What is Filing Status?
Your filing status sets your tax brackets, your standard deduction, and your eligibility for various credits. Picking the right one matters.
How it works
The five options are single, married filing jointly, married filing separately, head of household, and qualifying surviving spouse. Your marital situation on December 31 generally controls which you use, and joint filing usually — but not always — beats filing separately.
A quick example
What people get wrong
If you're married, run the numbers both ways once. Filing jointly wins for most couples, but separate filing occasionally helps — for example, when one spouse has large medical bills measured against a lower income.