Why Filing Status Matters
Your filing status determines two important things: (1) your standard deduction amount and (2) where your tax bracket thresholds fall. Choosing the right status can save hundreds or thousands of dollars.
The Three Most Common Statuses
Single
You're unmarried (or legally separated/divorced) on December 31 and don't qualify for Head of Household. Standard deduction: $15,000 (2025).
Married Filing Jointly (MFJ)
You're married and file one return together. This is almost always the best option for married couples because it offers the widest tax brackets and the highest standard deduction: $30,000 (2025). You also get full access to the Earned Income Credit, education credits, and child tax credits.
Head of Household (HOH)
You're unmarried, you paid more than half the cost of keeping up a home, and a qualifying person (usually a child or dependent parent) lived with you for more than half the year. Standard deduction: $22,500 (2025). Better brackets than Single.
How to Choose
| Your situation | Best status |
|---|---|
| Unmarried, no dependents | Single |
| Married | MFJ (almost always) |
| Unmarried with qualifying child at home | Head of Household |
| Spouse died in last 2 years, dependent child at home | Qualifying Surviving Spouse |
| Married but want separate liability | MFS (but you lose many credits) |
Warning
Married Filing Separately (MFS) disqualifies the Earned Income Credit, education credits, and the student loan interest deduction. It also halves the SALT cap to $5,000. Only use MFS when there's a specific reason.
Impact on Your Tax
The same income is taxed differently depending on status. For example, at $80,000 taxable income:
| Status | Approximate Tax | Effective Rate |
|---|---|---|
| Single | $13,458 | 16.8% |
| Head of Household | $11,577 | 14.5% |
| MFJ | $9,234 | 11.5% |
The difference between Single and MFJ at the same income is over $4,000 — entirely from the bracket structure.