When people talk about calculating the value of goodwill in the context of donations, they often mean estimating the value of items donated to a charity such as Goodwill. In that setting, the value is not your personal sense of worth or the original retail price, but what those items would sell for in the used goods market. You can start by examining Goodwill or other thrift store pricing guides, which often list typical ranges for categories like shirts, pants, coats, or small appliances. Adjust within those ranges based on condition and brand. For business or accounting goodwill created in a purchase of a company, valuation becomes more complex and involves analyzing earnings and intangible assets, which typically requires a professional valuation. For charitable deduction purposes, focus on realistic resale prices for the donated property.