This Practice Note looks at the situations in which tax insurance may be used, the types of risks that may be covered, the steps involved in a typical underwriting process and the key terms of a tax insurance policy. In many situations, tax risks identified can be managed through the placement of a tax insurance policy. As with the use of warranty and indemnity (W&I) insurance in mergers and acquisitions (M&A) deals (see Practice Note: Warranty and indemnity insurance in M&A transactions), the use of tax insurance has become an increasingly common strategy to address contingent tax risks. Traditionally used for specific tax risks arising during a deal process, as the market has matured, tax insurance is used increasingly in non-transactional contexts. For information on the practical issues that a tax lawyer should consider when advising on an M&A transaction structured as a share sale where one of the parties will be taking out either W&I insurance or tax risk insurance, see Practice Note: Insured M&A transactions—a