@Rick19744
The wash sale rules under Section 1091 can be a little complicated and the basis of the new securities could be adjusted:
a) if the sales price was less than the repurchase price, then the basis of the new securities is deemed to be the basis of the securities sold plus the difference between the repurchase and the sale prices.
b) if the sales price was more than the repurchase price, then the basis of the new securities is considered to be the basis of the securities sold minus the difference between the sale and the repurchase prices.
do some examples for yourself but the basis of the new securities is simply their cost plus the disallowed wash sale amount.
