How do I calculate my savings bond value?

Enter bond type (Series EE or I), face value ($50-$10,000), issue date, and current date. Our calculator computes current value including all accrued interest using Treasury formulas.

What is the current interest rate on I bonds?

I bond rates change every May and November. Composite rate = fixed rate + inflation rate. Current I bonds pay competitive inflation-protected returns (updated regularly).

How long does it take for EE bonds to double?

Series EE bonds issued after May 2005 are guaranteed to double in value if held for 20 years (3.5% annualized). Before 20 years, they earn a fixed rate.

When do savings bonds stop earning interest?

EE and I bonds earn interest for 30 years from issue date. After 30 years, they stop earning and should be redeemed.

Are savings bonds taxable?

Interest is subject to federal income tax but exempt from state and local taxes. Tax can be deferred until redemption or reported annually.

Savings Bond Calculator – Series EE & I Bond Value Tool

Calculate the current value and future worth of your US savings bonds. Whether you have Series EE bonds, Series I bonds (inflation-protected), or paper savings bonds, our calculator estimates accrued interest, total value, and redemption amount using Treasury formulas.

🏷️ Bond Series

💰 Face Value (Denomination)

📅 Issue Date (Month/Year)

📅 Current/Redemption Date

📈 EE Bond Fixed Rate (%)

EE bonds issued after May 2005: 0.10% fixed

💰 Purchase Price ($)

Savings Bond Calculator: How to Value Your EE & I Bonds

US savings bonds are one of the safest investments, backed by the full faith of the US government. But calculating their current value can be confusing due to changing interest rates, compounding periods, and different rules for Series EE vs Series I bonds. Our savings bond calculator does the math for you — enter your bond series, face value, issue date, and current date to see exactly what your bond is worth today, including all accrued interest.

📐 Savings Bond Value Formula:
Current Value = Face Value × (1 + Interest Rate/2)^(2 × Years)
EE bonds issued after May 2005: Guaranteed to double after 20 years (3.53% annualized)
I bonds: Composite Rate = Fixed Rate + (2 × Semiannual Inflation Rate) + (Fixed Rate × Semiannual Inflation Rate)

Series EE Bonds: Fixed Rate with 20-Year Doubling Guarantee

Series EE savings bonds issued after May 2005 earn a fixed interest rate for the life of the bond (30 years). The key feature: EE bonds are guaranteed to double in value if held for 20 years. This guarantee ensures a minimum annualized return of approximately 3.53% over the 20-year period. If the bond's fixed rate is lower, the Treasury adds an adjustment at the 20-year mark to make up the difference. Our calculator applies this doubling guarantee automatically.

Series I Bonds: Inflation-Protected Savings

Series I bonds (I bonds) offer protection against inflation. Their composite rate consists of a fixed rate (set at purchase, remains constant for 30 years) plus an inflation rate (adjusted every 6 months based on CPI-U). I bonds are ideal for preserving purchasing power. Current I bond composite rates are competitive, often exceeding 4-6% during high inflation periods. Our calculator estimates I bond values based on the fixed rate you entered and current inflation assumptions.

Key Rules for Savings Bond Redemption

Rule	EE Bonds	I Bonds
Minimum holding period	1 year (cannot redeem before)	1 year
Early redemption penalty (years 1-5)	3 months interest	3 months interest
No penalty after	5 years	5 years
Interest earning period	30 years	30 years
20-year doubling guarantee	Yes (after May 2005)	No

How to Use This Savings Bond Calculator

Step 1: Select your bond series — Series EE (fixed rate) or Series I (inflation-protected).
Step 2: Choose the bond's face value (denomination) from $50 to $10,000.
Step 3: Enter the issue date (month/year when bond was purchased).
Step 4: Enter the current date or planned redemption date.
Step 5: For EE bonds, enter the fixed rate (check TreasuryDirect for your bond's rate). For I bonds, enter fixed rate and current inflation rate.
Step 6: Click "Calculate Bond Value" to see current worth, interest earned, and holding period.

Current Savings Bond Rates (2026)

Bond Type	Fixed Rate	Inflation Component	Composite Rate
Series EE (May 2005+))	0.10% - 0.20%	N/A	0.10% - 0.20% (doubling guarantee applies)
Series I (current issue)	1.20%	1.48% (semiannual)	~4.18%

*Rates change every May and November. Check TreasuryDirect for latest rates.

EE Bond Doubling Guarantee Explained

The Treasury guarantees that Series EE bonds issued after May 2005 will be worth at least twice their purchase price at 20 years from issue. For example, a $100 EE bond purchased for $100 will be worth at least $200 after exactly 20 years. If the bond's fixed rate (e.g., 0.10%) would produce less than $200, the Treasury adds an adjustment at the 20-year mark to reach the guarantee. This effective 3.53% annualized return makes EE bonds attractive for long-term holders.

Tax Considerations for Savings Bonds

Federal Tax: Interest is subject to federal income tax, but you can defer until redemption or final maturity (30 years).
State & Local Tax: Savings bond interest is EXEMPT from state and local income taxes — a significant advantage.
Education Tax Exclusion: If you use bond proceeds for qualified higher education expenses, interest may be tax-free (income limits apply).
Reporting Options: Choose between cash method (report interest at redemption) or accrual method (report annually).

When to Redeem Your Savings Bonds

After 1 year — but penalty applies (3 months interest) if redeemed within 5 years.
After 5 years — no penalty, full interest earned.
At 20 years (EE bonds) — guaranteed doubling achieved, but bonds continue earning for 10 more years.
At 30 years — bonds stop earning interest. Redeem immediately to avoid lost earnings.
When interest rates rise — consider redeeming low-rate EE bonds to reinvest at higher yields.

How to Find Your Bond's Interest Rate

EE Bonds issued 1980-1995: Market-based variable rates (use Treasury's savings bond calculator).
EE Bonds issued 1995-2005: Variable rates reset every 6 months.
EE Bonds issued after May 2005: Fixed rate for 30 years (0.10-0.20% currently).
I Bonds: Fixed rate at purchase + semiannual inflation adjustments. Check TreasuryDirect for historical rates.

Frequently Asked Questions About Savings Bond Calculator

Q: How accurate is this savings bond calculator?
A: Very accurate for EE bonds post-2005 and I bonds with known rates. For older bonds (pre-1995), rates varied significantly — use TreasuryDirect's official calculator.

Q: Can I redeem savings bonds before maturity?
A: Yes, after 1 year. If redeemed before 5 years, you lose the last 3 months of interest. After 5 years, no penalty.

Q: How do I redeem paper savings bonds?
A: Mail to Treasury Retail Securities Site or convert to electronic bonds via TreasuryDirect. Many banks no longer redeem paper bonds.

Q: What happens to savings bonds after 30 years?
A: They stop earning interest. Redeem them immediately to avoid losing potential earnings. The Treasury sends notices but it's your responsibility.

Q: Are EE bonds or I bonds better for my portfolio?
A: I bonds are better for inflation protection and shorter holding periods (1-5 years). EE bonds are better for guaranteed 20-year doubling. Many investors use both.

Q: How do I check my savings bond value online?
A: Use TreasuryDirect's Savings Bond Calculator or our tool above. You'll need issue date, denomination, and bond series.

Q: Can I lose money on savings bonds?
A: No. Savings bonds are backed by the US government. You cannot lose principal. Interest rates may be low, but your original investment is always safe.

Use our savings bond calculator to track your EE and I bond investments, plan redemptions, and optimize your fixed-income portfolio. Free, accurate, and updated with Treasury guidelines.