@Tax2019Pay unless you switch brokers or are using a non-US broker, the broker, if it recognizes that a wash sale has occurred, will usually make adjustments to the cost basis of the "replacement" securities for the disallowed wash sale loss.
a way to check is to look at the trade confirmation for the "replacement" security and compare the cost on it to what the broker is reporting on the 1099-B as the cost.
however, in certain situations, the wash sale may not be recognized by the broker and you're on your own.
such situations would occur if an IRA is used to purchase "replacement securities" or if you have multiple security accounts even if they're with the same broker. there could also be other situations where the broker does not recognize the wash sale but you still have to,
