To apply for an SSS salary loan, you must be an active member with at least 36 monthly contributions, and your loanable amount depends on your contribution history. The application can be done online through the SSS website or at your local SSS branch. It's important to check the specific requirements and terms, as they can change. For the most accurate information, visit the official SSS website or consult with a representative to ensure you meet all criteria and understand the process.