The process of Kaparot sweetens and cleanses judgments from us.
The Kaparot process can be done anytime between Rosh Hashanah and Yom Kippur before the fast begins. Read detailed explanation in the attached PDF.
In the writing of the Ari, Rabbi Chaim Vital describes how his teacher, the Holy Ari, was doing the Kaparot with chicken before Yom Kippur.
Many people follow this process. I myself decided to do the Kaparot with money because of two main reasons. I do not know a trusted Shochet that will do the meditation of the Ari. The one that does it in the morning slaughtering may have hundreds of chickens and may not check his knife frequently enough for flaws in the blade that would make the slaughter non-Kosher. It may bring judgements on the chicken’s soul and make it non-kosher. Whoever eats the chicken later may eat a non-kosher meat and that affects the soul negatively. The improper slaughtering turns the act to have the aspect of cruelty to animals and the outcome of the Kaparot may not be as intended or desired.
Bottom line is that if you are not sure about the Kosher slaughtering then it’s better to do the Kaparot with money as described below.
The process of Kaparot with money is done in a similar way, replacing the live chicken with money. We use $10 US per person. If you live in a country outside the US then check the value of a whole chicken or half a shekel as described here: http://dailyzohar.com/?p=16490
The Half-a-Shekel is a precept from the Torah. It is used to atone (Kapara) for the soul of the Israelites.
The Kaparot process is done any time between Rosh Hashanah and Yom Kippur, preferably early morning on the day before Yom Kippur.
Give Tzedaka/Kaparot here: