State Tax on Interest, Dividends, U.S. Treasuries and Municipal Bonds

“Tax-exempt” is incomplete information.

The first question is:

Exempt from which tax?

U.S. Treasury obligations have federal protection

31 U.S.C. §3124 generally exempts U.S. government stocks and obligations from state and local taxation where the tax would require the obligation or its interest to be considered, subject to statutory exceptions.

“Government security” is not precise enough

Treasury bills, notes, bonds, savings bonds, federal agency securities, GSE obligations, repurchase agreements, and funds holding combinations of these assets do not automatically receive identical treatment.

Instrument-level authority matters.

Funds create a second layer

Owning a Treasury directly differs from owning a fund that owns Treasuries.

State treatment can depend on qualifying-asset percentages, measurement rules, minimum thresholds, and annual fund tax statements.

“This ETF owns Treasuries” does not mean “100% of the distribution is exempt from my state tax.”

Municipal bonds work differently

Qualifying municipal-bond interest can be federally exempt while a resident state distinguishes its own obligations from out-of-state obligations.

A bond can therefore be federally tax-exempt but taxable by the investor's resident state.

The constitutional issue has been tested

In Department of Revenue of Kentucky v. Davis, the Supreme Court upheld Kentucky's preferential treatment of its own municipal bonds against the Commerce Clause challenge presented.

Dividends generally follow a different framework

Ordinary dividends do not receive Treasury-style federal immunity. Residents commonly include them under ordinary state income rules; passive dividends of nonresidents often are not sourced to a state merely because the corporation is headquartered there.

The fund statement is part of the tax record

Preserve the annual state-tax information supplied by the fund sponsor. Qualifying percentages can change from year to year.

The PRISM principle

Do not ask whether the investment is “tax-exempt.”

Ask:

what income did this instrument produce, what law creates the exemption, and does that exemption apply in this state?