Tax deductibility of goodwill refers to the ability to write off the cost of goodwill as an expense for tax purposes over a period of time.

Tax structure refers to the system or framework a government uses to collect taxes from individuals and businesses. It includes the types of taxes imposed, the rates at which they are levied, and the rules and regulations governing their collection.

A taxable asset deal is a transaction where a buyer purchases specific assets of a company rather than its stock, and the sale is subject to taxation.

A tax-free asset deal is a transaction in which the purchase and sale of a company’s assets are structured in a way that the transaction qualifies for tax deferral under certain conditions set by tax authorities.

Terminal value refers to the estimated value of an investment or business at the end of a specific period. It represents the value that continues beyond the projected period. Terminal value is calculated using methods that forecast future cash flows or earnings and apply a valuation multiple or growth rate. It helps investors and analysts understand the long-term value of an investment. However, it's important to remember that terminal value is an estimate and involves assumptions and uncertainties.

A tertiary buyout, also known as a third-stage buyout, refers to a transaction where a private equity firm acquires a company that has already been through two previous buyouts.