Unless you’re at 400% of the federal official poverty level, no obligation to repay federal health care subsidies is incurred.
You still get to keep your Obamacare subsidies if you were eligible for the silver plan.
I don't think that is accurate. Subsidies and deductibles are on sliding scale between 139% and 400% fpl. Lets say a person starts out the open enrollment period at 200% fpl. Then for whatever reason that person ends up the year at 375% fpl. They will have to return some of those subsidizes. People on the exchanges are suppose to report qualifying events, but how does one factor something like overtime in?