Filing information for: Personal taxes Find Free File options and a step-by-step overview of how to file. Businesses and self-employed Get your employer ID number (EIN), find Form 941, prepare to file, make estimated payments, access your business tax account and more. Charities and nonprofits Find Form 990 and apply for and maintain your organization’s tax-exempt status. International taxpayers Find tax filing requirements for international individuals and businesses. Statutes of limitations for assessing, collecting and refunding tax A statute of limitation is the time period established by law during when IRS can review, analyze, and resolve your tax-related issues. When the statutory period expires, we can no longer assess or collect additional tax, or allow you to claim a refund. Additional audiences Federal, state and local governments Resources for federal, state, local and government groups that have employees or contractors Indian tribal governments Tax information for Native American tribal governments and members Tax-exempt bonds Information about tax advantaged bonds, including tax exempt, tax credit and direct pay bonds Governmental liaisons If you’re with another federal agency or a state or local tax agency, partner with us to make things easier for you and for the taxpayer