Interim Audit Guidelines are interpretive statements issued by the
Department of Revenue under authority of RCW 34.05.230. These guidelines
explain the Department's policy regarding how tax law applies to a specific issue or specific set of facts and are
intended to communicate timely guidance of tax issues important to the public and agency staff where no published
guidance exists. They are advisory for taxpayers; however, the Department is bound by these advisories until superseded
by Court action, Legislative action, rule adoption, or an amendment to or cancellation of the interim audit guidelines.
| IAG Number |
Title |
| 01.01 |
Deferred Sales Tax - Cancelled
effective June 5, 2002.
Please see ETA
2008. |
| 02.01 |
Refund of Retail Sales Tax Collected in Error - Cancelled effective June 30, 2005. |
| 03.01 |
Taxability of Credit Bureau Services - Cancelled effective June 30, 2005. |
04.01 |
Taxability of Investment Income -
Cancelled effective July 2, 2002.
Please see Chapter 150, Laws of 2002 HB 2641 |
05.03 |
Taxability of Reagents, Controls, and Calibrators - Cancelled effective June 30, 2005. |
Revenue Field Office Locations 
If you have a tax problem or question, contact us.