Iowa Administrative Code Title 701 — Department of Revenue
Iowa Admin. Code r. 701—302.56(422) — Taxation of income from the sale of obligations of the state of Iowa and its political subdivisions
For tax years beginning on or after January 1, 2001, income from the sale of obligations of the state of Iowa and its political subdivisions shall be added to Iowa net income to the extent not already included. Gains or losses from the sale or other disposition of bonds issued by the state of Iowa or its political subdivisions shall be included in Iowa net income unless the law authorizing these obligations specifically exempts the income from the sale or other disposition of the bonds from the Iowa individual income tax.
Source: official text