I have three rudimentary questions, that I'm struggling with.

1) https://www.treasurydirect.gov/indiv/re ... dterms.htm

mentions that the I-bonds are currently giving a rate of return of 2.58%. It is also written that The interest is compounded semiannually.

Does that mean, the

*actual*rate of return is 2.6 ?

2) "

*If you redeem an I bond before it is five years old, you will lose the last three months of interest.*"

I wanted to know, how much I will loose in dollar amount, if I sell the bonds before 5 years ? I have looked for monthly return calculators online, but haven't been able to find one (the one that gives per-month amount). Can someone help me calculate this ?

3) If I redeem only a portion of the bond’s value, how can I calculate the amount (in dollars) that I will have to forfeit. For e.g. I buy I-bond for $5000. Assuming rates remain the same, say 2.58%, if I sell $3000 worth of bonds, how much of interest will I loose ? In dollar amount ?

(is it like 3000/5000 60% of the last 3 months interest will be lost ?)

Apologies if these are quite basic questions. Any help is greatly appreciated !

Regards.