What USPAP standards apply to business valuation appraisals?

USPAP's Standards 9 and 10 govern business valuation: Standard 9 covers developing a business appraisal, and Standard 10 covers reporting its results. USPAP also contains standards for real property, personal property, and mass appraisal. Unlike real property appraisers, business valuation professionals are not required by law to comply, though many organizations adopt USPAP and courts increasingly recognize it as a professional standard.