Exceptions: A deduction is allowed for a contribution of less than the donor’s entire interest in property in the following instances:
(1) The taxpayer donates an irrevocable remainder interest in a personal residence or farm;3(2) The taxpayer makes a qualified conservation contribution;4 or
(3) The taxpayer donates an undivided portion of his entire interest.5 An undivided portion is a fraction or percentage of each and every substantial interest or right owned by the donor in property and the fraction or percentage extends over the entire term of the donor’s interest in the property and in other property into which that property is converted.6 The right to possession of an undivided portion of the taxpayer’s entire interest has been held sufficient to constitute a charitable gift, even where the donee did not actually choose to take possession.7 The possibility that a charity’s undivided fractional interest may be divested upon the occurrence or nonoccurrence of some event has been determined not to defeat an otherwise deductible contribution where the possibility is deemed so remote as to be negligible.8
The IRS has also found that a charitable gift of an “overriding royalty interest” or a “net profits interest” in an oil and gas lease did not constitute an undivided portion of the donor’s entire interest in an oil and gas lease where the donor owned a working interest under the lease.9
The IRS has ruled privately that a donor’s transfer of a life insurance policy to a charity, where the donor retained bare legal title, was not a retention of a substantial interest for purposes of the partial interest rule. Thus, the donor did not violate the partial interest rule, and was allowed to claim the charitable contribution deduction on the first day following the end of the 30-day cancellation period.10