Must complete Parts I and III of Form 8594 and attach the form to the income tax return for the year in which the increase or decrease is taken into account. This form provides the IRS with a detailed breakdown of how the purchase price is allocated across different asset categories.If you're buying or selling a business, the Internal Revenue Service requires you to complete Form 8594. Use this helpful guide to assist you along the way. Form 8594 requires detailed allocation of the purchase price among seven asset classes, each with its own tax implications. IRS Form 8594 breaks down the assets of the business being purchased or sold into seven classes or categories. The tax professional who comes into contact with such a situation should consider the need to file Form 8594, or to revise the valuation of specific assets. Generally, both the buyer and seller are required to file Form 8594, Asset Acquisition Statement, provided the sale meets the following two conditions:. IRS Form 8594 defines seven asset classes to which the entire purchase price must be allocated.