US I Bonds Jump to 5.51% From November 1, With Highest Fixed Rate Since 2006
US Series I savings bonds bought from November 1, 2026 through April 30, 2027 will earn 5.51% for their first six months, up from 4.26% for bonds bought in the previous six months. The jump is led by the fixed rate, which rises to 1.40%, its highest since November 2006.
What happened
The US Treasury announced the new rates on October 30, 2026, as reported by USA Today and the Detroit Free Press. The new composite rate of 5.51% has two parts. The fixed rate of 1.40% stays with a new bond for its full 30 year life. The inflation part is 4.08% on an annual basis, based on a semiannual inflation rate of 2.04% from April to September 2026, measured by the Consumer Price Index for All Urban Consumers.
That is the key detail to understand. You do not lock in 5.51% for 30 years. You lock in only the 1.40% fixed part. The inflation part resets every six months, so the total rate after the first six months will move with inflation.
The previous terms, for bonds bought from May through October 2026, were a 4.26% composite rate, made up of a 0.90% fixed rate and a 3.34% annual inflation rate. The new fixed rate is also the highest since November 2022 for the composite rate, but it remains well below the 9.62% rate seen in 2022, when inflation was at a 40 year high.
I Bonds are sold only electronically through TreasuryDirect, with a minimum purchase of 25 dollars and an electronic purchase limit of 10,000 dollars per person per calendar year. Existing bonds keep their original fixed rate, but all I Bonds will get the new 2.04% semiannual inflation rate for six months at their next reset, depending on when they were bought.
Why it matters for beginners
An I Bond is a savings product backed by the US government, designed to protect money against inflation. That makes it different from a regular savings account, where the rate can change at any time, and different from a stock, where the value can fall.
For beginners, the lesson is in the two parts of the rate. The fixed part rewards patience, because it stays for the life of the bond. The inflation part does the job of keeping up with rising prices, but it can also fall if inflation cools. A rate that looks high today can therefore look ordinary in a year, and that is normal for this product.
It also helps to compare like with like. USA Today noted the new 5.51% rate tops current T-bill rates and many top certificate of deposit and high yield savings rates, but those comparisons change as rates move. If you want a simple way to think about interest rates in general, see our explainer on what APY means and how it differs from an interest rate: https://investclaritypath.com/what-is-apy-and-why-is-it-different-from-interest-rate/
Two limits matter before anyone gets excited. Money in an I Bond cannot be redeemed in the first 12 months, and bonds redeemed before five years lose three months of interest. Those rules make I Bonds a poor fit for money you may need soon.
What to watch next
The next I Bond rate reset is due on May 1, 2027. At that point, both the fixed rate for new bonds and the inflation rate for all bonds will be set again from the inflation data gathered by then. Watch the inflation data and the Treasury announcement together, because the fixed rate decision is the part that matters most for new buyers.
Also watch the calendar year purchase limit. The 10,000 dollar electronic limit resets on January 1, so someone who already used the 2026 limit would need to wait until January to buy more, but would still be inside the November to April window for the new 5.51% first six month rate.
FAQ
Is the 5.51% rate guaranteed for 30 years?
No. Only the 1.40% fixed rate is fixed for the life of the bond. The inflation part resets every six months, so the total rate changes over time.
Do existing I Bonds get the new 5.51% rate?
No, not as a whole. Existing bonds keep their original fixed rate. They do get the new 2.04% semiannual inflation rate for six months at their next reset, so their total rate rises, but by a different amount depending on their fixed rate.
When can I sell an I Bond?
You cannot redeem an I Bond in the first 12 months. If you redeem before five years, you lose the last three months of interest as a penalty.
Where are I Bonds sold?
Only electronically through TreasuryDirect. The minimum electronic purchase is 25 dollars, and the electronic limit is 10,000 dollars per person per calendar year.
Sources
USA Today – “I bonds are back with a huge new 5.51% return”, October 30, 2026.
This article is for general information and education only. It is not legal or financial advice.
