
Holding onto I bonds for the long haul can be a smart move, especially considering the tax benefits. If you hold an I bond for 5 years, you can earn interest without paying federal taxes on it.
The interest rate on I bonds is adjusted semiannually, which means you can earn even more money over time. This rate is tied to inflation, so as prices rise, so does your interest rate.
To maximize your earnings, it's generally recommended to hold I bonds for at least 20 years. This allows you to take advantage of the compounding interest and reap the rewards of a long-term investment.
At a Glance
I bonds are a type of savings bond that can be a great way to save for the future.
You can buy I bonds in your TreasuryDirect account, and as of January 1, 2025, they are only available electronically. This is a change from the past, when you could buy them in paper form.
I bonds earn interest monthly, and the interest is compounded semiannually, meaning it's applied to a new principal value every 6 months. This causes your bond's value to grow both because it earns interest and because the principal value gets bigger.
You can cash in your I bond after 12 months, but if you do so in less than 5 years, you'll lose the last 3 months of interest. For example, if you cash in the bond after 18 months, you'll get the first 15 months of interest.
Here are some key facts to keep in mind:
You can also use the Treasury's Savings Bond Calculator to find the value of your paper I bond.
Understanding I Bonds
Interest on I Bonds accrues monthly and compounds semiannually. This means you earn last month's interest on the first day of a new month, and every six months, the accrued interest is added to the bond's principal value.
The value you see on your TreasuryDirect account doesn't include the interest that's accrued but not yet added to the principal. You'll receive all accrued interest when you redeem the bond, but be aware of the three-month penalty if you redeem before the five-year mark.
For more insights, see: How Long Does It Take to Redeem Hh Bonds
How Interest Works
Interest on I Bonds accrues monthly, but the value you see on your TreasuryDirect account doesn't include the interest that's accrued but not yet added to the principal.
You'll earn last month's interest on the first day of a new month, while every six months, the accrued interest is added to the bond's principal value.
This means you'll receive all accrued interest when you redeem the bond, even if it hasn't yet been applied to the bond's balance.
Be mindful of the three-month penalty if you're redeeming before the five-year mark, as this can impact your overall return.
Weighing the Options
If you've owned an I bond for longer than a year but less than five years, consider whether it's worth redeeming the bond to reinvest in a higher-yielding investment.
The answer depends on your goals, when you bought the I bond, and the fixed rate for the bond. For example, if you bought an I bond in October 2022, your optimal redemption date was January 1, 2024, because the bond's fixed rate transitioned to a composite rate of 3.38%, which is well below what you can get from short-term Treasuries.
I bonds purchased from May 2020 through October 2022 have a fixed rate of 0.0%, making them targets for redemption. If the fixed rate is higher, however, it's best not to redeem the bond, as Enna advises.
The optimal redemption date for I bonds purchased in November 2022 through April 2023 depended on the inflation-adjusted rate announced on November 1, with the bonds' inflation rate now at 3.24%.
Time Limits
You'll want to be aware of the time limits that come with Series I bonds. These bonds cannot be cashed for the first 12 months you own them.
If you cash the bonds before you've owned them for five years, you'll pay a penalty of the last three months of interest. This penalty can be steep, especially if rates were higher when you bought the bond.
If rates fall, the penalty for cashing out your bond will also fall. So it may make sense to wait longer than you otherwise would to avoid the penalty.
At rates of 9.62 percent, the penalty was much steeper than at today's rates, so it may make sense to bail if you have a better option.
Here's a quick summary of the time limits to keep in mind:
- Series I bonds cannot be cashed for the first 12 months.
- Penalty of the last three months of interest if cashed before five years.
Redemption and Earnings
You can't redeem I Bonds until you've held them for at least 12 months, which is a one-year minimum holding period.
There are penalties for early redemption, but only if you redeem within the first five years. If you do, you'll forfeit the last three months of interest.
To maximize your interest earnings, consider redeeming on the first business day of the month.
What Happens When You Cash Out
You can cash out your I Bonds after a one-year minimum holding period, but be aware that there's a penalty for early redemption. This penalty is equivalent to the last three months' worth of interest.
Redeeming your I Bonds within the first five years will incur a penalty, but after that, you can cash out without any penalties. It's essential to keep track of your bond's issue date to determine if you're eligible for penalty-free redemption.
See what others are reading: How Long Does It Take to Cash in Bonds
The penalty for cashing in an I Bond before five years is calculated based on the last three months' worth of interest, which can vary depending on the bond's rate changes every six months. This means your penalty will be bigger if you withdraw during a high-rate period and smaller if you withdraw during a lower-rate period.
To maximize your interest earnings, consider redeeming your I Bonds on the first business day of the month, as this is when interest accrues for the previous month. This way, you won't miss out on a full month of interest and avoid penalties for redeeming at month's end.
Here's a summary of the key dates to keep in mind:
Recent Earnings
I bonds issued between Nov. 1, 2021 and Apr. 30, 2023 have paid three different starting rates, each offered for six months from the date of issue.
These record rates were 7.12% APY for the first six months for issue dates of Nov. 1, 2021 - Apr. 30, 2022, 9.62% APY for issue dates of May 1 - Oct. 31, 2022, and 6.89% APY for issue dates of Nov. 1, 2022 - Apr. 30, 2023.

The interest rates for I bonds change every six months, and the rates are based on inflation. If you bought an I bond during the specified time period, you can expect to earn the following rates:
Keep in mind that inflation has eased significantly since June 2022, and I bond rates have dropped accordingly.
Frequently Asked Questions
What is the best time to cash out an I bond?
Redeem I bonds on the first business day of the month to maximize interest earnings and avoid penalties. This timing allows you to capture accrued interest from the previous month
How long do I have to hold an I bond before I can sell it?
You can sell an I bond after it has been held for at least 1 year. Holding it longer can earn you more interest, up to 30 years.
Sources
- https://www.treasurydirect.gov/savings-bonds/i-bonds/
- https://www.bankrate.com/investing/time-to-sell-series-i-bonds/
- https://www.coldstream.com/insights/should-you-redeem-your-series-i-bonds-heres-what-to-consider/
- https://www.kiplinger.com/personal-finance/savings-bonds/is-it-a-good-time-to-cash-in-i-bonds
- https://www.investopedia.com/want-to-cash-in-your-i-bonds-heres-the-best-time-7969282
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