다음은 Refundable credits 즉 납부할 세금이 없어도 환불된다는 뜻입니다.
Refundable tax credits available to individual taxpayers include:
1. Earned income credit,
2. Adoption tax credit for the years 2010 and 2011 only,
3. Portion of the child tax credit,
4. portion of the American opportunity credit for college expenses,
5. First Home buyer credit,
6. Making work pay credit,
7. credit for excess Social Security withholding, and the health coverage credit.
글 주신 내용으로는 전체를 파악할수없어 답변을 드릴수가 없습니다.