I Bond Rates Reset November 1: Should You Buy Now or Wait for the New Fixed Rate?
The current I bond pays 4.26% with a 0.90% fixed rate. Forecasters expect a higher fixed rate on November 1, which is the number you keep for the life of the bond.
In this guide 9 sections
I bonds bought through October 31, 2026 pay a 4.26% composite rate with a 0.90% fixed rate. Treasury resets both on November 1, and forecaster David Enna of Tipswatch expects a fixed rate near 1.30% and a composite near 4.90%. If you have not hit the $10,000 limit, waiting a few days costs little.
Twice a year, the Treasury changes what an I bond pays, and one of those days is a week away. The part that matters most is the fixed rate, because it never changes for the life of the bond. A bond bought at 0.90% keeps 0.90% for up to 30 years.
This guide is for savers deciding whether to buy I bonds this week or wait for the November 1 announcement. It explains how the rate is built, shows the current numbers and the forecast, and gives a simple decision method. Our guide to the Fed's rate move covers where else to park cash. Coinpurse covers everyday saving tools, and I bonds are a useful but often misunderstood one.
How is the I bond rate set?
An I bond rate has two parts. A fixed rate stays the same for the life of the bond. A variable inflation rate resets every six months. TreasuryDirect explains that the composite rate equals the fixed rate, plus twice the semiannual inflation rate, plus a small cross term.
According to TreasuryDirect's I bond rates page, the fixed rate and the inflation rate are announced every May 1 and November 1. The inflation part is based on the non-seasonally adjusted consumer price index for urban consumers, known as CPI-U.
Each bond's own rate changes every six months from the month you bought it. That means the rate you earn does not always match the latest announcement. The new fixed rate, though, depends only on when you buy.
The fixed rate is the part you can lock in. The inflation part is a moving target that adjusts to prices every six months, so the fixed rate is the piece that decides how a bond performs over a decade.
What do I bonds pay today and what is forecast for November 1?
The current composite rate is 4.26% for bonds issued May 1 through October 31, 2026. It combines a 0.90% fixed rate with a 3.34% annualized inflation rate. The table shows today's numbers beside one forecast.
| Measure | Now through October 31 | Forecast for November 1 |
|---|---|---|
| Fixed rate | 0.90% | About 1.30% most likely |
| Variable (inflation) rate, annualized | 3.34% | About 3.58% |
| Composite rate | 4.26% | About 4.90% |
The forecast comes from Tipswatch's September 20 analysis. The author calls 1.30% his most likely fixed rate. A rate of 1.40%, the highest since November 2006, is described as a long shot unless real yields stay at 2.50% or higher.
These are estimates, not announcements. Official numbers arrive on November 1. The forecast also pre-dates the September inflation report released on October 14, so check TreasuryDirect for the final figures.
Why is the fixed rate expected to rise?
The fixed rate follows market yields on Treasury inflation-protected securities, or TIPS. Over the past decade, Tipswatch says, the rate has tracked about 0.65 times the six-month average of the 5-year TIPS real yield. Treasury has not announced a formula, so that is an observed pattern, not a rule.
The 5-year real yield rose from 1.46% on January 1 to 2.55% at the close on September 18. The six-month average, which is what matters, was about 1.95%. Multiplying 1.95% by 0.65 gives about 1.27%, which rounds to 1.30%.
That math explains the forecast. A real yield that rises through the summer lifts the average, and the average sets the fixed rate. The author notes that even if yields fell back to 2.0% for the rest of the period, the projection would still be 1.30%.
The caveat is that Treasury could change its method. The forecast assumes it will not, and so far the pattern has held.
Should you buy before October 31 or wait?
For most savers who have not reached the limit, waiting is the better bet. The fixed rate you lock in for decades is likely to rise from 0.90% to about 1.30%, and the cost of waiting a few days is small.
Here is the arithmetic. On $10,000, a 4.26% composite rate pays about $213 over six months, and a 4.90% rate pays about $245. The difference of roughly $32 is the gain from the higher rate in the first period, before the rate resets again.
The bigger gain is the fixed rate. A bond with a 1.30% fixed rate beats a 0.90% fixed rate by 0.40 percentage points a year above inflation. On $10,000, that is about $40 a year in extra real return, for as long as you hold.
The case for buying now is thin. You get October's interest at 4.26%, but the new bond may earn more, and you keep the lower fixed rate. Tipswatch's author suggests holding off until after the November reset for buyers who have not reached the limit.
What are the limits and holding rules?
The purchase limit is $10,000 per person per year in electronic I bonds, according to Tipswatch's analysis. Couples can each buy up to the limit, and some people use other buying options.
I bonds have two holding rules worth knowing. You cannot redeem one in the first 12 months. If you redeem before five years, you forfeit the last three months of interest. After five years, there is no penalty.
That makes I bonds a poor home for money you may need soon. An emergency fund belongs in a savings account you can reach the same day. I bonds suit money you can leave alone for a year or more.
Interest is added to the bond and paid when you cash it. You owe federal income tax on it then, or you can choose to report it each year. State and local income taxes do not apply to I bond interest.
How do I bonds compare with TIPS and savings accounts?
I bonds are one choice among several. Tipswatch's September analysis argues that TIPS are currently the better value, since the 5-year real yield is 2.55% against a 0.90% fixed rate on I bonds. The author's "fair value" fixed rate at that yield would be about 1.70%.
I bonds still have advantages that TIPS lack. Interest is tax-deferred, deflation protection is better, and you control when to redeem after the first year.
Compare with cash too. A high-yield savings account pays a variable rate that can fall, while an I bond's inflation part adjusts to prices. Our money market fund guide looks at how cash alternatives stack up.
The table below summarizes the tradeoffs.
| Option | Access | Rate behavior |
|---|---|---|
| I bond | Locked 12 months, small penalty before 5 years | Fixed plus inflation, resets every six months |
| TIPS | Sell any time at market price | Real yield fixed at purchase |
| High-yield savings | Same day | Variable, can change at any time |
What should you know about the TreasuryDirect login change?
TreasuryDirect is moving to ID.me for login verification, with a hard launch on October 28, according to Tipswatch. That is right in the middle of the rate reset week.
Prepare ahead. If you plan to buy on or after November 1, set up your verification before then. A last-minute login problem can delay a purchase, and some people dislike having a private company handle the process.
Have your documents ready. You will likely need a photo ID and a phone that can take a clear picture. Allow time, since verification can take longer than a normal login.
If you do not already have a TreasuryDirect account, create one now. Opening an account takes a few days of verification, so starting early avoids missing the new rate window. The new fixed rate stays available through April 2027, so there is no need to rush.
How do you decide in five steps?
Use a short checklist to decide. It keeps the choice simple, and you can finish it in one sitting.
- Confirm you can leave the money alone for at least one year, ideally five.
- Check that you have a separate emergency fund in cash.
- Check how much of your $10,000 limit you have used this year.
- Set up or verify your TreasuryDirect login before November 1.
- Check the official rates on November 1, then decide how much to buy.
If the official fixed rate comes in at or above 1.30%, buying looks attractive for long-term savers. If it surprises on the low side, compare TIPS and savings accounts before you commit.
Do not buy more than you can leave alone. The return is good, but the main value of an I bond is steadiness, and early cash needs undo that. Consider also the wider plan for your cash, including goals such as saving for a child's future, which may suit different accounts.
Wait for the official November 1 numbers
I bonds pay 4.26% now with a 0.90% fixed rate. Forecasters expect a fixed rate near 1.30% and a composite near 4.90% on November 1, and the fixed rate is the part you keep. For most savers under the limit, waiting a few days is a low-cost choice.
This week, set up your TreasuryDirect login, confirm your emergency fund and decide how much you could leave alone for a year or more. Then check the official rates on November 1. Coinpurse will follow the announcement.
