Terms of Use

The calculators on IBondLab perform standard I-bond arithmetic. They are for information and education only and are not financial, tax or investment advice.

Results use a flat purchase-year composite rate as an approximation and ignore the semiannual rate resets, secondary-market effects and a specific bond’s terms. Before making any decision, consult a qualified professional and read the actual TreasuryDirect terms.

We are not liable for any action taken based on these tools.