Iowa excludes certain types of interest income from Iowa taxable income when the interest is derived from qualifying Iowa state and municipal obligations or other securities that are specifically exempt under Iowa law. These exemptions may apply even if the interest income is included in federal taxable income.
For Iowa income tax purposes, taxpayers begin with federal taxable income and apply Iowa-specific additions and subtractions when required. Interest income must be reviewed to determine whether Iowa law provides a different tax treatment than federal law.
Exempt Interest Sources
Interest from certain Iowa state and municipal obligations may be exempt from Iowa income tax when the obligation qualifies under Iowa law. The exemption applies only to specific securities and programs authorized by Iowa statutes.
Examples of qualifying exempt obligations may include:
- Bonds issued by Iowa aviation authorities
- Bonds issued under Iowa beginning farmer loan programs
- Bonds issued for Iowa community college capital projects
- Bonds issued for community college residence halls and dormitories
- Bonds issued for county health care facility projects when authorized under Iowa law
- Bonds issued for Iowa E911 emergency telephone service programs
These exemptions apply only when the specific bond or obligation meets the requirements established under Iowa law. Not all municipal bond interest is automatically exempt from Iowa income tax.
General Tax Treatment
- Interest income is generally reported first according to federal tax rules.
- Iowa begins with federal taxable income and applies Iowa additions and subtractions when federal and Iowa treatment differs.
- Interest from qualifying Iowa-exempt state and municipal obligations is excluded from Iowa taxable income.
- Interest from non-exempt sources remains taxable unless another Iowa modification applies.
Reporting on Iowa Return
- Taxpayers should report interest income according to federal reporting requirements. If an interest item requires an Iowa adjustment because Iowa law treats the income differently, the adjustment is reported on Form IA 1040 Schedule 1, Line 1, as instructed by the Iowa Department of Revenue.
- Interest from qualifying Iowa-exempt obligations should be treated according to Iowa instructions and excluded from Iowa taxable income.
Important Notes
- Iowa’s exemption applies only to interest specifically exempt under Iowa law.
- Taxpayers should verify that the security qualifies before excluding interest from Iowa taxable income.
- Federal tax treatment and Iowa tax treatment may differ for certain interest income.
- Taxpayers should retain documentation identifying the type of security and the amount of exempt interest reported.
Source:
Form IA 1040
Disclaimer: Always verify with the most current Federal or State Department of Revenue Forms and Instructions, as tax laws and regulations may change.