No, you will not need to repay the Advance Premium Tax Credit ("subsidy") that you received.
If you honestly submitted your estimated income and the Marketplace gave you Advance credit (they accepted your estimated income), you will not need to repay the credit. In fact, if the credit had not already paid for your entire insurance premium, you would have received additional credit on your tax return.
For any future readers, a key word is "honestly" submitted your estimated income. The law says that if a person were to intentionally lie on their health insurance application (such as falsely increasing income to receive the credit), the penalty is $250,000.
