When your fund’s tax statement says a portion of your dividends is U.S. government interest, it means the fund earned some of that money from Treasury securities, and that slice keeps its Treasury character when it reaches you. It stays fully taxable on your federal return, but most states cannot tax it. Claiming the break is a state-return step, and the number you need is not on your Form 1099-DIV.
Where the Number Comes From
A mutual fund or ETF that holds Treasury Bills, Notes, or Bonds collects interest on those securities all year. When the fund distributes a dividend, part of that payment traces back to Treasury interest. Federal law treats the fund as a pass-through, so the Treasury interest keeps its original tax character in your hands, just as if you had bought the bonds directly.
The fund calculates the qualifying percentage based on its average daily investment in Treasuries over the year. A Treasury money market fund can report percentages above 90%. A diversified bond fund that mixes Treasuries with corporate debt might report single digits.
Why the Exemption Is a State-Return Item
Federal law bars states from taxing interest on obligations of the United States. The Public Debt Statute says stocks and obligations of the United States are exempt from state and local taxation, with narrow exceptions for corporate franchise taxes and estate or inheritance taxes.1Office of the Law Revision Counsel. 31 USC 3124 – Exemption From Taxation The same interest is fully taxable on your federal return. So the entire Box 1a amount from your 1099-DIV goes on your federal return as ordinary dividends; the subtraction happens only when you get to the state return.
If you live in a state with no personal income tax, none of this affects you. Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming do not tax this income to begin with.
What Counts as a U.S. Government Obligation
The exemption covers direct obligations of the U.S. Treasury: Treasury Bills, Treasury Notes, Treasury Bonds, and Treasury Inflation-Protected Securities. Interest from Series EE and Series I Savings Bonds also qualifies.2Internal Revenue Service. Publication 550 (2025), Investment Income and Expenses
Federal Home Loan Bank bonds and debentures are also exempt from state and local income tax, but under their own enabling law rather than under the Treasury statute.3Office of the Law Revision Counsel. 12 USC 1433 – Exemption From Taxation Funds that hold FHLB paper generally include it in the U.S. Government Interest calculation, though practices vary.
What Does Not Count
Fannie Mae and Freddie Mac debt does not qualify. They are government-sponsored enterprises, not the Treasury, and states can tax the interest freely even though both are in federal conservatorship.
Ginnie Mae is the trickier one. Ginnie Mae securities carry the full faith and credit guarantee of the United States.4Ginnie Mae. Funding Government Lending The guarantee covers timely payment, but it does not change the character of the underlying income, which comes from home mortgages rather than Treasury borrowing. States can tax that interest.
Foreign government bonds get no exemption under 31 U.S.C. ยง 3124, which applies only to U.S. obligations. Interest from foreign sovereign debt held in a fund is taxable at both the federal and state level.
State Threshold Rules That Can Wipe Out the Break
Not every state lets you subtract whatever fraction qualifies. Many impose a minimum asset threshold: the fund must hold at least a set percentage of its assets in qualifying U.S. obligations at the end of each quarter, or the exemption disappears entirely, not just on the shortfall.5Investment Company Institute. Survey of State Income Taxation of Dividends Paid by a RIC The most common threshold is 50%.
This is where diversified bond funds create a trap. A fund with 40% Treasuries and 60% corporate bonds may report a real dollar figure of U.S. Government Interest, but in a 50% threshold state, none of it qualifies. Fund companies usually disclose whether their fund meets the threshold, often on the same supplemental tax document that carries the percentage. Check your state’s rule before claiming anything.
Finding the Dollar Amount and Reporting It
The exempt amount is not broken out on your 1099-DIV. Box 1a shows total ordinary dividends and lumps Treasury interest in with everything else.6Internal Revenue Service. Form 1099-DIV – Dividends and Distributions To find the U.S. Government Interest figure you need the fund’s supplemental tax statement, sometimes called a Tax Information Statement. It usually arrives in February and often comes separately from the 1099-DIV itself.
Fund companies report the qualifying share as a percentage, not a dollar amount. Multiply the percentage by the fund’s Box 1a total to get your subtraction. If Box 1a shows $5,000 and the fund reports 62% from U.S. government securities, the state subtraction for that fund is $3,100. Do the calculation for each fund you own; percentages vary widely.
On the federal return, report the whole Box 1a amount as ordinary dividends on Schedule B if required. On the state return, enter the subtraction on the additions-and-subtractions schedule. Most states have a specific line for U.S. government interest. Tax software usually has a field for it, but rarely fills it in for you. Skip the entry and you overpay your state on income that was never state-taxable.
If You Missed It in Prior Years
If you never claimed the subtraction on past state returns, you can generally file an amended state return to recover the overpayment. Most states allow amended returns within three years of the original filing date or within a set period after payment, with the exact window varying by state. On the federal side, amended returns are allowed within three years of the original filing or two years from when the tax was paid, whichever is later.7Internal Revenue Service. Topic No. 308, Amended Returns You will need the fund’s supplemental tax statement for each year in question. Fund companies can usually reissue them, though retrieving old statements is not always quick.
Keep the Supplemental Statement
The supplemental tax statement is the only document proving your state subtraction was legitimate. Keep it with your 1099-DIV for at least three years after you file the return that used it.8Internal Revenue Service. How Long Should I Keep Records? Lose it, and you have nothing to hand the state auditor who questions the subtraction.