How to calculate capital gains tax on selling part of a larger property
Selling a portion of a larger, mortgaged property requires allocating the original purchase price, basis, and mortgage between the land kept and the land sold. Because it involves dividing ownership and improvements tied to a primary residence, the transaction triggers complex capital gains rules rather than a simple tax exemption.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1engage a CPA or EA to properly report the whole thing
- 2calculate the gain using the purchase basis and proceeds
- 3Letting the ex-spouse cut a check and moving on
- 4Consulting a CPA or state tax professional
- 5Reinvesting funds into the stock market
In their words
Unedited, most upvoted first, each linked to the thread it came from.
“What would the capital gains tax be on this sale?”source ↗
“We own (mortgaged) 15.44 acres of land which includes our primary home and improvements. We are considering selling off an unimproved section (5.5 acres) of said property.”source ↗
“If they have to pay me 225,000 to buy me out will I have to pay taxes on it if I just want to sit on the money until I decide to buy again? Capital gains? What am I missing?”source ↗
“It's a sale of ownership interest. It is taxed as if you sold the house.”source ↗
“You're selling a house (your ownership stake in it). You have all the tax penalties and benefits of the sale depending how long you owned it, if it was primary residence, and what you do with the money.”source ↗
Where this came up
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