PAC File Best Practices | Web Security Gateway (Anywhere) | Version 7.x. A Proxy Auto-Configuration (PAC) file is a JavaScript function definition that determines whether web browser requests (HTTP, HTTPS, and FTP) go direct to the destination or are forwarded to a web proxy server.
For partners and shareholders who opt out of the composite filing, the partnership or S corporation must remit the withholding on Indiana distributions into a nonresident withholding account.
Nevertheless, partnerships still file an annual tax return, Form 1065. A partnership can file an amended return using Form 1065X within three years of the date it filed the original return, or three years of the due date, whichever is later.