Answered in your other thread
https://ttlc.intuit.com/community/tax-credits-deductions/discussion/reconcile-aptc/01/3413683#M32831...
You do not need to stress that you will be subject to criminal charges for underestimating your income for the premium tax credit. You might need to stress over the additional amount you might owe at tax time when they recalculate your premium credit. People are very confused by marketplace insurance, so mistakes like yours are common.
From Healthcare.gov:
If you're enrolled in a Marketplace plan and your income or household changes, update your application as soon as possible.
These changes — like higher or lower income, adding or losing household members, or getting offers of other health coverage — may affect the coverage or savings you’re eligible for. After you finish applying or enrolling, you may be asked to submit documents to confirm your income.
Discover which changes to report.
Learn how to report changes.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**