Oklahoma's state tax filing deadline is April 15, the same day as federal returns. Most states have the same deadline as the ...

Filing taxes in Oklahoma for 2025 is underway, with the IRS set to begin accepting federal tax returns on Jan. 27. Oklahomans have until Tuesday, April 15, 2025, to submit their state and federal tax ...

What forms you need, when to file, federal and state deadlines, and how to avoid penalties.