Okla. Stat. tit. 74E § 2.61
An individual who holds a fund-raising event for a political party committee, political action committee or candidate committee in an office or other nonresidential building may expend personal funds for costs related to the fund-raising event, provided the office or other building is owned or exclusively leased or rented by the individual. This expenditure shall be considered an in-kind contribution to the political party committee, political action committee or candidate committee to the extent that costs exceed One Thousand Dollars ($1,000.00). The exclusion of One Thousand Dollars ($1,000.00) shall apply no more than once per year for a political party committee or a political action committee and no more than once per campaign for a candidate committee. If the office or other nonresidential building is owned by any person other than the individual, use of the space and any other costs associated with the fund-raising event shall be considered an in-kind contribution unless the political party committee, political action committee or candidate committee pays the costs associated with the fund-raising event, including fair market value for use of the space. This section shall not be construed to permit a corporation to make an in-kind contribution to a political party committee, political action committee or candidate committee.
Okla. Stat. tit. 74E, § 2.61