For individual/family plans, what is included in household income for subsidy determination? How do I know what to state for my income to determine subsidies?
Household income includes incomes of the taxpayer, spouse, and dependents. In determining eligibility for exchange subsidies, income will be based on your attestation of your expected income in 2015 and will be verified by the exchange with documentation from your most recent tax return, with consideration of reasonable changes you expect. Exchanges will calculate enrollees’ household incomes using Modified Adjusted Gross Income, or MAGI.  The MAGI calculation includes such income sources as wages, salary, foreign income, interest, dividends, and Social Security. MAGI calculation does not include income from gifts, inheritance and some other income sources are partially excluded. More information on MAGI is available here