Do I have to pay multiple fees for my sibling and her family when sponsoring her to come to the US?

The payment of fees depends upon stages of the case. For the I-130 petition, you only have to pay one fee of $535 to the Department of Homeland Security. When the I-130 petition is approved, and when it is time to submit the immigrant visa application to the National Visa Center, you or your sister would have to pay multiple fees for each member of the family that is eligible to immigrate. Due to the limitations of the Lawyers.com Forums, Alan Lee, Esq.'s (the "Firm") participation in responding to questions posted herein does not constitute legal advice, nor legal representation of the person or entity posting a question. No Attorney/Client relationship is or shall be construed to be created hereby. The information provided herein by the Firm is general, and requires that the poster obtain specific legal advice from an attorney. The poster shall not rely upon the information provided herein as legal advice nor as the basis for making any decisions of legal consequence.