The tax power of attorney form, provided by the Department of Revenue, allows a person to handle your tax filing with the State of Washington. The person selected should be a qualified individual like a tax attorney or a certified public accountant (CPA) as any mistakes will be your liability.
To complete the form, fill in the blanks and sign. No witnesses or notary public needed. The document will usually be attached to your filing but if it must be registered for a future time it may be sent to the following departments;