I versus EE: the difference in a nutshell

Thursday, February 24th, 2005
Categorized as: Series EE US Savings BondsSeries I US Savings Bonds

I was wondering what the difference (in a nutshell) is between Series I and EE Savings Bonds. When I read about how the interest is accrued, I get lost along the way.

Tom’s response

Have you ever noticed how prices tend to rise over time on the same stuff?

When I was a dust-covered boy in Kansas, my doctor’s office had a five-cent Coca-Cola machine. Even if you adjust for the fact that today’s Coke machines give you cans twice as big as the 6-ounce bottles of the 1950s, today’s price is much higher.

That’s called inflation. The government’s Bureau of Labor Statistics collects the average prices people are paying every month and uses the data to produce the Consumer Price Index.

Series I Bonds are designed to protect you from inflation. The interest rate paid by Series I bonds includes a component that’s fixed for the life of the bond when you buy it, plus the rate of inflation as determined by the Consumer Price Index. The Treasury calculates a new interest rate for Series I bonds every six months.

New Series EE Bonds, on the other hand, have fixed interest rates that are adjusted just once during the 30 year life of the bond – at the bond’s 20th anniversary. To make any money, your EE bonds have to pay more than the inflation rate during the time you hold the bond, but you don’t know what future inflation rates will be when you invest.

Since I bonds were introduced in 1998, they have outperformed Series EE bonds.

Rate this post (1 to 5 stars):  1 Star2 Stars3 Stars4 Stars5 Stars
(Average rating: 3.74 stars)

FDIC Insured Certificates of Deposit can pay 1 or 2% more than savings bonds when held for a similar length of time. See top CD Rates Below:


On February 5th, 2010 Dennis Levy said:

I have 2 IRA Roth CD’s due for appox $6400 and want to role it over into another investment. Can I buy IRA Roth Series I bonds with this roll over money from the CD’s? Thank you.

Dennis Levy

On February 8th, 2010 Tom Adams said:

Dennis – I don’t know of any Roth IRA trustees that will invest in Savings Bonds for you, so although this may be technically possible it’s not possible in a practical way.

Tom Adams

[…] Lesson 1: Types of Savings bonds – There are currently two different types of savings bonds available to buy and not understanding the difference can cost you a lot of money.  Let us run you through the ins and outs of buying the EE and i Series Savings bonds. […]

Comments Closed

June 1, 2010

After six years, over 400 posts, 3,680 real comments, and over 90,000 spam comments (thank you, Akismet, for making managing a blog with comments possible), I am closing public comments on Savings-Bond-Advisor.com. I will contine to update the main articles on this site, but not the comments.

Virtually every question about Savings Bonds has been asked and answered on this site multiple times. Use the search feature (see the box in the gray area near the top of this page) or the detailed menu on the lower part of the home page to find the information you're looking for. If you have a copy of Savings Bond Advisor, you can ask me a question here.

Tom Adams

Savings Bond Calculator


Savings Bond

Get an answer to your questions from the Treasury's Savings Bonds team.

Click below to ask a question.

Ask the Treasury


Invest online in Savings Bonds or
marketable Treasury securities.

Deal directly with the U.S. Treasury.

More info


Log in