This document is an agreement for the sale and purchase of a business and assets as a going concern. Asset purchase agreements can be a useful way to create a new business while leaving unwanted resources and potential issues with the seller.Asset Purchase Agreements (APAs) are essential documents for asset sales, but they're far more complex than a simple transaction. 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. Download Washington Asset Purchase Agreement template, modify and send for signing using BoloForms Signature. Drafting Asset Purchase Agreements: Standard (and Not-So-Standard) Clauses.