What are all possible filing statuses?

The possible filing statuses for federal income tax in the United States are:

1. Single - for individuals who are unmarried or legally separated.
2. Married Filing Jointly - for married couples who choose to combine their income and deductions on one return.
3. Married Filing Separately - for married couples who choose to file their taxes separately.
4. Head of Household - for unmarried individuals who maintain a household for a qualifying dependent.
5. Qualifying Widow(er) with Dependent Child - for individuals whose spouse has died within the last two years and who have a dependent child.