Ohio Rev. Code Ann. § 1782.29

The profits, losses, income, gains, deductions, credits, or similar items of a limited partnership shall be allocated among the partners and classes of partners in the manner provided in writing in the partnership agreement. If the partnership agreement does not so provide in writing, such allocations shall be made on the basis of the value, as stated in the partnership records required to be kept pursuant to section 1782.05 of the Revised Code, of the contributions made by each partner to the extent they have been received by the partnership and have not been returned.