In general For purposes of paragraph (1), the term cost of business inputs means— (i) the amount paid for property sold or used in connection with a business activity, (ii) the amount paid for services (other than for the services of employees, including fringe benefits paid by reason of such services) in connection with a business activity, and (iii) any excise tax, sales tax, customs duty, or other separately stated levy imposed by a Federal, State, or local government on the purchase of property or services which are for use in connection with a business activity. Such term shall not include any tax imposed by chapter 2 or 21. (B) Exceptions Such term shall not include— (i) items described in subparagraphs (B) and (C) of paragraph (1), and (ii) items for personal use not in connection with any business activity. (C) Exchanges For purposes of this section, the amount treated as paid in connection with the exchange of property or services is the fair market value of the property or services exchanged, plus any money paid. (e) Special rules for financial intermediation service activities In the case of the business activity of providing financial intermediation services, the taxable income from such activity shall be equal to the value of the intermediation services provided in such activity. (f) Exception for services performed as employee For purposes of this section, the term business activity does not include the performance of services by an employee for the employee’s employer. (g) Carryover of credit-Equivalent of excess deductions (1) In general If the aggregate deductions for any taxable year exceed the gross active income for such taxable year, the credit-equivalent of such excess shall be allowed as a credit against the tax imposed by this section for the following taxable year. (2) Credit-equivalent of excess deductions For purposes of paragraph (1), the credit-equivalent of the excess described in paragraph (1) for any taxable year is an amount equal to— (A) the sum of— (i) such excess, plus (ii)