For the record, other tax software does this type of rounding too. Unless you have really small lots, it shouldn't make a big difference, and I wouldn't worry a

For the record, other tax software does this type of rounding too. Unless you have really small lots, it shouldn't make a big difference, and I wouldn't worry about it. If you do have small lots, you can consider doing the summary method using Exception 1 (if eligible) or Exception 2 otherwise. https://www.irs.gov/instructions/i8949#idm140393400814208 https://www.irs.gov/instructions/i8949#idm140393400814208 Note that Exception 2 requires an attached statement (generally, your copy of the 1099-B). From what I've heard, some tax software supports PDF attachments, but others, like TurboTax, make you print and mail.