What filing status should I use if I got married during 2025?

If you are married on or before December 31, 2025, the IRS considers you married for the entire year. You can choose to file as either Married Filing Jointly or Married Filing Separately, though Married Filing Jointly almost always gives you a bigger tax refund than Married Filing Separately.

If you were married after December 31, 2025, you would still file as Single or Head of Household on your 2025 tax return.