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Investor Professor
With part of its interest rate based on the rate of inflation, Series I savings bonds might be worth a look in the current environment.
by Charles Meyer | June 2022
In October 1985, I told my clients that “there is probably no other investment on the market today that offers as high a return/risk ratio” in making the case for U.S. savings bonds. [The AAII Journal published an article by Meyer in August 1986 stating his case.]
At the time, I was discussing EE savings bonds (which are no longer available with a variable interest rate) available at your local bank. Beginning in 1982—around the time I started my investment advisory firm—this updated version of the U.S. savings bond (even going back as far as war bonds)—had been made more attractive by guaranteeing a minimum return of 7.5% when held for at least five years. (Higher yields were possible if the bonds were held longer than five years.)
Regardless of the fact that U.S. savings bonds were backed by the “full faith and credit of the U.S. government,” they remained something of a “snoozer” because they were complicated to own and manage: During the period of May 1941 through October 1982, in which non-market-based interest E and EE bonds were issued, the guaranteed minimum interest rate was adjusted 19 times. It was complicated to understand the redemption rates/tables, and the bonds were issued only in paper form and thus liable to loss or theft.
Unlike just about every other investment product, EE bonds were “authorized” by Uncle Sam—not sold by securities and insurance firms and their commissioned brokers. Salespeople didn’t get rich recommending savings bonds, even though they were quite a good deal.
Though the EE bonds that are issued now earn a fixed rate of return, a different savings bond is available that offers an excellent current yield and semiannual adjustments for inflation. Through October 2022 these bonds can be purchased to yield 9.62%. This rate applies for the first six months you own the bond, and could possibly be higher there-after, depending on changes to the consumer price index (CPI)—meaning if inflation continues to rise.
This instrument is the U.S. Treasury Series I bond. Individuals may buy $10,000 of I bonds per year (spouses can purchase $10,000 each year if they have separate accounts). That’s a lot more than couples are earning now on their cash and it’s about as safe a place as you’ll find for cash.
The interest structure is somewhat complicated: It’s a combination of a fixed rate that does not vary over the life of the bond and an inflation rate that is set twice a year. For bonds issued from May 2022 through October 2022, the rate is 9.62%, up from 7.12% paid during the prior six-month period.
You must open an electronic account at the Treasury to purchase I bonds. It shouldn’t take more than 10 minutes to set up an account and transfer the money electronically from a savings or checking account. You can find details here.
You may convert a paper bond issued before 2008 to an I bond regardless of the amount.
Unlike with the older EE bonds, you can determine the current value of I bonds simply by visiting your Treasury account.
I bonds may be cashed at any time after 12 months. You receive the original purchase price plus interest earned. I bonds are meant to be longer-term investments; if you redeem one within the first five years, you’ll lose the previous three months’ interest (e.g., if you redeem an I bond after 18 months, you’ll receive the first 15 months of interest).
The interest rate on I bonds each six-month period cannot fall below zero and the redemption value cannot decline.
I bonds increase in value on the first day of each month, and interest is compounded semiannually based on the issue date (the month and year in which full payment for the bond was received). Table 1 shows the dates that new rates take effect for I bonds depending on the month of issue.

It probably makes sense to allocate the amount of I bonds purchased among several denominations in case there is a need to raise cash during the holding period.
I bond interest is not taxed at the state or local levels. I bond interest is taxed at the federal level as ordinary income. Taxes on the interest paid can be deferred until redeemed so there may be some tax advantages to enjoy.
An I bond account can only be opened by an entity with either a Social Security number or taxpayer identification number (TIN). I’m afraid this means cash transferred from tax-deferred retirement accounts such as individual retirement accounts [e.g., IRA, SEP IRA, 401(k)]—along with other employer-sponsored retirement accounts—does not qualify. Individuals with tax-deferred retirement accounts holding substantial cash would have to take a taxable distribution from the retirement account to purchase I bonds.
Trusts can hold I bonds and other savings bonds. (See the TreasuryDirect website for more information.) Legal businesses (sole proprietorships, partnerships, LLCs and corporations) may utilize I bonds. Judging the tax implications of this type of withdrawal to fund I bonds will be a function of each person’s situation.
There are two ways to buy I bonds: in electronic form at www.treasurydirect.gov or in paper form by using any federal income tax refund you are eligible for.
I bonds are purchased at the face value. For example, you pay $50 for a $50 bond. (The bond increases in value as it earns interest.)
I bonds come in any amount to the penny for $25 or more (e.g., you could buy a $50.23 bond). Paper bonds are sold in $50, $100, $200, $500 and $1,000 denominations.
In a calendar year, you may purchase up to $10,000 in electronic I bonds at TreasuryDirect.gov and up to $5,000 in paper I bonds by applying your federal income tax refund. Bonds you buy for yourself and bonds you receive as gifts or via transfers count toward the limit. However, if a bond is transferred to you upon the death of the original owner, the amount doesn’t count toward your limit.
You may buy I bonds as gifts for any TreasuryDirect account holder, including children. The dollar amount of the gifts counts toward the annual limit of the recipient, not the giver. So, in any calendar year, you can buy up to $10,000 in electronic bonds and up to $5,000 in paper bonds for each person to whom you gift.
In my opinion, the Treasury website—and reporting about I bonds in general—is somewhat confusing. The wording used to describe the “initial interest rate” only quotes the yield of 9.62% that is paid on new bonds purchased between May and October 2022. However, the detail of how I bond interest is calculated is quite complicated.
Unlike the EE bonds previously referenced, which guaranteed a minimum interest rate of 7.5% for the life of the bond and which could be higher after an inflation adjustment, I bonds essentially only guarantee that your six-month yield on bonds held will not be less than zero (when, during deflationary periods, real yields can be negative after adjusting for inflation) and that your six-month yield will rise and fall with inflation.
I bonds have an annual interest rate derived from a fixed rate and a semiannual inflation rate. Interest, if any, is added to the bond monthly and is paid when you cash it.
You will know the fixed rate of interest used to help calculate interest on your bond when you buy it. That fixed rate does not change during the life of the bond. In my opinion, the Treasury should be more forthcoming about the fixed rate, which is currently 0.0%, but which was much higher 20+ years ago. This was during a period of high inflation when the fixed interest rate ranged between 3.4% and 3.6% during the first three years they were issued.
The fixed rate can become a multiplier in calculating the actual six-month rate, but certainly not now since it is zero. Between 1998 and 2008, the fixed rate declined from a high of 3.6% to a low of zero. It has since remained at or close to zero—only reaching 0.50% and 0.70% each during one six-month period. The Treasury announces the fixed rate for I bonds every six months. That fixed rate then applies to all I bonds issued during the next six months. The fixed rate is an annual rate. Compounding is semiannual. (The fixed rate announced in May 2022 was 0.0%.)
Unlike the fixed-rate component—which does not change for the life of the bond—the inflation rate can and usually does change. The inflation rate is set every six months in May and November, based on changes in the non-seasonally adjusted CPI for all urban consumers (CPI-U) for all items, including food and energy. The change is applied to a bond every six months from the bond’s issue date.
To get the actual rate of interest (sometimes referred to as the composite or earnings rate), the fixed rate and the inflation rate are combined using the following equation:
Composite rate = [Fixed rate + (2 × Semiannual inflation rate) + (Fixed rate × Semiannual inflation rate)]
The composite rate will never be less than zero. However, the composite rate can be lower than the fixed rate. If the inflation rate is negative (due to deflation), it can offset some of the fixed rate. If the inflation rate is so negative that it would take away more than the fixed rate, the composite rate is capped at zero. Since 1998, the composite rate has only been negative twice, when it was capped at zero for all bonds sold prior to 2009 (–2.78%) and again in 2015 (–0.80%) for bonds purchased between 2003 and 2015. Table 2 shows the historical fixed, inflation and composite rates since 2012.
Keep in mind that this 0.0% composite rate was only for one six-month period over the life of any bond held at the time. Those bonds purchased prior to 2003 were able to escape the 0.0% yield during 2015 because the fixed-rate multipliers ranging between 2.0% and 3.60% offset the –0.80% negative variable rate. They were not able to offset the –2.78% variable rate that occurred during 2009.
While I take issue with the way the Treasury describes the “guaranteed fixed rate” of this product, I don’t think it is currently particularly important, or even the strongest selling point. For the last five rate periods, the fixed rate has been 0.0%. Since 2008, it has been 0.0% in 16 of 29 periods, varying only three times (between 0.50% and 0.70%) with the balance being 0.30% or less.
The fixed rate can become a useful factor once it goes above 1%, and a significantly useful one when higher. For example, since 2008 the fixed rate has never been above 0.70%, and the current composite rates for all I bonds issued since then have averaged very close to the recent 7.12%. Bonds issued prior to 2008, with fixed rates between 1.0% and 3.6% (during a period generally of much higher inflation, until recently), are currently earning between 9.62% and as high as 13.39% during the current six-month period as of publication. Remember, at about the time bonds with high fixed rates were issued, purchasing a 30-year Treasury bond would have locked in a guaranteed 8%+ rate for the entire 30-year term. Even I bonds purchased with high fixed rates have never paid close to an 8% composite rate for any length of time.
If you made it through the previous section, you probably understand why such detail is not provided in the front-end description of I bonds on the Treasury.gov website.
You can find all this detail if you look for it, but we’re not talking about a simple money market account or certificate of deposit (CD) here. There will be a decision to make every six months on whether to cash in a bond for a better alternative or to buy more to lock in another favorable six-month rate. The fact that the current fixed rate is zero and can’t go any lower places the primary emphasis on the semiannual inflation rate component.
I bonds have appeal as a place to park cash for at least the next 12 months, and potentially longer, since the pace of inflation has accelerated, interest rates remain at historically low levels even though the Federal Reserve is raising rates and the interest rates paid by banks and money markets are minimal.
In my opinion, there is an argument to be made for using I bonds for cash yielding little or nothing in the interest rate and inflation environment that exists as I write this in May 2022, so long as you plan to hold them for at least 12 months. Regardless of how I bond rates will be revised again in November 2022, it’s very unlikely that you’ll find a better yield during 2022 on CDs and money markets.
Any time between now and October 2022, an I bond purchased will be guaranteed a 9.62% yield for a six-month term, after which it will earn interest at the new rate established in November 2022. If the rise in inflation persists, the November rate could be even higher for another six-month period. Conversely, should inflation subside by November, the new rate could be lower, even substantially lower.
But even if the November 2022 interest rate were to become zero, the 12-month average interest rate on the I bond would be 4.81%, which is much higher than the average interest rate cash is likely to yield on average over the next 12 months.
I bonds might also serve as surrogates to traditional bonds in a diversified stock and bond portfolio—in addition to serving as its cash component—since Treasury bonds across nearly all maturities are yielding nowhere near 9.62%. Once cash and bond yields begin to approach historically normal interest rates and maturities, it might then be prudent to redeem I bonds with their variable rates and build a ladder of Treasuries with varied maturities to lock in higher, considered risk-free, yields.
Investor Professor
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