Updated August 2026
“Maturity” trips people up because savings bonds have two different milestones:
The bond's value is frozen. Every month you keep holding it, inflation erodes real value, and the IRS technically expects the accumulated interest to be reported in the year of final maturity even if you haven't cashed the bond — a rule that surprises many estates. The practical move: identify matured bonds, cash them, and reinvest.
Add your bonds to the free inventory — each one is automatically labeled earning or matured with its exact final-maturity month, and the totals show how much is sitting in zero-earning paper.
Say you find a $50 Series EE bond issued in January 1990. Its final maturity — 30 years from issue — landed in January 2020, so it's been sitting frozen, earning nothing, for years already. A $50 Series I bond issued in March 1999 has a final maturity of March 2029 — it's still earning today. Same face value, same rough era, completely different status. That's the whole reason maturity has to be checked bond-by-bond rather than assumed from age alone; enter the exact series and issue month into the calculator above to see which bucket a specific bond falls into and its exact frozen or current value.
EE bonds issued since June 2003 are guaranteed to double in value at the 20-year mark — but that's a value milestone, not an interest-stopping one. The bond keeps earning its stated rate for another 10 years after doubling, until it hits the real 30-year final maturity. Cashing right at the 20-year doubling point, assuming that's "done," leaves up to a decade of further interest on the table.
For bonds using the common cash-method reporting approach, accrued interest is taxable in whichever comes first: the year you cash the bond, or the year it reaches final maturity — even if it's still sitting in a drawer uncashed. That surprises a lot of estates holding long-matured E bonds. Full details, including the deceased-owner rules, are in the tax guide.
Does final maturity mean the bond is worthless? No — it means it stops earning more, but it keeps its frozen redemption value and can still be cashed for that amount at any time.
How do I know without checking every bond by hand? Add your whole stack to the free inventory once — it flags matured bonds automatically going forward.