My spouse and I have a teenage daughter who has a part-time job. Do we count her income as part of our household income when we apply for Marketplace subsidies?

The answer depends on whether she earned enough income to be required to file a federal income tax return on her own. Generally, kids who qualify as tax dependents aren’t required to file a federal income tax return or pay taxes on their income if they earned less than a threshold amount ($12,000 in 2018.) If your daughter earned less than that, you would not count her income as part of your household income.