3. Oregon

Oregon taxpayers who submitted paper tax returns are facing some of the longest delays. The state has announced that it will not begin processing paper returns until late March, meaning refunds could take until April or later to arrive.

Because of this backlog, officials are strongly encouraging residents to file electronically, which significantly speeds up processing.

4. South Carolina

Refund delays in South Carolina stem mainly from form errors and manual corrections tied to changes in tax law. Some tax forms required adjustments to properly exclude certain federal provisions, forcing the state to manually review many returns.

Tax professionals recommend carefully reviewing your forms before filing to avoid additional delays.