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iBonds:  Current Series-I Bond rates
Series I Savings Bonds
Current iBond Rate = 1.64%
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Series I BondsNovember 2, 2015 Announcement:  The Bureau of the Public Debt today announced1 earnings rates for Series I Savings Bonds and Series EE Savings Bonds, issued from November 2, 2015 through April 30, 2016.

I bond fixed rates are determined each May 1 and November 1. Each fixed rate applies to all I-bonds issued in the six months following the rate determination.

The earnings rate for Series I Savings Bonds is a combination of a fixed rate, which applies for the life of the bond, and the semiannual inflation rate.

The earnings rate combines a 0.10% fixed rate of return with the 1.54% annualized rate of inflation as measured by the Consumer Price Index for all Urban Consumers (CPI-U). The CPI-U increased from 236.119 in March 2015 to 237.945 in September 2015, a six-month change of +0.77%.

When the inflation rate is less than zero, the earnings rate will be less than the fixed rate but never less than zero.

  • Fixed rate  = 0.10%
  • 6 month Inflation rate = +0.77%
  • Composite rate =[fixed rate + (2 x inflation rate) + (fixed rate x inflation rate)]
  • [0.0010 + (2 x 0.0077) + (0.0010 x 0.0077)]= [0.0010 + 0.0154 + 0.0000077)] =  0.0164077 
  • 0.0164077 x 100% = +1.64%
==> Thus, the current I Bond Composite Earnings Rate is 1.64% with a fixed rate of 0.10%

==> Composite Rates for Older Series I Bonds

==> Top CD and Savings Account Rates: (Select your amount and account type to find the best rates) <==

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==> NEVER lose money with I BondsThe combined rate will never be less than 0. However, the combined rate can be lower than the fixed rate. If the inflation rate is negative (because we have deflation, not inflation), 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 6-month combined rate stops at 0.00%.
More about Series I Bonds:
More about Series I Bonds:

When the inflation rate is less than zero, a bond's earnings rate is less than its fixed rate (but the earnings rate is never less than zero).
The fixed rate applies for the 30-year life of I bonds purchased during this six-month period.

Earnings rates for I bonds are set each May 1 and November 1. Interest accrues monthly and compounds semiannually. Bonds held less than five years are subject to a three-month interest penalty. I Bonds have an interest-bearing life of 30 years.

For older i-bonds and what they will pay, see:  I Bond Composite Rates (iBonds)

Note 1: TreasuryDirect Press Releases at

Minimum purchase:
  • $25 for a $25 I bond when purchased electronically via TreasuryDirect
Maximum purchase(per calendar year):
  • $10,000 total per social security number
  • Electronic bonds via TreasuryDirect: purchase to the penny from $25 to $10,000. For example, with electronic bonds, you could buy an I Bond for $50.23.
How do I buy an I Bond?   Electronic: Through your TreasuryDirect account > Products in Depth > I Savings Bonds

For more conservative investors who have no interest in individual stocks, I co-edit "The Retirement Advisor"  where our most aggressive model portfolio is slightly less aggressive then the "core conservative portfolio" in Kirk Lindstrom's Investment Letter."   For more explanation, see "Kirk's Two Investment Letters - Which is Best for You?"  

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