How do i carry forward my wash sale from 2017 to 2018

[momidwest]

how do i carry forward a wash sale from 2017 to 2018?

[DDollar · Accepted solution]

You do so by adjusting the cost basis of the security you repurchased that caused the wash sale.  The loss you could not take reduces the cost basis for the security.  You may  be able to do it yourself if you have an on-line account, or you may need to ask your broker to do so.  They may have already done so.