@DawnC Thank you for the suggestion!
I am wondering all the time why IRS invented this new 8949 form but literally we have 1099-B that has all the same information.
I agree with you and I really wish we can do it that way. However, I asked Gemini and chat-GPT, both says if condition satisfied, we can use schedule-D only for tax return; if 8949 is needed in your case, you have to submit 8949 and can not just submit 1099-B to IRS.
Since I've entered all my information into 8949 already, I'll mail in 8949 this time. Next year, I'll revisit this post and see if people can confirm that 1099-B is indeed sufficient to be submitted with form 8453.
