1. (a) For residents, "out-of-state income" consists of income from real or tangible personal property or business income outside the State of Oklahoma. Any amount deducted must be substantiated with the appropriate Federal schedule which sets out the Oklahoma portion.
2. (b) Losses sustained from property owned or from a business located outside the State of Oklahoma must be added to Federal adjusted gross income to arrive at Oklahoma adjusted gross income.
3. (c) Out-of-state income is limited to the net income from real or tangible personal property or net business income outside the State of Oklahoma. [See: 68 O.S. § 2358(A)(4)]

Amended at 17 Ok Reg 2669, eff 6-25-00

Amended at 42 Ok Reg, Number 20, effective 7-15-25