(f)(3) (iii)-(iv) [Reserved] For further guidance, see§ 1.861-9T(f)(3)(iii) and (iv) .
Example. Corporation X, a calendar year taxpayer, elects on its original, timely filed tax return for the taxable year ending December 31, 2007, to use the alternative tax book value method for its 2007 year. The alternative tax book value method applies to Corporation X's 2007 year and all subsequent taxable years. Corporation X may not, without the consent of the Commissioner, revoke its election and determine tax book value using a method other than the alternative tax book value method with respect to any taxable year beginning before January 1, 2012. However, Corporation X may automatically elect to change from the alternative tax book value method to the fair market value method for any open year.
26 C.F.R. §1.861-9