For paper bonds you must sell the whole bond. But once converted to electronic, can you redeem any amount in $25 increments like any electronic savings bond
Answers

1. There is no requirement that electronic savings bonds be redeemed "in $25 increments".
2. The minimum redemption amount is $25.00.
3. If you make a partial redemption, you must leave at least $25.00 in the partially redeemed bond.
The above points apply to electronic savings bonds, whether they were originally purchased in electronic form or were converted from paper.





this is the link to that discussion:
https://www.bogleheads.org/forum/viewtopic.php?t=410721
I'm relatively new to I Bonds and I have both electronic and paper. I'm not sure of my long term I Bond strategy yet, so indecision and procrastination play a major role in not converting the paper
bonds.


As to those paper savings bonds where the bondholder does not report the interest on an annual basis: The interest is taxable no later than the year of maturity, whether or not the bondholder redeems the bond in the year of maturity.
From IRS Publication 550 ("Investment Income and Expenses"):
Reporting options for cash method taxpayers. If you use the cash method of
reporting income, you can report the interest on Series EE, Series E, and Series I bonds in either of the following ways.
1. Method 1. Postpone reporting the interest until the earlier of the year you cash or dispose of the bonds or the year in which they mature.
[Method 2 is annual reporting of bond interest.]
(bold in original; italics added)
p. 7 of PDF at https://www.irs.gov/pub/irs-pdf/p550.pdf

