Sales tax requirements for an e-commerce business can be met by registering with the applicable state tax authorities. Depending on where your customers are located, you may need to register and collect sales taxes in multiple states. Once registered, businesses must calculate and charge the correct amount of sales tax on each transaction. Businesses should file accurate sales tax returns with the appropriate state agencies at regular intervals as defined by the individual state laws. Companies must remit collected taxes to their respective states in a timely manner to remain compliant with all applicable laws and regulations.