Matured savings bonds are bonds that stopped earning interest at their 30-year final maturity date—yet they never expire and remain eligible for redemption at any time. You may still be holding them if you purchased U.S. Treasury savings bonds more than 30 years ago and have not yet cashed them in.
U.S. Treasury data confirms approximately $35.1 billion in matured, unredeemed savings bonds exist as of July 31, 2026, up from $7.8 billion in 2001. More than 75 million matured bonds remain unclaimed, often because owners forget about them or do not realize they have stopped earning interest. Redemption is free and takes minutes, but Treasury does not send automatic reminders when your bonds mature, so you must track this yourself.
Table of Contents
- When Does a Savings Bond Stop Earning Interest?
- How Redemption Works Depends on Your Bond Type
- The Unexpected Tax Bill You May Face
- How to Find Your Matured Bonds and Redeem Them
- Series E Bonds and Older Holdings
- Frequently Asked Questions
When Does a Savings Bond Stop Earning Interest?
Series EE and Series I savings bonds reach final maturity and stop accruing interest exactly 30 years from their issue date, according to Treasury Direct. This is a defined endpoint, not a gradual slowdown—after 30 years, the interest rate drops to zero and remains there.
Reaching final maturity is not the same as expiration. Matured bonds do not lose value, do not expire, and do not disappear. Treasury will redeem a matured bond at any time, whether you cash it one year later or thirty years later. The principal and all accrued interest remain yours indefinitely. This is why billions of dollars sit in matured bonds: the money is still there, still accessible, but earning nothing while it waits.
How Redemption Works Depends on Your Bond Type
The process to redeem a matured bond depends entirely on whether you hold a paper bond issued before 2002 or an electronic bond purchased through TreasuryDirect after 2002. Paper savings bonds issued before 2002 can be redeemed at most banks with a photo ID and no fee.
You can also mail them directly to Treasury with a completed form. No special account or online access is required. Electronic bonds purchased through TreasuryDirect after 2002, by contrast, can only be redeemed online through your TreasuryDirect account—no bank redemption option exists. Treasury guidance explains the step-by-step process for each type. A critical difference: electronic bonds automatically redeem and convert to a zero-percent Certificate of Indebtedness when they reach final maturity.
This removes your choice on timing. The accrued interest is reported to the IRS in the year the bond reaches maturity, meaning you cannot defer the tax hit by holding the bond longer.
The Unexpected Tax Bill You May Face
The interest you earned on a matured savings bond becomes taxable income in either the year the bond reaches final maturity or the year you cash it—whichever comes first. For electronic bonds, this happens automatically without your involvement; the IRS is notified in the maturity year. For paper bonds, you have some control: you can choose which year to redeem them and claim the interest.
This can create a surprise tax liability if you held bonds for decades and forgot about them. If your electronic bonds matured years ago and you never redeemed them, you may owe taxes on interest income you forgot to report. Consult your past tax returns to see if this interest was already claimed, or speak with a tax professional if you are unsure.
How to Find Your Matured Bonds and Redeem Them
If you hold paper bonds, locate any physical documents you may have—old filing cabinets, safe deposit boxes, insurance policies, or inherited records. Once found, take them to your bank with a photo ID, or mail them to Treasury with a redemption form. For electronic bonds, log into your TreasuryDirect account and review your holdings. Note the issue date of each bond and add 30 years to determine when it reaches final maturity.
Because Treasury does not send automatic notifications, you must track this date yourself—mark your calendar or set a reminder to check annually. If you believe you own bonds but cannot locate them, Treasury's website allows you to search for holdings registered in your name, including bonds from deceased account holders. No password or account login is required for this search. Start with TreasuryDirect's homepage and use their holding-lookup tool, or contact Treasury's customer service for assistance with missing or inherited bonds.
Series E Bonds and Older Holdings
Series E bonds, issued from 1941 to 1980, followed different rules than modern Series EE and I bonds. Depending on when they were issued, Series E bonds reached final maturity between 30 and 40 years from their issue date. This means any Series E bond issued before 1996 has long since stopped earning interest and is eligible for immediate redemption with no expiration deadline.
Series E bonds must be redeemed through a bank or by mail, as they predate the TreasuryDirect system. If you inherit these bonds or find them in old documents, they retain full value and can be cashed in immediately at current redemption rates.
Frequently Asked Questions
Do I lose money if I don't cash in a matured bond right away?
No. A matured bond's value stays the same forever. You lose only the potential interest you could have earned if the bond were still in its earning period—no principal is lost.
Will redeeming a matured bond create a big tax bill?
Only on the interest, not the principal. If you're redeeming a bond decades after it matured, the interest was likely reportable in the year the bond reached maturity. Check your past tax returns to see if you already claimed it.
How do I redeem a Series E bond my grandparent left me?
Take it to a bank with your ID, or mail it to Treasury with proof of your authority to act on the estate. Contact Treasury directly for specific instructions and required documentation for inherited bonds.