Government Sites State of Washington   The official website for the State of Washington. Doing Business in Washington   Resources for doing business in the state of Washington. Washington Department of Revenue   The official website for the Washington State Department of Revenue. State of Oregon   The official website for the State of Oregon. Oregon Department of Revenue   The official website for the Oregon Department of Revenue. Internal Revenue Service   An online resource to find the latest in tax law U.S. Treasury Department   Get the latest government-issued press releases and other national budget/economy details Small Business Administration   Business resource available for small business research   Online Tax Payments Pay Federal Taxes   PAY1040.com allows you to pay your Federal income taxes electronically.