You Can Easily File Your Return Online. Filing your return online is an easy and efficient method of filing your sales and use tax return.This guide aims to demystify the concept of sales tax in Los Angeles and provide a comprehensive understanding of the subject, from the basics to the nuances. A quick and complete guide for employees who earn sales commission payment in California and want to learn the law and your rights. Retail sales of tangible personal property in California are generally subject to sales tax. How to complete and file a California sales tax return. The final step to completing a sales tax return in California is to file and remit tax. A firm will devote considerable time and money to presenting a product to an individual County department in hopes of making a sale. Bulk Sales Law is designed to protect Buyers and Creditors. City Clerk Rulings Nos.