I have a few wash sale transactions in 2014.

At the year end, I hold no position and I'm in the US.

Question is when can I add loss from wash sale back to cost (box e)?

Jan 2015: No short sale nor PUT buying.

1 Answer 1


When you sell your next position, assuming it is not a wash.

The fact that you have no positions at the end of the year is meaningless. Wash sale rules talk about repurchasing same or similar asset within 30 days before or after the sale at loss. It doesn't matter if you sell on December 31st and buy back on January 1st.

  • say I have no transaction on Jan 2015 too. Can I adjust my cost to correspond trades?
    – TLJ
    Apr 11, 2015 at 19:42
  • +1 for the fact that wash does not end on 12/31. A point many miss. Apr 11, 2015 at 20:59
  • @TLJ then how is it a wash sale?
    – littleadv
    Apr 11, 2015 at 21:08
  • @littleadv because I see mark as W on 1099B from my broker. Long story short, I was trying to do day trading. So there are win and lost transactions interleaving during dec 2014. I did bought some on Jan 2015, but the number of shares is far less that what were marked as wash in Dec 2014
    – TLJ
    Apr 11, 2015 at 22:50
  • @TLJ so when you sell those you bought in Jan 2015 you can add the disallowed loss as adjustment to basis.
    – littleadv
    Apr 12, 2015 at 0:56

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