US Treasury EE Bond Formula:
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The US Treasury EE Bond Calculator calculates the current value of Series EE savings bonds based on the purchase amount, annual interest rate, and years held. EE bonds are low-risk savings instruments issued by the US government.
The calculator uses the EE bond compound interest formula:
Where:
Explanation: The formula accounts for semi-annual compounding, where interest is calculated twice per year and added to the principal.
Details: Accurate bond valuation helps investors track their savings growth, plan for future expenses, and make informed decisions about holding or redeeming bonds.
Tips: Enter the original purchase amount in USD, the annual interest rate as a decimal (e.g., 0.025 for 2.5%), and the number of years held. All values must be valid (purchase amount > 0, rate ≥ 0, years ≥ 0).
Q1: What are EE bonds?
A: EE bonds are US government savings bonds that earn interest for up to 30 years. They are guaranteed to double in value if held for 20 years.
Q2: How often does interest compound on EE bonds?
A: Interest compounds semiannually (twice per year), which is reflected in the formula's exponent of 2×y.
Q3: What is the minimum holding period for EE bonds?
A: EE bonds must be held for at least one year. If redeemed before 5 years, you forfeit the last 3 months of interest.
Q4: Are EE bonds taxable?
A: Interest earned is subject to federal income tax but exempt from state and local taxes. Tax can be deferred until redemption.
Q5: Where can I purchase EE bonds?
A: EE bonds can be purchased electronically through TreasuryDirect.gov. Paper bonds are no longer sold at financial institutions.