Whether your business sells handmade soaps or used office equipment, you should document transactions in writing. You need a bill of sale, a legal document that shows ownership was transferred from the seller to the buyer. It can also be used as an agreement for the sale of goods or as a sales receipt. Three things you need to know: The buyer should keep the original bill of sale; the seller should keep a copy. A bill of sale can protect the legal rights of both buyer and seller. It is valuable to have as a tax and accounting document. Download legal forms from the Web You can find almost every type of legal form on the Internet, forms that have been prepared by attorneys or approved by them. Most Web sites have a search-by-state feature. Preview forms and make changes Most Web sites allow users to look at forms – or sections – before buying. Some also have bilingual forms in both Spanish and English. Save time by filling out forms online While most Web sites offer both downloadable forms and snail mail versions for a few extra bucks, some allow you to fill out all your specific information online, preview it and then print. Make your paper forms work digitally Special software lets you convert paper forms into digital forms that you can complete and print on your computer. Comparison shop for forms Although most forms are similar – especially the general bill of sale forms – prices do vary, so be sure to check prices of the various Web sites selling legal forms. Do not give the bill of sale to the buyer until you have received full payment. When selling goods "as-is without any warranties," you are not guaranteeing the quality nor will you be held liable for any imperfections or flaws in the products you're selling. If equipment has a serial number, include it in the description in the bill of sale.