Savings Bonds Let You Delay Federal Taxes Until Redemption. Here’s When That Works Best.

An old shoebox full of savings bonds can represent years of postponed federal tax, and the year you redeem them can be the difference between a manageable tax bill and a Medicare surcharge that lingers for years.

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Imagine a retired couple with a shoebox of paper savings bonds: gifts from birthdays, purchases made through payroll deductions, and a few inherited from a parent’s estate. They have never paid federal tax on the interest. The IRS is waiting for one of two moments: when the bonds are redeemed or when they stop earning interest.

That delay is one of the main advantages of Series EE and Series I savings bonds. You can choose the year the interest is reported on your return. If the timing is off, or if the calendar chooses for you, decades of interest can land in a single tax year. That one surge can push you into a higher bracket, make more of your Social Security taxable, and increase Medicare premiums.

How Savings Bond Tax Deferral Works

Most taxpayers file on a cash basis, and IRS rules give them two reporting choices. Under Method 1, you wait to report the interest until the earlier of the year you cash in or dispose of the bonds, or the year they mature. Under Method 2, you report the yearly increase in redemption value as interest each year.

The election applies to all of your bonds: the same method must be used for every Series EE and Series I bond you own. If you never reported the interest annually, Method 1 applies by default.

Two other rules are important. Interest on U.S. savings bonds is exempt from state and local taxes. And deferral ends at final maturity, when the bond stops earning interest. At that point, the deferred interest becomes taxable for that year whether or not you redeem the bond.

Deferral Works Best in a Low-Income Year

Deferral is most useful when you can control the timing. For many retirees, the best window comes after paychecks stop and before required minimum distributions or Social Security begin. Taxable income may be at a long-term low, allowing the bond interest to fill the lowest tax brackets first.

Timing around Social Security matters most. Under 26 U.S.C. §86, benefits begin to become taxable once modified adjusted gross income plus half of benefits exceeds $25,000 for most single filers or $32,000 on a joint return. A second threshold applies at $34,000 and $44,000. If you cash bonds before benefits begin, that interest is excluded from the formula entirely.

There is also a narrower education-related exception. Through the Education Savings Bond Program, it may be possible to exclude all or part of the interest if the money is used for tuition and fees for yourself, your spouse, or a dependent in the same year. The bond must be a Series EE bond issued after 1989 or a Series I bond, and the owner must have been at least 24 years old before the bond’s issue date. Married couples filing separately cannot use the exclusion. The phaseout range for 2025 ran from $99,500 to $114,500 of MAGI, or $149,250 to $179,250 on a joint return.

When Years of Interest Show Up All at Once

Bonds purchased in different years can reach final maturity together, and some owners redeem the entire batch at once. In either case, decades of interest can hit as ordinary income in a single year.

That increase can also raise Medicare costs through IRMAA, the income-related monthly adjustment amount. It is a surcharge on Medicare Parts B and D for higher-income beneficiaries, based on a tax return from two years earlier. For 2026, the standard Part B premium starts at $202.90 a month. A single filer with MAGI above $109,000, or a joint filer above $218,000, pays $284.10. Above $137,000 for single filers or $274,000 for joint filers, the premium rises to $405.80. A Part D surcharge beginning at $14.50 is added on top. Because each level is a threshold, even being one dollar over means paying the full higher premium.

Death creates another complication. If an owner who deferred taxes dies, the surviving spouse or executor can include on that final return all interest earned on the bonds before the decedent’s death. If they do not, the interest becomes income in respect of a decedent: income that was earned but never taxed, which the heir then reports. It may qualify for the estate tax deduction, but it does not receive a step-up in basis under 26 U.S.C. § 1014(c). It is one of several quiet IRS rules that can affect retirement finances at the worst possible time.

Three Steps to Take Before the Bonds Decide for You

1. Locate every bond. Check safes, files, and a parent’s papers. The issue date is printed in the upper-right corner of a paper bond and appears in TreasuryDirect for an electronic bond.
2. Check maturity status in TreasuryDirect. A bond that has passed final maturity earns nothing. If it matured in an earlier year, that was the year the interest should have been reported, and that may be worth discussing with a tax preparer.
3. Stagger redemptions. Cash part of the bonds each year so the income stays below the next bracket or IRMAA threshold. Switching to annual reporting under Method 2 is another option, since IRS rules allow that change.

Pick the Tax Year Before the Calendar Does

Savings bond deferral rewards owners who plan the year they cash out. It penalizes those who let final maturity dates or an estate choose the year for them. Coordinating redemptions with Social Security, required minimum distributions, and IRMAA thresholds is the kind of math worth reviewing with a CPA or fiduciary tax advisor before the bonds stop earning interest.