What's my new cost basis for a house after buying out ex-wife's half in divorce?
Going through a divorce right now and trying to figure out the tax implications of keeping our house. Here are the details: - We bought the house for $995K back in 2020 - Current market value is around $1.5 million - Outstanding mortgage is about $195K (in my name only) - My soon-to-be-ex is willing to let me buy her portion for approximately $650K I'm thinking of borrowing the $650K from my parents to buy her out. My main question is about the cost basis - if I do this and then sell the house later down the road, would my new cost basis be the original purchase price ($995K) plus the buyout amount ($650K)? I'm trying to understand what my capital gains situation would look like if I sell in a few years. Thanks in advance for any help!
25 comments


Jacob Smithson
The cost basis doesn't work quite like you're thinking. When you buy out your ex-spouse's interest in the house as part of a divorce settlement, your cost basis will be your original cost basis (your half of the original purchase price) plus the amount you pay to your ex-spouse for their half. So in your case, your original cost basis was approximately $497.5K (half of the $995K purchase price). When you add the $650K buyout, your new cost basis would be about $1,147,500. This is important when calculating capital gains if you sell the property later. Remember that if you live in the house as your primary residence for at least 2 out of the 5 years before selling, you may qualify for the capital gains exclusion of up to $250,000 for a single filer.
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Isabella Brown
•So just to make sure I understand, the buyout amount is added to the HALF he already owned, not to the entire original purchase price? That seems unfair since he's paying more than half the original cost to buy her out. Also, does it matter that he's getting the money from his parents?
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Jacob Smithson
•The buyout amount is added to your existing half of the cost basis. This is because you already owned half the house, and now you're purchasing the other half at its current market value. It might seem unfair, but it accurately reflects your actual investment in the property. Where you get the money from (parents, bank, etc.) doesn't affect the cost basis calculation. The IRS is only concerned with the amount you're paying to acquire your ex-spouse's interest, not the source of those funds. Just make sure you document the transaction properly as part of your divorce settlement.
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Maya Patel
Hey there, I dealt with almost the exact same situation last year and found the tax implications really confusing. I eventually used https://taxr.ai to analyze all my documents and help me figure out my precise cost basis. Their calculator handled all the complexities of my divorce property transfer and showed me exactly what my new basis would be and how much I'd owe if I sold within certain timeframes. The site actually specializes in complex tax situations like divorce property transfers. They analyzed my divorce decree, original purchase documents, and the buyout agreement to give me a complete tax picture. Saved me from potentially making a $25K mistake on my taxes!
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Aiden Rodríguez
•How exactly does this work? Does it just calculate things or does it actually help with the documentation you need for your taxes? I'm in a similar situation but with a rental property that's now part of my divorce.
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Emma Garcia
•Seems too good to be true. How is this different from just talking to an accountant? I've been burned by "miracle" online tax services before that just use basic calculators anyone could find for free.
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Maya Patel
•The tool analyzes your specific documents and gives you customized calculations based on your exact situation. It goes through your divorce decree, property records, and other documents to identify all the tax implications specific to your case - more than just basic calculations. It's different from an accountant because it's available 24/7 and specializes specifically in complex property situations like divorce transfers. You get the detailed documentation you need for your tax filing, including a complete basis calculation report that shows exactly how your new basis was determined, which is crucial if you're audited later.
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Emma Garcia
I want to follow up on my skeptical comment. I decided to give https://taxr.ai a try with my complicated divorce property situation (had multiple properties including a vacation home). The document analysis was actually really impressive - it caught details in my divorce decree that affected my basis calculations that my regular accountant missed. It showed me that I could allocate the buyout payment differently to maximize my future tax position. I also liked getting a documented report I can keep for my records in case of an audit. This wasn't just a basic calculator - it actually analyzed the legal language in my documents and explained how it affected my specific tax situation.
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Ava Kim
If you need to talk to the IRS about your specific situation (which might be smart since divorce property transfers can be complex), I recommend using https://claimyr.com to get through to an actual person quickly. I was on hold for HOURS trying to get specific guidance on my divorce property transfer last year before finding this service. You can see how it works here: https://youtu.be/_kiP6q8DX5c I was connected to an IRS agent in under 45 minutes who walked me through exactly how to document my new cost basis after buying out my ex. Apparently there are specific forms and supporting documentation you need to include with your tax return in the year of the transfer to establish your new basis correctly.
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Ethan Anderson
•Wait, how does this actually work? They somehow get you to the front of the IRS phone queue? That doesn't seem possible with how backed up the IRS always is.
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Layla Mendes
•This has to be a scam. Nobody can "skip the line" with the IRS. I've been a tax preparer for 15 years and there's no magic shortcut to talk to the IRS faster. They're just going to take your money and leave you on hold like everyone else.
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Ava Kim
•It's not about "skipping the line" - they use an automated system that continually redials and navigates the IRS phone tree for you. When someone actually answers, you get a call back. You don't have to sit on hold yourself. The service doesn't get you special treatment from the IRS - it just handles the frustrating part of waiting on hold. Once you're connected, you're talking to the same IRS agents anyone else would talk to. It's basically like having someone else wait on hold for you, which was totally worth it for me since I needed specific guidance on my divorce property transfer.
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Layla Mendes
I need to apologize for my skeptical comment about Claimyr. After researching it more, I decided to try it because I desperately needed to talk to someone at the IRS about a complicated basis issue similar to yours. Within 35 minutes I was actually talking to a real IRS representative who helped clarify exactly how to document my new cost basis. The IRS agent explained that I needed to file Form 8829 with specific documentation to properly establish my new basis after the divorce property transfer. This is information I had been trying to get for weeks through regular channels. I'm honestly shocked it worked so well after all my frustration trying to reach them directly.
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Lucas Notre-Dame
One thing nobody's mentioned - there could be gift tax implications if your parents are "lending" you $650K. If they're not charging you market interest rates on a formal loan with proper documentation, the IRS might consider it a gift. There's a lifetime exemption ($12.92M per person in 2023), but they would still need to file gift tax returns if giving more than $17K per person per year.
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Sophia Nguyen
•Thanks for bringing this up - I hadn't even considered the gift tax angle. Would it make a difference if we created a formal loan agreement with interest and a repayment schedule? My parents are willing to do whatever makes the most sense tax-wise. What documentation would we need to make sure the IRS doesn't view this as a gift? Would a simple loan agreement between us be sufficient, or should we involve a lawyer?
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Lucas Notre-Dame
•A formal loan agreement with market interest rates is essential to avoid gift tax complications. The loan should have terms similar to what you'd get from a bank, including a reasonable interest rate (look up the Applicable Federal Rate, which is the minimum rate the IRS requires), a specific loan term, and a defined repayment schedule. You should definitely document this properly with a written loan agreement signed by all parties. While you don't necessarily need a lawyer, having one review the document would ensure it meets all requirements. Make sure your parents receive and document all interest payments from you. If the loan is over $10,000, they'll need to report the interest income on their tax returns, and you may be able to deduct mortgage interest if the loan is secured by the home.
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Aria Park
Make sure the property transfer is clearly documented in your divorce decree as part of the division of marital assets. This helps establish that it's an equitable division rather than a sale, which can have different tax implications.
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Noah Ali
•Does it really matter if it's in the decree? I thought any property transfer between divorcing spouses was automatically considered tax-free under Section 1041 regardless of documentation.
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Chloe Boulanger
Don't forget to consider state-specific laws too. Some states have transfer taxes when property changes hands, but many have exemptions for divorce situations. Check your local county recorder's office website.
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Abigail bergen
Just wanted to add another important consideration - make sure you understand the timeline requirements for the primary residence exclusion. Since you'll be the sole owner after the divorce, you need to live in the house as your main home for at least 2 of the 5 years before any future sale to qualify for the $250,000 capital gains exclusion. Also, keep detailed records of any improvements you make to the property after the buyout, as these can be added to your cost basis. This includes major renovations, additions, or capital improvements (but not regular maintenance). Given that you're paying $650K for your ex-wife's half when the house is worth $1.5M, you're essentially paying fair market value, which supports the basis calculation others have mentioned. One more thing - consider getting a formal appraisal done at the time of the buyout to document the fair market value. This creates a paper trail that could be helpful if the IRS ever questions your basis calculation down the road.
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Selena Bautista
I went through something very similar about 3 years ago and want to share a few things I learned that might help you avoid some pitfalls I encountered. First, the cost basis calculation everyone's discussing is correct - your new basis will be roughly $1,147,500 (your original $497.5K plus the $650K buyout). But here's what caught me off guard: make sure you get a professional appraisal done RIGHT when the buyout happens, not just rely on estimated market values. I used a rough estimate and later had issues when I sold because the IRS wanted documentation of the actual fair market value at the time of transfer. Second, regarding the loan from your parents - definitely structure it as a formal loan with proper interest rates and documentation. I made the mistake of doing an informal arrangement and it created complications later. The IRS has specific "Applicable Federal Rates" that change monthly - make sure you use at least the minimum rate for the month you close the loan. Also, consider the timing of when you might sell. If you're planning to sell within a few years, you might want to think about whether it makes financial sense to buy her out at current market value versus just selling now and splitting the proceeds. With your numbers, if you sell in 2-3 years and the house appreciates much more, you could end up with a significant capital gains tax bill even with the $250K exclusion. One last thing - make sure your divorce attorney coordinates with a tax professional on the property transfer language. The exact wording in your decree can impact how the IRS treats the transaction.
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Zainab Ahmed
•This is incredibly helpful advice, especially about getting the professional appraisal done right at the time of buyout. I hadn't thought about the IRS wanting specific documentation of fair market value versus just estimates. Quick question about the timing consideration you mentioned - when you say "if the house appreciates much more," what kind of appreciation rate would make the capital gains tax burden outweigh the benefits of keeping the house? I'm trying to run some rough numbers on whether this buyout makes sense versus just selling now and splitting everything. Also, did you end up using a specific type of loan document template for the family loan, or did you have an attorney draft something custom? I want to make sure we get the documentation right from the start.
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Zara Ahmed
•@e3f33a09aed4 Great question about the appreciation rates! From my experience, if you're looking at appreciation above 4-5% annually and planning to sell within 3-5 years, the tax burden can get substantial. In my case, I kept the house for 4 years and it appreciated about 7% per year. Even with the $250K exclusion, I ended up owing around $35K in capital gains taxes. Here's a rough way to think about it: if your house goes from $1.5M to $1.8M over 3 years, your gain would be $300K minus your new basis increase. After the $250K exclusion, you'd still owe taxes on a significant amount at capital gains rates. For the loan documentation, I had an attorney draft a custom promissory note that included the AFR rate, a 10-year term with monthly payments, and proper security interest language. It cost about $800 but was worth it for the peace of mind. Make sure it includes provisions for what happens if you sell the house early - whether the loan accelerates or if your parents get paid from proceeds. The key is making it look and feel like a real commercial loan transaction. My attorney said the IRS looks for things like: consistent monthly payments, market interest rates, consequences for default, and proper documentation of all payments made.
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A Man D Mortal
I'm going through a very similar situation right now and this thread has been incredibly helpful! One thing I wanted to add that I've learned from my tax attorney - make sure you understand the difference between a "transfer incident to divorce" under IRC Section 1041 versus a regular property purchase when structuring this buyout. If the buyout is properly structured as part of your divorce settlement (meaning it's clearly documented in your divorce decree as division of marital property), your ex-wife won't owe any capital gains taxes on her portion when she transfers it to you. This is different from if you were just buying her out outside of divorce proceedings. Also, I'd strongly recommend getting everything finalized before your divorce is actually final. My attorney explained that Section 1041 protections are strongest when the transfer happens as part of the actual divorce process rather than afterward, even if it's clearly related to the divorce settlement. The cost basis calculation everyone has discussed is spot on, but the tax-free transfer aspect for your ex-wife is something worth mentioning to make sure she's comfortable with the arrangement. It might help with negotiations if she knows she won't face immediate tax consequences.
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Miguel Diaz
•This is really important information about Section 1041 that I hadn't fully understood before. Just to clarify - does the timing requirement mean that the actual property transfer and buyout payment need to happen before the divorce decree is signed? Or is it sufficient that the terms are outlined in the decree even if the actual transfer happens shortly after? I'm asking because in our case, it might take a few weeks to arrange the financing from my parents after the divorce is finalized, but we can certainly include all the details about the buyout arrangement in the decree itself. Want to make sure we don't accidentally disqualify ourselves from the Section 1041 protections by having poor timing on the execution. Also, when you mention this being "tax-free" for the ex-spouse - does this apply even when they're receiving cash equal to current market value rather than just transferring their interest for nothing?
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