yes, amend the return. assuming your parents CAN'T claim you. whether they did or not isn't the question.
worst case scenario on the stimulus payment,
- The stimulus payments are really based on your 2020 tax return (income, dependents, etc).
- The IRS is using either 2018 or 2019 – whatever is available - to ESTIMATE that payment
- When you file next year there will be a “settle up” section on the tax return.
- If you are due more stimulus (and this would include where you simply never received it), you will receive it through the 2020 tax filing.
- If you received too much, by law, you are not required to return it
