Liability.
Liability. The term liability means a liability of the taxpayer to render services or make available membership privileges over a period of time which does not exceed 36 months. Thus, if during the taxable year a taxpayer sells memberships for more than 36 months and also memberships for 36 months or less, section 456 does not apply to the income from the sale of memberships for more than 36 months. For the purpose of determining the duration of a liability, a bona fide renewal of a membership shall not be considered to be a part of the existing membership.