Dear Scruffy
I have a similar question
I bought a 20 year, $20,000 US treasury STRIP Zero coupon bond for $6199 in 1998 which matured in 2018.
My 2018 1099-B shows proceeds of $20K but no other information about cost basis etc.
I have paid the taxes on the OID reported interest on this each year.
Given that, can I just make the cost basis equal to the proceeds (i.e. $20K) when I fill out form 8949 in my tax return since I should not really owe any additional taxes?
Thanks much
