Online filing refers to the process of submitting documents or forms electronically through the internet. This method is commonly used for tasks such as tax returns, legal documents, and business registrations. It allows users to complete and send their paperwork quickly and efficiently, often with the added benefit of immediate confirmation of receipt. Many government agencies and organizations, such as the Internal Revenue Service (IRS) in the United States, offer online filing options to streamline processes and reduce paper usage. Users typically need to create an account, fill out the required forms, and securely submit their information, making it a convenient alternative to traditional mail.