@amanmarwah
"when I would take a wash sale loss disallowed it would not be added to the cost basis the next time I bought the stock like 40 days later,"
You don't see it because It doesn't work that way.
First, 40 days later is outside the wash sale +/- thirty day window.
Second, it is the triggering BUY that gets its cost basis adjusted, when a wash sale loss is disallowed.
a triggering BUY would have occurred +/- thirty days around your SELL order.
The broker is required to track all this for you, so there is nothing for you to do.
