OR SB63

Creates a flat 4% personal income tax rate for taxpayers with adjusted gross income at or below $100,000 (joint returns) or $50,000 (all other return types)

Taxpayers above these income thresholds remain subject to Oregon's existing graduated tax brackets ranging from 4.75% to 9.9%

Applies to tax years beginning on or after January 1, 2026

Takes effect on the 91st day following adjournment of the 2025 regular legislative session