When buying the assets of a business, some are subject to sales or use tax, while others are not. Items subject to retail sales tax.This page includes forms, fees, and instructions for all domestic business entities, foreign and domestic Registered Agents, and Washington Trademarks. Use a Business Bill of Sale to set out the terms for the sale of a business and transfer the ownership and all assets to the buyer. The process is comprised of four general steps: conversation, letter of intent, definitive documentation and closing. A business purchase agreement should detail the names of the buyer and seller at the start of the contract. Discover the essential steps to legally form your business in Washington State, from choosing a structure to completing registration. How to fill out the Consumer Use Tax Return Washington State Form? These businesses are inexpensive to form and there are no special reporting requirements. An LLC beginning business in Washington State must file formation documents with the Washington Secretary of State.