If there is NOT an administrator for your business tax account in My DOR, you can request a letter be mailed to the address on file. The letter will include a Letter ID (code) that you use to gain access to the tax account. (Learn how to request a Letter ID)
If there is an administrator already set up for your business tax account in My DOR, contact that administrator and request that they grant you access.
Need help? Call 360-705-6705.
File a tax return - Do you have business activity to report?