Goodwill is defined as the present value of a firm's anticipated excess earnings. The value of goodwill is affected by factors like location, nature of business, management efficiency, time, market situation, and special advantages. Goodwill needs to be valued when there are changes in profit sharing ratios, admissions or retirements of partners, dissolution of the firm, or amalgamation. Common methods to value goodwill include the average profit method, weighted average profit method, super profit method, capitalization method, and present value of super profit method. The sacrificing ratio is the amount of profit share old partners agree to sacrifice for an incoming partner.