Im selling my company stock to my partner. How do you put a value on stock? Cash + Receivables + Equity + contracts. I own 37.5% he owns 62.5% we

Specific industries generally have specific formulae which are applied by experts to value their business.  For example, businesses in many industries are valued as a multiple of gross sales.  A stationery business might be valued at 5x gross sales, a grocery at 3x gross sales, etc.  Other businesses might use other formulae.  You should find an accountant who is knowledgeable about the industry to provide you with a value.  If there is a trade association in your industry, it should be able to help you find an expert valuator who can do the appraisal dheaply.