Phone: (503) 378-4988 or (800) 356-4222Asistencia disponible en español Fax: (503) 945-8738TTY: (800) 886-7204Email: questions.dor@oregon.govOpen 7:30 a.m. to 5 p.m. Monday-Friday. Phones lines are closed 9 to 11 a.m. Thursdays and on holidays.PAYMENT PLAN INFORMATIONPhone: (503) 945-8200Open 7:15 a.m. to 5 p.m. Monday-Friday, closed on holidays.