Example 1: A taxpayer, pursuant to the terms of a lease, pays the lessor $12,000 a year rent plus taxes in the amount of $2,000 and interest on a mortgage in the amount of $1,000

The annual rent is $15,000. Example 2: A taxpayer stores part of its inventory in a public warehouse. The total charge for the year was $1,000 of which $700 was for the use of storage space and $300 for inventory insurance, handling and shipping charges, and C.O.D. collections. The annual rent is $700. Rent does not include incidental day-to-day expenses such as hotel or motel (3) accommodations, or daily rental of motor vehicles. Rent does not include royalties based on extraction of natural resources, whether represented (4) by delivery or purchase. For this purpose, a royalty includes any consideration conveyed or credited to a holder of an interest in property which constitutes a sharing of current or future production of natural resources from such property, irrespective of the method of payment or how such consideration may be characterized, whether as a royalty, advance royalty, rental, or otherwise. Leasehold improvements, for purposes of the property factor, shall be treated as property owned (c) by the taxpayer regardless of whether the taxpayer is entitled to remove the improvements or the improvements revert to the lessor upon expiration of the lease. Hence, the original cost of leasehold improvements shall be included in the factor. If a payment is made by a taxpayer to acquire a leasehold interest or a leased fee, rent includes the (d) portion of the payment that is reported by the taxpayer as rental expense.