# Determining capital gains basis
**URL:** https://www.mineralrightsforum.com/t/determining-capital-gains-basis/34953
**Category:** Accounting and Taxes
**Created:** [October 10, 2018, 11:26pm UTC](https://www.mineralrightsforum.com/t/determining-capital-gains-basis/34953 "2018-10-10T23:26:36Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@MEB](https://www.mineralrightsforum.com/u/MEB)
#### Post date: [October 10, 2018, 11:26pm UTC](https://www.mineralrightsforum.com/t/determining-capital-gains-basis/34953/1 "2018-10-10T23:26:37Z")
I inherited a working interest in Glasscock/Reagan County in Texas in 2008. In 2018, I kept the existing wellbore and production in its Straberry formation but sold only the nonproducing Wolfcamp formation underneath it. I now need to determine the basis of this working interest for capital gains purposes. How would one determine the value of a working interest in a nonproducing formation? I sold the Wolfcamp formation for $15k an acre in 2018, so I would think the formation had some value in 2008. Would it be possible to see what other sales of Wolfcamp formations brought in 2008? Any other suggestions or comments? I have limited tax background. Thanks! MEB
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### Author:  [@MRFAdmin\_SV](https://www.mineralrightsforum.com/u/MRFAdmin_SV)
#### Post date: [January 11, 2025, 7:12pm UTC](https://www.mineralrightsforum.com/t/determining-capital-gains-basis/34953/2 "2025-01-11T19:12:55Z")