All employers with paid employees working in Oregon must register for a business identification number (BIN) to report and pay Oregon payroll taxes. Corporations without employees must also register to report compensation paid to corporate officers.
Oregon uses a Combined Payroll Tax Reporting System to report all payroll taxes together. The BIN serves as the employer's account number when reporting payroll taxes.
Before you hire
Oregon withholding taxes are due the same time as your federal taxes. Unemployment, transit taxes, and the Workers' Benefit Fund assessment payments are due the last day of the month following the end of the calendar quarter. Form OQ quarterly reports are due:
- 1st quarter, due April 30.
2nd quarter, due July 31.
3rd quarter, due October 31.
4th quarter, due January 31.
Filing and forms
Choose a quarterly report filing method:
Visit the Employment Department to order Oregon combined tax forms for reporting and payment of withholding taxe
s or contact us at (503) 945-8100.
Make a payment
If you pay your federal taxes electronically, you must also pay your Oregon combined payroll taxes electronically.
You can choose to pay Oregon tax electronically even if you don't meet the federal requirements. Visit our payments webpage for electronic options. Include a Form OTC when making payments by check or money order.
Year-end reconciliation information
You must file an Oregon Annual Withholding Reconciliation Report, Form WR, even if you submit your W-2 information electronically. Form WR is due January 31 in the year after the tax year. If you stop doing business during the year, the report is due within 30 days of your final payroll. You can file this form electronically through Revenue Online.
Update your business information
Change your business structure
Complete a Business Change in Status form, or a new Combined Employer's Registration form if you change your business structure, examples include:
- Changing from a sole proprietor to a partnership or corporation.
- Changing from a partnership to sole proprietor.
- Adding or removing a spouse as liable owner.
- Changing from any business structure type to a limited liability corporation (LLC).
Contact the Department of Consumer and Business Services if the structure change affects your workers' compensation insurance or Workers' Benefit Fund assessment.