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Washington Corporate Income Taxes (Subscribe)
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Washington state income tax on corporations, including state income and franchise tax nexus and doing business in Washington, allocation and apportionment, business and nonbusiness income, consolidated and combined returns, and other Washington corporate income tax information.
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http://dor.wa.gov/content/home/qa/doingBus_QA_AuditCollection.aspx
These articles provide information about taxes in Washington State. For information on more tax topics, check out the Special Notices, which provide clarification on tax issues, and Tax Facts, which highlights the latest tax issues.
http://search.mrsc.org/nxt/gateway.dll?f=templates&fn=legpage.htm$vid=rcwwac:leg
The Revised Code of Washington (RCW).
