Deductions & credits

@MayaD @DoninGA @VolvoGirl   Thank you all for your help. Follow up question, sorry I forgot to ask. I see on the w4 it states multiplying the number of qualifying children under age 17 by $2000, and multiplying the number of other dependents by $500. Will both of my children (oldest will be 18 in 2025, youngest will only be 16) be claimed under the $2000 line for a total of $4000, or will the oldest fall under the $500 credit? Thank you for your help. I really appreciate it.