Yes. Some are accustomed even initially to already distribute the charity before Yom Tov, and then say in the Nussach “As I have given.”<a href="#_ftn1" name="_ftnref1">[1]</a>]
__________________________
<a href="#_ftnref1" name="_ftn1">[1]</a> Gesher Hachaim 31:2-3; Nitei Gavriel 79:29

Shulchan Aruch HaRav | May one distribute the charity for Yizkor already before Yom Tov?

Yes. Some are accustomed even initially to already distribute the charity before Yom Tov, and then say in the Nussach “As I have given.”[1]] __________________________ [1] Gesher Hachaim 31:2-3; Nitei Gavriel 79:29