Key facts about 2008 Series I bonds
- A $100 bond issued January 2008 is now worth 2.0 times its $100.00 purchase price.
- The issue month matters a lot this year: a $100 bond from January is worth $204.52, but one from October only $161.64 (21% less), because bonds issued in different months earn under different interest terms.
- Over the past 12 months a $100 January 2008 bond grew from $195.96 to $204.52 (+$8.56, 4.4%).
- It keeps earning for about 11 more years, until Jan 2038.
- Fixed rate (set at purchase, never changes): Jan–Apr 2008: 1.20%; May–Oct 2008: 0.00%; Nov–Dec 2008: 0.70%.
- Composite rate in the 6-month period starting May 2026 (by issue month): Jan–Apr: 4.56%; May–Oct: 3.34%; Nov–Dec: 4.05%.
Value by issue month
| Issue month | $50 bond | $100 bond | $500 bond | $1,000 bond | Status | Final maturity |
|---|---|---|---|---|---|---|
| January 2008 | $102.26 | $204.52 | $1,022.60 | $2,045.20 | Earning | Jan 2038 |
| February 2008 | $101.88 | $203.76 | $1,018.80 | $2,037.60 | Earning | Feb 2038 |
| March 2008 | $101.50 | $203.00 | $1,015.00 | $2,030.00 | Earning | Mar 2038 |
| April 2008 | $101.12 | $202.24 | $1,011.20 | $2,022.40 | Earning | Apr 2038 |
| May 2008 | $81.94 | $163.88 | $819.40 | $1,638.80 | Earning | May 2038 |
| June 2008 | $81.72 | $163.44 | $817.20 | $1,634.40 | Earning | Jun 2038 |
| July 2008 | $81.50 | $163.00 | $815.00 | $1,630.00 | Earning | Jul 2038 |
| August 2008 | $81.26 | $162.52 | $812.60 | $1,625.20 | Earning | Aug 2038 |
| September 2008 | $81.04 | $162.08 | $810.40 | $1,620.80 | Earning | Sep 2038 |
| October 2008 | $80.82 | $161.64 | $808.20 | $1,616.40 | Earning | Oct 2038 |
| November 2008 | $90.02 | $180.04 | $900.20 | $1,800.40 | Earning | Nov 2038 |
| December 2008 | $89.72 | $179.44 | $897.20 | $1,794.40 | Earning | Dec 2038 |
Values as of October 2026. Other face values are proportional: a $200 bond is worth twice the $100 value. Click a month to open it in the calculator.
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Questions about 2008 Series I bonds
How much is a $100 Series I bond from 2008 worth?
As of October 2026, a $100 Series I bond issued in 2008 is worth $161.64 to $204.52, depending on the month it was issued. It cost $100.00 new.
Why are some 2008 Series I bonds worth more than others?
Bonds issued in different months of 2008 earn under different interest terms. As of October 2026 a $100 bond from January is worth $204.52 versus $161.64 for October. Always check the exact issue month on your bond.
What interest rate do 2008 I bonds earn?
Each I bond keeps the fixed rate it was issued with (Jan–Apr 2008: 1.20%; May–Oct 2008: 0.00%; Nov–Dec 2008: 0.70%) plus the current inflation rate, which resets every six months. Source: U.S. Treasury Fiscal Data.
Do 2008 Series I bonds still earn interest?
Yes. They earn interest for 30 years from the issue date.
Is the value before tax?
Yes. Savings bond interest is subject to federal income tax but not state or local income tax.
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