1099-DIV box guide
1099-DIV Box 12: Exempt-interest dividends
Report exempt-interest dividends without treating them as ordinary taxable dividends.
Return destination
Where the amount goes
Form 1040 tax-exempt interest
1099-DIV
Return to the complete form guide and reconciliation worksheet.
Checks before filing
- Do not add Box 12 to Box 1a.
- Check the fund statement for state-source percentages.
- Keep Box 13 private activity bond interest identified separately.
How Box 12 works
Box 12 reports exempt-interest dividends distributed by a mutual fund or other regulated investment company that itself holds tax-exempt municipal bonds. Even though these dividends are generally excluded from federal taxable income, the instructions still require them to be reported — they aren't simply left off the return the way genuinely nontaxable items sometimes are.
Box 12 already includes any specified private activity bond interest dividends that are broken out separately in Box 13, so the two boxes aren't added together; Box 13 is a component that tells you which slice of Box 12 came from private activity bonds specifically. Fund year-end supplemental statements frequently also show a state-by-state percentage breakdown of the underlying municipal bond sources, which matters for state-return purposes even though it isn't itself a numbered box on the federal form.
The federally tax-exempt treatment of Box 12 doesn't automatically extend to state income tax; many states only exempt interest from bonds issued within that state, so a fund holding municipal bonds from many different states can produce a mix of state-taxable and state-exempt amounts that requires the supplemental percentage breakdown to sort out. Reporting exempt-interest dividends can also matter for calculations elsewhere on the return that key off tax-exempt interest even though the dividend itself isn't taxed federally.
Worked example
A taxpayer's municipal bond fund reports Box 12 of $600 in exempt-interest dividends, of which $50 is separately identified in Box 13 as attributable to specified private activity bonds. The taxpayer reports the full $600 as tax-exempt interest on the federal return (not added to Box 1a ordinary dividends), and separately notes the $50 private activity bond portion for the alternative minimum tax analysis.
Related 1099-DIV boxes
Box 1a: Total ordinary dividends
Report total ordinary dividends without adding qualified dividends from Box 1b twice.
Box 1b: Qualified dividends
Identify the part of ordinary dividends potentially eligible for qualified-dividend tax rates.
Box 2a: Total capital gain distributions
Carry long-term capital gain distributions to Schedule D or direct reporting when permitted.
Boxes 2b-2f: Special capital gain categories
Separate section 1250, section 1202, collectibles, and section 897 gain categories.
Frequently asked questions
What does Box 12 mean on 1099-DIV?
Box 12 reports exempt-interest dividends, generally from a mutual fund or regulated investment company. They are generally federally tax-exempt but still reportable.
If Box 12 is tax-exempt, do I even need to put it on my return?
Yes. Exempt-interest dividends are generally excluded from federal taxable income, but the instructions still require reporting the amount on the return; it isn't simply omitted.
Is my Box 12 amount also exempt from state income tax?
Not necessarily. Many states only exempt interest from bonds issued within that state, so a fund holding bonds from multiple states can produce a mix of state-taxable and state-exempt amounts — check the fund's supplemental state breakdown.
Do I add Box 12 to my ordinary dividends in Box 1a?
No. Exempt-interest dividends are reported as tax-exempt interest, separate from the ordinary dividends reported in Box 1a — the two are different categories on the return.