A "Filing Deadline" refers to the specific date by which a document or application must be submitted to a relevant authority. This can apply to various contexts, such as tax returns, legal documents, or grant applications. Missing a filing deadline can result in penalties, rejection of the application, or other negative consequences. Different types of filings have different deadlines, which can vary by jurisdiction or organization. For example, the Internal Revenue Service (IRS) sets annual deadlines for tax returns, while courts have their own deadlines for legal filings. It is essential to be aware of these dates to ensure compliance and avoid complications.