This leads to widespread use of life insurance as a tax-efficient method of saving as well as protection in the event of early death. Claims may be filed by insureds directly with the insurer or through brokers or agents. Claims and loss handling is the materialized utility of insurance; it is the actual "product" paid for. The insurer may require that the claim be filed on its own proprietary forms, or may accept claims on a standard industry form, such as those produced by ACORD. In many countries, such as the United States and the UK, the tax law provides that the interest on this cash value is not taxable under certain circumstances.