The percentages that you should enter for your premium, your SLCSP, and your advance payment should be an amount that you and your parents agree on. Since your parents are filing separately, it could be 33 and 1/3 for each of you. Or since they paid the premiums, it could be 50% for each of them and 0% for you. Make sure you are in agreement and that the percentages on all tax returns add up to 100% together.
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