If one spouse uses “married filing separately” as the filing status, the other spouse must also use this filing status. The other spouse must file if his/her gross income is more than a set amount. For 2017 returns, this amount is $4,050.
An unincorporated business or income-producing entity organized by two or more persons. A partnership is not subject to tax but passes through to the partners all income, deductions, and credits, according to the terms of the partnership agreement.