I see you're saying you imported a large number of transactions, but the subtotal is wrong.
Yes, this can happen due to rounding errors that result from the way TurboTax does rounding.
To be off by $500,000 sounds pretty unlikely but what do I know.
I've never seen a coinbase csv file.
There must be something strange about the data in your csv file.
post a sample line for a couple of transactions.
also post the header line.
@noahliebs
