If it's from a big load of individual stock transactions, it could be the result of Rounding being done in a different way.
i.e. If you didn't use rounding until the very end, but TTX used it for each transaction, that $4 difference could be the difference. (no, I'm not sure where & when TTX rounds)
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____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
