Oregon Board of Tax Practitioners Licensing Exams Step 1: Arrange with the Oregon Board of Tax Practitioners to take your tax practitioner exam at CCC. It is important to specify if you plan to take it at CCC’s Oregon City main campus or the Wilsonville campus. Each campus has different hours for testing. If you have not yet made arrangements with the Tax Board, you may contact them by phone at 503-378-4034 or by email at email@example.com. Step 2: Verify that your test is on file in our office by calling 503-594-3283. The tax board mails you a letter when they mail us your test. Because we have a central mailroom, it might take an extra day or two for us to receive your test. No appointment is necessary to take your exam. However we will not begin a tax board exam after 12:30 pm. If you are testing at the Oregon City campus Testing Center, the phone number is 503-594-3283. If you are testing at the Wilsonville campus Testing Center, the phone number is 503-594-0940.