Thanks for asking your question! I'm sorry to hear about your tax issue and I'm going to try my best to help you understand or resolve it.
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To start with your business valuation, I would contact a CPA with an ABV credential as well
These are professionals who possess the knowledge to value your business. This is not something you should attempt on your own
You can find one in your state by visiting this website: http://www.aicpa.org/ForThePublic/FindACPA/Pages/Find-an-ABV.aspx
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