The serial number is printed on the front of your bond, usually in the upper right corner

Every savings bond has a unique serial number printed directly on the certificate itself. On paper bonds, this number appears in the upper right corner of the front side, printed in large digits. The serial number is also repeated in smaller print elsewhere on the bond — typically in the lower left area — so you have a backup location if the first one is hard to read.

If you own a Series EE or Series I bond purchased after 2005, your bond exists only in digital form through TreasuryDirect. In that case, you won't have a physical certificate to look at. Instead, you'll find the serial number by logging into your TreasuryDirect account online and viewing your bond holdings. The system displays the serial number alongside the bond's issue date, denomination, and current value.

Key Takeaways

  • Paper bonds display the serial number in the upper right corner of the front, with a duplicate in smaller print on the lower left.
  • Digital bonds purchased through TreasuryDirect show the serial number in your online account under your bond holdings.
  • The serial number is a unique identifier that distinguishes your bond from every other bond ever issued.
  • You need the serial number to report a lost or stolen bond, to redeem it, or to provide proof of ownership to a financial institution.

Why you need the serial number

The serial number serves as your bond's fingerprint. It's the only way the U.S. Department of the Treasury can identify your specific bond in their records. When you redeem a bond, cash it at a bank, or report it lost or stolen, you'll need to provide this number so the Treasury can locate the exact certificate you're referring to.

If your bond is lost, damaged, or stolen, the serial number is essential for filing a claim with the Treasury. Without it, you cannot prove which bond you owned or request a replacement. Banks also ask for the serial number when you bring a bond in to cash it, as a verification step before they process the transaction.

How to read a paper bond serial number

The serial number on a paper bond is always printed in a standard format. Look at the upper right corner of the front of your bond — you'll see a series of digits, typically eight to ten characters long. Some bonds use letters and numbers together; others use numbers only. The exact format depends on the series and the year the bond was issued, but the location remains consistent across all paper bonds.

If the upper right corner is worn, faded, or damaged, check the lower left area of the bond. The same number appears there in smaller print. You can use either location to find the information you need. Write down the serial number and keep it in a safe place separate from the bond itself — this way, if the bond is lost, you'll still have the number on record.

Finding the serial number in TreasuryDirect

Log into your TreasuryDirect account at treasurydirect.gov using your username and password. Once you're logged in, navigate to the "ManageDirect" section and select "View Bonds." This page displays all your bonds, whether they are Series EE, Series I, or other types you may own.

Each bond listing shows the serial number alongside other details: the issue date, the denomination (the amount you paid), the current value, and the maturity date. The serial number for digital bonds is formatted the same way as paper bonds — a string of digits that uniquely identifies that bond. You can print this page or take a screenshot for your records.

What to do if you can't find the serial number

If you own a paper bond and the serial number is completely illegible due to damage or fading, contact the Treasury's Bureau of the Fiscal Service. You can reach them by phone at 844-284-2676 or by mail at the address listed on the Treasury website. Have your bond in hand when you call, and be prepared to provide other identifying information such as the issue date, series, and denomination.

For digital bonds, if you've forgotten your TreasuryDirect password, use the "Forgot Password" link on the login page to reset it. If you've lost access to your account entirely, the Treasury can help you regain access by verifying your identity. You won't need to know the serial number in advance — the Treasury will help you locate it once your account is restored.

Keeping your serial number safe

Write down your bond's serial number and store it somewhere separate from the bond itself. A home safe, a safe deposit box at your bank, or a digital file stored securely online all work well. If your bond is lost or stolen, having the serial number recorded elsewhere means you can still file a claim with the Treasury.

If you own multiple bonds, create a simple list with the serial number, series, denomination, and issue date for each one. Update this list whenever you purchase new bonds. This record becomes invaluable if you need to redeem bonds, report them missing, or provide proof of ownership to a bank or financial advisor.

Frequently Asked Questions

Is the serial number the same as the bond's denomination?

No. The denomination is the amount you paid for the bond — typically $25, $50, $100, or $500 for paper bonds, or any amount from $25 to $10,000 for digital bonds. The serial number is a separate identifier printed on the bond that distinguishes it from all other bonds. Both appear on the certificate, but they serve different purposes.

Can I redeem a bond if I've lost the serial number?

Yes, but it's more difficult. You'll need to contact the Treasury or your bank with other identifying information: the series, issue date, and denomination. The Treasury can search their records using these details, though the process takes longer than if you had the serial number ready. Having the serial number makes the process much faster.

Do I need the serial number to check my bond's current value?

For digital bonds in TreasuryDirect, you can see the current value by logging into your account — you don't need to know the serial number in advance. For paper bonds, you can use the Treasury's Savings Bond Calculator on treasurydirect.gov if you know the series, denomination, and issue date. The serial number is not required for value checks.

What if my bond has two different numbers printed on it?

Paper bonds often have multiple numbers printed in different locations. The serial number is the one in the upper right corner of the front. Other numbers on the bond may be control numbers, batch numbers, or other Treasury identifiers. When you need to provide the serial number, use the one from the upper right corner.