I don't do much tax work in inherited stocks, so I am treading lightly to get it right. While alive, husband and wife each had their investments in separate revocable trusts. Husband died in CY 2023. Wife is beneficiary of the investment account. I assume there was a valuation at date of death. At death, the trust became irrevocable, had trust tax returns prepared (not by me) for CY 2023 and part year CY 2024, when account was closed and all stocks transferred to wife. As these stocks are sold, is the basis FMV at date of death, or FMV at date of physical transfer to the wife?