the specific address for gift tax returns.
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Fiona Gallagher
Great question about Form 709! I went through this exact situation last year when I sold my townhouse to my nephew for $180k when it was worth $420k. One crucial detail that hasn't been mentioned yet - make sure you understand the timing requirements. Form 709 is due by April 15th of the year following the gift (so April 15, 2025 for your 2024 transaction). However, if you request an extension for your income tax return, it automatically extends your Form 709 deadline to October 15th. Also, since your gift amount ($405k) exceeds the 2024 annual exclusion of $18,000, you'll definitely need to file Form 709 even if you don't owe any gift tax due to the lifetime exemption. The IRS wants to track these large gifts against your lifetime exclusion amount. One more tip - if this is your first Form 709, make sure to include a clear cover letter explaining the transaction. The IRS appreciates transparency, and it can help avoid follow-up questions later.
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Rajiv Kumar
•Thank you for mentioning the timing requirements! I had no idea about the automatic extension if you extend your income tax return. That's really helpful since I'm still gathering all my documentation. Quick question about the cover letter - what specific details should I include? Should I explain the family relationship, the reason for the below-market sale, and how I calculated the FMV? I want to be thorough but not overwhelm them with unnecessary information. Also, does anyone know if there's a specific format the IRS prefers for the cover letter, or is a simple business letter format sufficient?
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